diff --git a/PKHeX.Core/Legality/Localization/LegalityCheckLocalization.cs b/PKHeX.Core/Legality/Localization/LegalityCheckLocalization.cs
index 4e059ed95..aa6b6999b 100644
--- a/PKHeX.Core/Legality/Localization/LegalityCheckLocalization.cs
+++ b/PKHeX.Core/Legality/Localization/LegalityCheckLocalization.cs
@@ -75,8 +75,10 @@ public sealed class LegalityCheckLocalization
     public string ContestSheenGEQ_0 { get; set; } = "Contest Stat Sheen should be >= {0}.";
     public string ContestSheenLEQ_0 { get; set; } = "Contest Stat Sheen should be <= {0}.";
 
-    public string DateOutsideConsoleWindow { get; set; } = "Local Date is outside of console's local time window.";
-    public string DateTimeClockInvalid { get; set; } = "Local Time is not a valid timestamp.";
+    public string DateCalendarInvalidMet { get; set; } = "Met Date is not a valid calendar date.";
+    public string DateCalendarInvalidEgg { get; set; } = "Egg Met Date is not a valid calendar date.";
+    public string DateLocalInvalidDate { get; set; } = "Local Date is outside of console's local time window.";
+    public string DateLocalInvalidTime { get; set; } = "Local Time is not a valid timestamp.";
     public string DateOutsideDistributionWindow { get; set; } = "Met Date is outside of distribution window.";
 
     public string EggContest { get; set; } = "Cannot increase Contest Stats of an Egg.";
@@ -91,11 +93,9 @@ public sealed class LegalityCheckLocalization
     public string EggLocationTradeFail { get; set; } = "Invalid Egg Location, shouldn't be 'traded' while an Egg.";
     public string EggMetLocationFail { get; set; } = "Can't obtain Egg from Egg Location.";
     public string EggNature { get; set; } = "Eggs cannot have their Stat Nature changed.";
-    public string EggPokeathlon { get; set; } = "Eggs cannot have Pokéathlon stats.";
     public string EggPP { get; set; } = "Eggs cannot have modified move PP counts.";
     public string EggPPUp { get; set; } = "Cannot apply PP Ups to an Egg.";
     public string EggRelearnFlags { get; set; } = "Expected no Relearn Move Flags.";
-    public string EggShinyLeaf { get; set; } = "Eggs cannot have Shiny Leaf/Crown.";
     public string EggShinyPokeStar { get; set; } = "Eggs cannot be a Pokéstar Studios star.";
     public string EggSpecies { get; set; } = "Can't obtain Egg for this species.";
     public string EggUnhatched { get; set; } = "Valid un-hatched Egg.";
@@ -202,6 +202,10 @@ public sealed class LegalityCheckLocalization
     public string G3EReader { get; set; } = "Non Japanese Shadow E-reader Pokémon. Unreleased encounter.";
     public string G3OTGender { get; set; } = "OT from Colosseum/XD cannot be female.";
     public string G4InvalidTileR45Surf { get; set; } = "Johto Route 45 surfing encounter. Unreachable Water tiles.";
+    public string G4PartnerMoodEgg { get; set; } = "Eggs cannot have an Mood stat value.";
+    public string G4PartnerMoodZero { get; set; } = "Mood stat value should be zero when not in the player's party.";
+    public string G4ShinyLeafBitsInvalid { get; set; } = "Shiny Leaf/Crown bits are not valid.";
+    public string G4ShinyLeafBitsEgg { get; set; } = "Eggs cannot have Shiny Leaf/Crown.";
     public string G5IVAll30 { get; set; } = "All IVs of N's Pokémon should be 30.";
     public string G5PIDShinyGrotto { get; set; } = "Hidden Grotto captures cannot be shiny.";
     public string G5SparkleInvalid { get; set; } = "Special In-game N's Sparkle flag should not be checked.";
diff --git a/PKHeX.Core/Legality/Localization/LegalityCheckResultCodeExtensions.cs b/PKHeX.Core/Legality/Localization/LegalityCheckResultCodeExtensions.cs
index e1cf331f8..6d3b89960 100644
--- a/PKHeX.Core/Legality/Localization/LegalityCheckResultCodeExtensions.cs
+++ b/PKHeX.Core/Legality/Localization/LegalityCheckResultCodeExtensions.cs
@@ -59,8 +59,10 @@ public static class LegalityCheckResultCodeExtensions
         ContestSheenLEQ_0 => localization.ContestSheenLEQ_0,
 
         // Date & Timestamps
-        DateOutsideConsoleWindow => localization.DateOutsideConsoleWindow,
-        DateTimeClockInvalid => localization.DateTimeClockInvalid,
+        DateCalendarInvalidMet => localization.DateCalendarInvalidMet,
+        DateCalendarInvalidEgg => localization.DateCalendarInvalidEgg,
+        DateLocalInvalidDate => localization.DateLocalInvalidDate,
+        DateLocalInvalidTime => localization.DateLocalInvalidTime,
         DateOutsideDistributionWindow => localization.DateOutsideDistributionWindow,
 
         // Egg
@@ -76,11 +78,9 @@ public static class LegalityCheckResultCodeExtensions
         EggLocationTradeFail => localization.EggLocationTradeFail,
         EggMetLocationFail => localization.EggMetLocationFail,
         EggNature => localization.EggNature,
-        EggPokeathlon => localization.EggPokeathlon,
         EggPP => localization.EggPP,
         EggPPUp => localization.EggPPUp,
         EggRelearnFlags => localization.EggRelearnFlags,
-        EggShinyLeaf => localization.EggShinyLeaf,
         EggShinyPokeStar => localization.EggShinyPokeStar,
         EggSpecies => localization.EggSpecies,
         EggUnhatched => localization.EggUnhatched,
@@ -232,6 +232,10 @@ public static class LegalityCheckResultCodeExtensions
         G3EReader => localization.G3EReader,
         G3OTGender => localization.G3OTGender,
         G4InvalidTileR45Surf => localization.G4InvalidTileR45Surf,
+        G4PartnerMoodEgg => localization.G4PartnerMoodEgg,
+        G4PartnerMoodZero => localization.G4PartnerMoodZero,
+        G4ShinyLeafBitsEgg => localization.G4ShinyLeafBitsEgg,
+        G4ShinyLeafBitsInvalid => localization.G4ShinyLeafBitsInvalid,
         G5IVAll30 => localization.G5IVAll30,
         G5PIDShinyGrotto => localization.G5PIDShinyGrotto,
         G5SparkleInvalid => localization.G5SparkleInvalid,
diff --git a/PKHeX.Core/Legality/Structures/LegalityCheckResultCode.cs b/PKHeX.Core/Legality/Structures/LegalityCheckResultCode.cs
index b5aea1fd9..dfb3e1cf5 100644
--- a/PKHeX.Core/Legality/Structures/LegalityCheckResultCode.cs
+++ b/PKHeX.Core/Legality/Structures/LegalityCheckResultCode.cs
@@ -51,8 +51,10 @@ public enum LegalityCheckResultCode : ushort
     ContestZeroSheen,
 
     // Date & Timestamps
-    DateOutsideConsoleWindow,
-    DateTimeClockInvalid,
+    DateCalendarInvalidMet,
+    DateCalendarInvalidEgg,
+    DateLocalInvalidDate,
+    DateLocalInvalidTime,
     DateOutsideDistributionWindow,
 
     // Egg
@@ -67,11 +69,9 @@ public enum LegalityCheckResultCode : ushort
     EggLocationTradeFail,
     EggMetLocationFail,
     EggNature,
-    EggPokeathlon,
     EggPP,
     EggPPUp,
     EggRelearnFlags,
-    EggShinyLeaf,
     EggShinyPokeStar,
     EggSpecies,
     EggUnhatched,
@@ -180,6 +180,10 @@ public enum LegalityCheckResultCode : ushort
     G3EReader,
     G3OTGender,
     G4InvalidTileR45Surf,
+    G4PartnerMoodEgg,
+    G4PartnerMoodZero,
+    G4ShinyLeafBitsEgg,
+    G4ShinyLeafBitsInvalid,
     G5IVAll30,
     G5PIDShinyGrotto,
     G5SparkleInvalid,
diff --git a/PKHeX.Core/Legality/Verifiers/MiscVerifier.cs b/PKHeX.Core/Legality/Verifiers/MiscVerifier.cs
index 219cba77f..2c625b254 100644
--- a/PKHeX.Core/Legality/Verifiers/MiscVerifier.cs
+++ b/PKHeX.Core/Legality/Verifiers/MiscVerifier.cs
@@ -40,14 +40,6 @@ public override void Verify(LegalityAnalysis data)
                 case PK3 when pk.Language != 1:
                     data.AddLine(GetInvalid(Egg, OTLanguageShouldBe_0, (byte)LanguageID.Japanese));
                     break;
-
-                // Cannot obtain Shiny Leaf or Pokeathlon Stats as Egg
-                case PK4 pk4:
-                    if (pk4.ShinyLeaf != 0)
-                        data.AddLine(GetInvalid(Egg, EggShinyLeaf));
-                    if (pk4.PokeathlonStat != 0)
-                        data.AddLine(GetInvalid(Egg, EggPokeathlon));
-                    break;
             }
 
             if (pk is IHomeTrack { HasTracker: true })
@@ -57,6 +49,7 @@ public override void Verify(LegalityAnalysis data)
         switch (pk)
         {
             case SK2 sk2: VerifyIsMovesetAllowed(data, sk2); break;
+            case G4PKM pk4: VerifyMisc4(data, pk4); break;
             case PK5 pk5: VerifyStats5(data, pk5); break;
             case PK7 pk7: VerifyStats7(data, pk7); break;
             case PB7 pb7: VerifyStats7b(data, pb7); break;
@@ -93,6 +86,61 @@ public override void Verify(LegalityAnalysis data)
         VerifyMiscFatefulEncounter(data);
         VerifyMiscPokerus(data);
         VerifyMiscScaleValues(data, pk, enc);
+        VerifyDateValues(data, pk);
+    }
+
+    private void VerifyMisc4(LegalityAnalysis data, G4PKM pk)
+    {
+        // Mood:
+        // Range is [-127, 127]. Deduplicated unique adjustments are +8, +10, and -20.
+        // Increment adjustments of -2 (-20 +8 +10) and +2 (+8*4 +10 -20) are possible.
+        // Start from 0 or from clamped edge, with above adjustments, at least one mutation path can arrive at a given [-127, 127] value.
+        // There are probably other scripted increments, but the above is just to prove that all values are possible via specific actions.
+        // Eggs cannot have a value other than 0.
+        // HG/SS resets when promoting to lead of party, or removing from party. Therefore, any party slot can retain a non-zero value.
+        // Mood also resets for the lead Pokémon when booting the game, but it can be mutated immediately after (and saved/dumped).
+        // Note: Trading to D/P/Pt does not clear (thus unchanged on side games too), so this check is only relevant for HG/SS slots.
+        if (pk.PartnerMood != 0)
+        {
+            if (pk.IsEgg)
+                data.AddLine(GetInvalid(Egg, G4PartnerMoodEgg));
+            else if (data.SlotOrigin is not StorageSlotType.Party && ParseSettings.ActiveTrainer is SAV4HGSS)
+                data.AddLine(GetInvalid(Egg, G4PartnerMoodZero));
+        }
+
+        // Shiny leaf: cannot have crown (bit 5) without bits 0-4. Bits higher are invalid.
+        // Eggs cannot receive a Shiny Leaf.
+        var leaf = pk.ShinyLeaf;
+        if (leaf is > 0b_11111 and not 0b_1_11111 || (leaf is not 0 && pk.IsEgg))
+            data.AddLine(GetInvalid(G4ShinyLeafBitsInvalid));
+    }
+
+    private static void VerifyDateValues(LegalityAnalysis data, PKM pk)
+    {
+        if (pk.Format <= 3)
+            return; // Gen1-3 do not have date values.
+
+        var expect0 = pk is PB8 ? Locations.Default8bNone : 0;
+        if (pk.MetLocation != expect0)
+        {
+            if (pk.MetDate is null)
+                data.AddLine(GetInvalid(Memory, DateCalendarInvalidMet));
+        }
+        else
+        {
+            if (pk.MetMonth != 0 || pk.MetDay != 0 || pk.MetYear != 0)
+                data.AddLine(GetInvalid(Memory, DateCalendarInvalidMet));
+        }
+        if (pk.EggLocation != expect0)
+        {
+            if (pk.EggMetDate is null)
+                data.AddLine(GetInvalid(Memory, DateCalendarInvalidEgg));
+        }
+        else
+        {
+            if (pk.EggMonth != 0 || pk.EggDay != 0 || pk.EggYear != 0)
+                data.AddLine(GetInvalid(Memory, DateCalendarInvalidEgg));
+        }
     }
 
     private void VerifyCorrelation8b(LegalityAnalysis data, IStaticCorrelation8b s8b, PKM pk)
@@ -680,12 +728,12 @@ private static void VerifyStats7b(LegalityAnalysis data, PB7 pb7)
             data.AddLine(GetInvalid(Encounter, StatIncorrectCP_0, (uint)calc));
 
         if (pb7.ReceivedTime is null)
-            data.AddLine(GetInvalid(Misc, DateTimeClockInvalid));
+            data.AddLine(GetInvalid(Misc, DateLocalInvalidTime));
 
         // HOME moving in and out will retain received date. ensure it matches if no HT data present.
         // Go Park captures will have different dates, as the GO met date is retained as Met Date.
         if (pb7.ReceivedDate is not { } date || !EncounterDate.IsValidDateSwitch(date) || (pb7.IsUntraded && data.EncounterOriginal is not EncounterSlot7GO && date != pb7.MetDate))
-            data.AddLine(GetInvalid(Misc, DateOutsideConsoleWindow));
+            data.AddLine(GetInvalid(Misc, DateLocalInvalidDate));
     }
 
     private static void VerifyAbsoluteSizes<T>(LegalityAnalysis data, T obj) where T : IScaledSizeValue
diff --git a/PKHeX.Core/PKM/BK4.cs b/PKHeX.Core/PKM/BK4.cs
index 8a2f83c2f..dcee33421 100644
--- a/PKHeX.Core/PKM/BK4.cs
+++ b/PKHeX.Core/PKM/BK4.cs
@@ -281,7 +281,7 @@ public override ushort MetLocationDP
     public override byte OriginalTrainerGender { get => (byte)(Data[0x84] & 1); set => Data[0x84] = (byte)((Data[0x84] & ~0x1) | (value & 1)); }
     public override GroundTileType GroundTile { get => (GroundTileType)Data[0x85]; set => Data[0x85] = (byte)value; }
     public override byte BallHGSS { get => Data[0x86]; set => Data[0x86] = value; }
-    public override byte PokeathlonStat { get => Data[0x87]; set => Data[0x87] = value; }
+    public override sbyte PartnerMood { get => (sbyte)Data[0x87]; set => Data[0x87] = (byte)value; }
     #endregion
 
     // Not stored
diff --git a/PKHeX.Core/PKM/PK4.cs b/PKHeX.Core/PKM/PK4.cs
index 9147eb169..b8495c0ba 100644
--- a/PKHeX.Core/PKM/PK4.cs
+++ b/PKHeX.Core/PKM/PK4.cs
@@ -269,7 +269,7 @@ public override ushort MetLocationDP
     public override byte OriginalTrainerGender { get => (byte)(Data[0x84] >> 7); set => Data[0x84] = (byte)((Data[0x84] & ~0x80) | (value << 7)); }
     public override GroundTileType GroundTile { get => (GroundTileType)Data[0x85]; set => Data[0x85] = (byte)value; }
     public override byte BallHGSS { get => Data[0x86]; set => Data[0x86] = value; }
-    public override byte PokeathlonStat { get => Data[0x87]; set => Data[0x87] = value; }
+    public override sbyte PartnerMood { get => (sbyte)Data[0x87]; set => Data[0x87] = (byte)value; }
     #endregion
 
     #region Battle Stats
diff --git a/PKHeX.Core/PKM/RK4.cs b/PKHeX.Core/PKM/RK4.cs
index b8591c345..8df55ad4a 100644
--- a/PKHeX.Core/PKM/RK4.cs
+++ b/PKHeX.Core/PKM/RK4.cs
@@ -268,7 +268,7 @@ public override ushort MetLocationDP
     public override byte OriginalTrainerGender { get => (byte)(Data[0x84] >> 7); set => Data[0x84] = (byte)((Data[0x84] & ~0x80) | (value << 7)); }
     public override GroundTileType GroundTile { get => (GroundTileType)Data[0x85]; set => Data[0x85] = (byte)value; }
     public override byte BallHGSS { get => Data[0x86]; set => Data[0x86] = value; }
-    public override byte PokeathlonStat { get => Data[0x87]; set => Data[0x87] = value; }
+    public override sbyte PartnerMood { get => (sbyte)Data[0x87]; set => Data[0x87] = (byte)value; }
     #endregion
 
     #region Battle Stats
diff --git a/PKHeX.Core/PKM/Shared/G4PKM.cs b/PKHeX.Core/PKM/Shared/G4PKM.cs
index 959f0fd55..ee25240cf 100644
--- a/PKHeX.Core/PKM/Shared/G4PKM.cs
+++ b/PKHeX.Core/PKM/Shared/G4PKM.cs
@@ -166,7 +166,7 @@ public abstract class G4PKM : PKM, IHandlerUpdate,
     public abstract GroundTileType GroundTile { get; set; }
     public abstract byte BallDPPt { get; set; }
     public abstract byte BallHGSS { get; set; }
-    public abstract byte PokeathlonStat { get; set; }
+    public abstract sbyte PartnerMood { get; set; } // HG/SS overworld interactions, Pokéathlon?
     public int MarkingCount => 6;
     public abstract byte MarkingValue { get; set; }
 
@@ -376,7 +376,7 @@ protected T ConvertTo<T>() where T : G4PKM, new()
             BallDPPt = BallDPPt,
             BallHGSS = BallHGSS,
             GroundTile = GroundTile,
-            PokeathlonStat = PokeathlonStat,
+            PartnerMood = PartnerMood,
             FatefulEncounter = FatefulEncounter,
 
             MetLevel = MetLevel,
diff --git a/PKHeX.Core/Resources/localize/legality/legality_de.json b/PKHeX.Core/Resources/localize/legality/legality_de.json
index 801bd66b0..8ba5fcfd0 100644
--- a/PKHeX.Core/Resources/localize/legality/legality_de.json
+++ b/PKHeX.Core/Resources/localize/legality/legality_de.json
@@ -35,8 +35,10 @@
     "ContestZeroSheen": "Contest Stat Sheen should be 0.",
     "ContestSheenGEQ_0": "Contest Stat Sheen should be >= {0}.",
     "ContestSheenLEQ_0": "Contest Stat Sheen should be <= {0}.",
-    "DateOutsideConsoleWindow": "Local Date is outside of console's local time window.",
-    "DateTimeClockInvalid": "Local Time is not a valid timestamp.",
+    "DateCalendarInvalidMet": "Met Date is not a valid calendar date.",
+    "DateCalendarInvalidEgg": "Egg Met Date is not a valid calendar date.",
+    "DateLocalInvalidDate": "Local Date is outside of console's local time window.",
+    "DateLocalInvalidTime": "Local Time is not a valid timestamp.",
     "DateOutsideDistributionWindow": "Met Date is outside of distribution window.",
     "EggContest": "Cannot increase Contest Stats of an Egg.",
     "EggEXP": "Eggs cannot receive experience.",
@@ -50,11 +52,9 @@
     "EggLocationTradeFail": "Invalid Egg Location, shouldn't be 'traded' while an Egg.",
     "EggMetLocationFail": "Can't obtain Egg from Egg Location.",
     "EggNature": "Eggs cannot have their Stat Nature changed.",
-    "EggPokeathlon": "Eggs cannot have Pokéathlon stats.",
     "EggPP": "Eggs cannot have modified PP counts.",
     "EggPPUp": "Cannot apply PP Ups to an Egg.",
     "EggRelearnFlags": "Expected no Relearn Move Flags.",
-    "EggShinyLeaf": "Eggs cannot have Shiny Leaf/Crown.",
     "EggShinyPokeStar": "Eggs cannot be a Pokéstar Studios star.",
     "EggSpecies": "Can't obtain Egg for this species.",
     "EggUnhatched": "Valid un-hatched Egg.",
@@ -148,6 +148,10 @@
     "G3EReader": "Non Japanese Shadow E-reader Pokémon. Unreleased encounter.",
     "G3OTGender": "OT from Colosseum/XD cannot be female.",
     "G4InvalidTileR45Surf": "Johto Route 45 surfing encounter. Unreachable Water tiles.",
+    "G4PartnerMoodEgg": "Eggs cannot have an Mood stat value.",
+    "G4PartnerMoodZero": "Mood stat value should be zero when not in the player's party.",
+    "G4ShinyLeafBitsInvalid": "Shiny Leaf/Crown bits are not valid.",
+    "G4ShinyLeafBitsEgg": "Eggs cannot have Shiny Leaf/Crown.",
     "G5IVAll30": "All IVs of N's Pokémon should be 30.",
     "G5PIDShinyGrotto": "Hidden Grotto captures cannot be shiny.",
     "G5SparkleInvalid": "Special in-game N's Sparkle flag should not be checked.",
diff --git a/PKHeX.Core/Resources/localize/legality/legality_en.json b/PKHeX.Core/Resources/localize/legality/legality_en.json
index 5d6e293cf..2a325c5b2 100644
--- a/PKHeX.Core/Resources/localize/legality/legality_en.json
+++ b/PKHeX.Core/Resources/localize/legality/legality_en.json
@@ -35,8 +35,10 @@
     "ContestZeroSheen": "Contest Stat Sheen should be 0.",
     "ContestSheenGEQ_0": "Contest Stat Sheen should be >= {0}.",
     "ContestSheenLEQ_0": "Contest Stat Sheen should be <= {0}.",
-    "DateOutsideConsoleWindow": "Local Date is outside of console's local time window.",
-    "DateTimeClockInvalid": "Local Time is not a valid timestamp.",
+    "DateCalendarInvalidMet": "Met Date is not a valid calendar date.",
+    "DateCalendarInvalidEgg": "Egg Met Date is not a valid calendar date.",
+    "DateLocalInvalidDate": "Local Date is outside of console's local time window.",
+    "DateLocalInvalidTime": "Local Time is not a valid timestamp.",
     "DateOutsideDistributionWindow": "Met Date is outside of distribution window.",
     "EggContest": "Cannot increase Contest Stats of an Egg.",
     "EggEXP": "Eggs cannot receive experience.",
@@ -50,11 +52,9 @@
     "EggLocationTradeFail": "Invalid Egg Location, shouldn't be 'traded' while an Egg.",
     "EggMetLocationFail": "Can't obtain Egg from Egg Location.",
     "EggNature": "Eggs cannot have their Stat Nature changed.",
-    "EggPokeathlon": "Eggs cannot have Pokéathlon stats.",
     "EggPP": "Eggs cannot have modified move PP counts.",
     "EggPPUp": "Cannot apply PP Ups to an Egg.",
     "EggRelearnFlags": "Expected no Relearn Move Flags.",
-    "EggShinyLeaf": "Eggs cannot have Shiny Leaf/Crown.",
     "EggShinyPokeStar": "Eggs cannot be a Pokéstar Studios star.",
     "EggSpecies": "Can't obtain Egg for this species.",
     "EggUnhatched": "Valid un-hatched Egg.",
@@ -148,6 +148,10 @@
     "G3EReader": "Non Japanese Shadow E-reader Pokémon. Unreleased encounter.",
     "G3OTGender": "OT from Colosseum/XD cannot be female.",
     "G4InvalidTileR45Surf": "Johto Route 45 surfing encounter. Unreachable Water tiles.",
+    "G4PartnerMoodEgg": "Eggs cannot have an Mood stat value.",
+    "G4PartnerMoodZero": "Mood stat value should be zero when not in the player's party.",
+    "G4ShinyLeafBitsInvalid": "Shiny Leaf/Crown bits are not valid.",
+    "G4ShinyLeafBitsEgg": "Eggs cannot have Shiny Leaf/Crown.",
     "G5IVAll30": "All IVs of N's Pokémon should be 30.",
     "G5PIDShinyGrotto": "Hidden Grotto captures cannot be shiny.",
     "G5SparkleInvalid": "Special in-game N's Sparkle flag should not be checked.",
diff --git a/PKHeX.Core/Resources/localize/legality/legality_es.json b/PKHeX.Core/Resources/localize/legality/legality_es.json
index f6805560b..021bdfe5e 100644
--- a/PKHeX.Core/Resources/localize/legality/legality_es.json
+++ b/PKHeX.Core/Resources/localize/legality/legality_es.json
@@ -35,8 +35,10 @@
     "ContestZeroSheen": " La estadística de concurso Brillo debería ser 0.",
     "ContestSheenGEQ_0": "La estadística de concurso Brillo debería ser >= {0}.",
     "ContestSheenLEQ_0": "La estadística de concurso Brillo debería ser <= {0}.",
-    "DateOutsideConsoleWindow": "Local Date is outside of console's local time window.",
-    "DateTimeClockInvalid": "Local Time is not a valid timestamp.",
+    "DateCalendarInvalidMet": "Met Date is not a valid calendar date.",
+    "DateCalendarInvalidEgg": "Egg Met Date is not a valid calendar date.",
+    "DateLocalInvalidDate": "Local Date is outside of console's local time window.",
+    "DateLocalInvalidTime": "Local Time is not a valid timestamp.",
     "DateOutsideDistributionWindow": "La fecha de encuentro está fuera del rango de fechas de distribución.",
     "EggContest": "No se pueden aumentar las estadísticas de Concurso de un Huevo.",
     "EggEXP": "Los Huevos no pueden recibir experiencia.",
@@ -50,11 +52,9 @@
     "EggLocationTradeFail": "Localización del Huevo inválida, no debería haber sido intercambiado mientras era un Huevo.",
     "EggMetLocationFail": "No se puede obtener el Huevo en la localización.",
     "EggNature": "Los Huevos no pueden tener Naturaleza estadística.",
-    "EggPokeathlon": "Los Huevos no pueden tener estadísticas del Pokéathlon.",
     "EggPP": "Los Huevos no pueden tener los contadores de PP modificados.",
     "EggPPUp": "No se puede aplicar Más PP a un huevo.",
     "EggRelearnFlags": "Los Huevos no pueden tener Discos Técnicos marcados. ",
-    "EggShinyLeaf": "Los Huevos no pueden tener Hoja/Corona dorada.",
     "EggShinyPokeStar": "Los Huevos no pueden ser una estrella de los Estudios Cinematográficos Pokéwoods.",
     "EggSpecies": "Esta especie no puede tener Huevos.",
     "EggUnhatched": "Huevo eclosionado inválido.",
@@ -148,6 +148,10 @@
     "G3EReader": "Pokémon oscuro de E-Reader japonés. Encuentro no liberado.",
     "G3OTGender": "EO de Colosseum/XD no puede ser femenino.",
     "G4InvalidTileR45Surf": "Encuentro mediante Surf en la ruta 45 de Johto. Zonas de agua inalcanzables.",
+    "G4PartnerMoodEgg": "Eggs cannot have an Mood stat value.",
+    "G4PartnerMoodZero": "Mood stat value should be zero when not in the player's party.",
+    "G4ShinyLeafBitsInvalid": "Shiny Leaf/Crown bits are not valid.",
+    "G4ShinyLeafBitsEgg": "Los Huevos no pueden tener Hoja/Corona dorada.",
     "G5IVAll30": "Todos los IVs de los Pokémon de N deberían ser 30.",
     "G5PIDShinyGrotto": "Las Capturas en Los Claros Ocultos no pueden ser variocolor.",
     "G5SparkleInvalid": "La marca chispeante especial de los Pokémon de N en el juego no debería marcarse.",
diff --git a/PKHeX.Core/Resources/localize/legality/legality_fr.json b/PKHeX.Core/Resources/localize/legality/legality_fr.json
index a176219a1..8db28d197 100644
--- a/PKHeX.Core/Resources/localize/legality/legality_fr.json
+++ b/PKHeX.Core/Resources/localize/legality/legality_fr.json
@@ -35,8 +35,10 @@
     "ContestZeroSheen": "Contest Stat Sheen should be 0.",
     "ContestSheenGEQ_0": "Contest Stat Sheen should be >= {0}.",
     "ContestSheenLEQ_0": "Contest Stat Sheen should be <= {0}.",
-    "DateOutsideConsoleWindow": "Local Date is outside of console's local time window.",
-    "DateTimeClockInvalid": "Local Time is not a valid timestamp.",
+    "DateCalendarInvalidMet": "Met Date is not a valid calendar date.",
+    "DateCalendarInvalidEgg": "Egg Met Date is not a valid calendar date.",
+    "DateLocalInvalidDate": "Local Date is outside of console's local time window.",
+    "DateLocalInvalidTime": "Local Time is not a valid timestamp.",
     "DateOutsideDistributionWindow": "La date de rencontre est en dehors de la fenêtre de distribution.",
     "EggContest": "Impossible d'augmenter les Stats de Concours à un Œuf.",
     "EggEXP": "Les œufs ne peuvent pas recevoir d'expérience.",
@@ -50,11 +52,9 @@
     "EggLocationTradeFail": "Lieu d'obtention d'Œuf invalide, impossible de faire un échange sous cette forme.",
     "EggMetLocationFail": "L'œuf ne peut pas être obtenu au lieu de rencontre.",
     "EggNature": "Les œufs ne peuvent pas avoir de nature statistique.",
-    "EggPokeathlon": "Les Œufs ne peuvent pas avoir de statistiques Pokéathlon.",
     "EggPP": "Impossible de modifier les PP d'un Œuf.",
     "EggPPUp": "Impossible d'appliquer des PP Plus à un Œuf.",
     "EggRelearnFlags": "Les œufs ne peuvent pas avoir de disques techniques marqués.",
-    "EggShinyLeaf": "Les Œufs ne peuvent pas avoir de feuille / couronne d'or.",
     "EggShinyPokeStar": "Les œufs ne peuvent pas être une star de Pokéwood.",
     "EggSpecies": "Cette espèce ne peut pas se reproduire.",
     "EggUnhatched": "Œuf non-éclos valide.",
@@ -148,6 +148,10 @@
     "G3EReader": "Pokémon Shadow E-reader non japonais. Rencontre non officialisé.",
     "G3OTGender": "Le DO de Pokémon Colosseum / XD ne peut pas être une fille.",
     "G4InvalidTileR45Surf": "Rencontre à la Route 45 de Johto en Surfant. Cases d'eau inatteignables.",
+    "G4PartnerMoodEgg": "Eggs cannot have an Mood stat value.",
+    "G4PartnerMoodZero": "Mood stat value should be zero when not in the player's party.",
+    "G4ShinyLeafBitsInvalid": "Shiny Leaf/Crown bits are not valid.",
+    "G4ShinyLeafBitsEgg": "Les Œufs ne peuvent pas avoir de feuille / couronne d'or.",
     "G5IVAll30": "Tous les IVs des Pokémon de N doivent être 30.",
     "G5PIDShinyGrotto": "Les Pokémon capturés dans les Trouées cachées ne peuvent pas être chromatiques.",
     "G5SparkleInvalid": "Le flag de l'éclat spécial des Pokémon de N ne doit pas être coché.",
diff --git a/PKHeX.Core/Resources/localize/legality/legality_it.json b/PKHeX.Core/Resources/localize/legality/legality_it.json
index c75868fdd..2b61f783b 100644
--- a/PKHeX.Core/Resources/localize/legality/legality_it.json
+++ b/PKHeX.Core/Resources/localize/legality/legality_it.json
@@ -35,8 +35,10 @@
     "ContestZeroSheen": "Il Lustro dovrebbe essere 0.",
     "ContestSheenGEQ_0": "Il Lustro dovrebbe essere >= {0}.",
     "ContestSheenLEQ_0": "Il Lustro dovrebbe essere <= {0}.",
-    "DateOutsideConsoleWindow": "Local Date is outside of console's local time window.",
-    "DateTimeClockInvalid": "Local Time is not a valid timestamp.",
+    "DateCalendarInvalidMet": "Met Date is not a valid calendar date.",
+    "DateCalendarInvalidEgg": "Egg Met Date is not a valid calendar date.",
+    "DateLocalInvalidDate": "Local Date is outside of console's local time window.",
+    "DateLocalInvalidTime": "Local Time is not a valid timestamp.",
     "DateOutsideDistributionWindow": "La data di incontro è al di fuori del periodo di Distribuzione.",
     "EggContest": "Le statistiche delle gare non possono crescere per un Uovo.",
     "EggEXP": "Le Uova non possono ricevere esperienza.",
@@ -50,11 +52,9 @@
     "EggLocationTradeFail": "Il luogo di incontro non dovrebbe essere 'Scambio', se è un Uovo.",
     "EggMetLocationFail": "Impossibile ottenre l'Uovo nel Luogo dell'Uovo.",
     "EggNature": "Le Uova non possono avere la Natura delle Statistiche cambiata.",
-    "EggPokeathlon": "Le Uova non possono avere statistiche Pokéathlon.",
     "EggPP": "Le Uova non possono avere modifiche ai PP.",
     "EggPPUp": "Non si possono applicare PP Up alle Uova.",
     "EggRelearnFlags": "Non sono previsti segnali di Mosse Ricordabili.",
-    "EggShinyLeaf": "Le Uova non possono avere Foglielucenti o la Corona di Foglie.",
     "EggShinyPokeStar": "Le Uova non possono essere Star del Pokéwood.",
     "EggSpecies": "Impossibile ottenere Uova di questa specie.",
     "EggUnhatched": "Uovo non schiuso valido.",
@@ -148,6 +148,10 @@
     "G3EReader": "Incontro Ombra E-Reader non Giapponese. Evento non rilasciato.",
     "G3OTGender": "AO di Colosseum/XD non possono essere femmina.",
     "G4InvalidTileR45Surf": "Incontro da surf nel Percorso 45 di Johto, la casella d'acqua è irraggiungibile.",
+    "G4PartnerMoodEgg": "Eggs cannot have an Mood stat value.",
+    "G4PartnerMoodZero": "Mood stat value should be zero when not in the player's party.",
+    "G4ShinyLeafBitsInvalid": "Shiny Leaf/Crown bits are not valid.",
+    "G4ShinyLeafBitsEgg": "Le Uova non possono avere Foglielucenti o la Corona di Foglie.",
     "G5IVAll30": "Tutti gli IV dei Pokémon di N dovrebbero essere 30.",
     "G5PIDShinyGrotto": "Gli incontri del Meandro Nascosto non possono essere Shiny.",
     "G5SparkleInvalid": "Il segnale speciale di luccichio dei Pokémon di N non dovrebbe essere ablitato.",
diff --git a/PKHeX.Core/Resources/localize/legality/legality_ja.json b/PKHeX.Core/Resources/localize/legality/legality_ja.json
index e6cbfdad3..ff21cc3b2 100644
--- a/PKHeX.Core/Resources/localize/legality/legality_ja.json
+++ b/PKHeX.Core/Resources/localize/legality/legality_ja.json
@@ -35,8 +35,10 @@
     "ContestZeroSheen": "けづやは0でなければなりません。",
     "ContestSheenGEQ_0": "けづやは >= {0} でなければなりません。",
     "ContestSheenLEQ_0": "けづやは <= {0} でなければなりません。",
-    "DateOutsideConsoleWindow": "Local Date is outside of console's local time window.",
-    "DateTimeClockInvalid": "Local Time is not a valid timestamp.",
+    "DateCalendarInvalidMet": "Met Date is not a valid calendar date.",
+    "DateCalendarInvalidEgg": "Egg Met Date is not a valid calendar date.",
+    "DateLocalInvalidDate": "Local Date is outside of console's local time window.",
+    "DateLocalInvalidTime": "Local Time is not a valid timestamp.",
     "DateOutsideDistributionWindow": "出会った日が配布期間外です。",
     "EggContest": "タマゴはコンディションを上げることはできません。",
     "EggEXP": "タマゴは経験値を得ることはできません。",
@@ -50,11 +52,9 @@
     "EggLocationTradeFail": "もらった場所が無効です。タマゴの状態で交換してはいけません。",
     "EggMetLocationFail": "そのもらった場所では、タマゴを入手できません。",
     "EggNature": "タマゴはミントで性格変更できません。",
-    "EggPokeathlon": "タマゴはポケスロンのステータスを変更できません。",
     "EggPP": "タマゴは技のPPを変更することはできません。",
     "EggPPUp": "タマゴにポイントアップは使用できません",
     "EggRelearnFlags": "技を思い出すフラグがないと思われます。",
-    "EggShinyLeaf": "タマゴに『かがやくはっぱ/冠』を設定することはできません。",
     "EggShinyPokeStar": "タマゴにポケウッドのスターを付与することはできません。",
     "EggSpecies": "このポケモンのタマゴは入手できません。",
     "EggUnhatched": "孵化していない正規のタマゴ。",
@@ -148,6 +148,10 @@
     "G3EReader": "日本以外でカードeリーダーを使ったダークポケモン。未実装のエンカウント。",
     "G3OTGender": "「ポケモンコロシアム」「ポケモンＸＤ」では女性トレーナーは選択できません",
     "G4InvalidTileR45Surf": "４５ばんどうろ（４世代）の水上エンカウント。正規では到達不可能です。",
+    "G4PartnerMoodEgg": "Eggs cannot have an Mood stat value.",
+    "G4PartnerMoodZero": "Mood stat value should be zero when not in the player's party.",
+    "G4ShinyLeafBitsInvalid": "Shiny Leaf/Crown bits are not valid.",
+    "G4ShinyLeafBitsEgg": "タマゴに『かがやくはっぱ/冠』を設定することはできません。",
     "G5IVAll30": "Nのポケモンは個体値が全て30です。",
     "G5PIDShinyGrotto": "隠し穴産のポケモンは色違いになりません。",
     "G5SparkleInvalid": "Nのポケモンフラグのチェックを外してください。",
diff --git a/PKHeX.Core/Resources/localize/legality/legality_ko.json b/PKHeX.Core/Resources/localize/legality/legality_ko.json
index 8a7e6c1be..d9b2f8288 100644
--- a/PKHeX.Core/Resources/localize/legality/legality_ko.json
+++ b/PKHeX.Core/Resources/localize/legality/legality_ko.json
@@ -35,8 +35,10 @@
     "ContestZeroSheen": "Contest Stat Sheen should be 0.",
     "ContestSheenGEQ_0": "Contest Stat Sheen should be >= {0}.",
     "ContestSheenLEQ_0": "Contest Stat Sheen should be <= {0}.",
-    "DateOutsideConsoleWindow": "Local Date is outside of console's local time window.",
-    "DateTimeClockInvalid": "Local Time is not a valid timestamp.",
+    "DateCalendarInvalidMet": "Met Date is not a valid calendar date.",
+    "DateCalendarInvalidEgg": "Egg Met Date is not a valid calendar date.",
+    "DateLocalInvalidDate": "Local Date is outside of console's local time window.",
+    "DateLocalInvalidTime": "Local Time is not a valid timestamp.",
     "DateOutsideDistributionWindow": "Met Date is outside of distribution window.",
     "EggContest": "알은 컨디션을 올릴 수 없습니다.",
     "EggEXP": "알은 경험치를 얻을 수 없습니다.",
@@ -50,11 +52,9 @@
     "EggLocationTradeFail": "알을 만난 장소가 잘못되었습니다. 부화 전 알을 교환할 수 없습니다.",
     "EggMetLocationFail": "알을 만난 장소에서 알을 얻을 수 없습니다.",
     "EggNature": "알은 성격과 능력치 성격이 서로 다를 수 없습니다.",
-    "EggPokeathlon": "알은 포켓슬론 능력치를 가질 수 없습니다.",
     "EggPP": "알은 PP를 수정할 수 없습니다.",
     "EggPPUp": "알에는 PP업을 적용할 수 없습니다.",
     "EggRelearnFlags": "떠올리기 기술 플래그가 없어야 합니다.",
-    "EggShinyLeaf": "알은 빛나는나뭇잎/왕관을 가질 수 없습니다.",
     "EggShinyPokeStar": "알은 포켓우드 스타가 될 수 없습니다.",
     "EggSpecies": "이 포켓몬 종류의 알은 얻을 수 없습니다.",
     "EggUnhatched": "사용할 수 있는 부화 전 알입니다.",
@@ -148,6 +148,10 @@
     "G3EReader": "일본판이 아닌 버전의 섀도우 E-reader 포켓몬입니다. 배포되지 않은 인카운터입니다.",
     "G3OTGender": "콜로세움/XD 버전에서는 여성 어버이를 사용할 수 없습니다.",
     "G4InvalidTileR45Surf": "성도 45번 도로는 물 타일에 접근할 수 없으므로 파도타기 인카운터가 불가능합니다.",
+    "G4PartnerMoodEgg": "Eggs cannot have an Mood stat value.",
+    "G4PartnerMoodZero": "Mood stat value should be zero when not in the player's party.",
+    "G4ShinyLeafBitsInvalid": "Shiny Leaf/Crown bits are not valid.",
+    "G4ShinyLeafBitsEgg": "알은 빛나는나뭇잎/왕관을 가질 수 없습니다.",
     "G5IVAll30": "N이 소유한 포켓몬의 IV는 30이어야 합니다.",
     "G5PIDShinyGrotto": "은혈에서 포획한 포켓몬은 색이 다를 수 없습니다.",
     "G5SparkleInvalid": "게임 내 특수한 N 전용 반짝임 플래그가 켜져 있지 않아야 합니다.",
diff --git a/PKHeX.Core/Resources/localize/legality/legality_zh-hans.json b/PKHeX.Core/Resources/localize/legality/legality_zh-hans.json
index f68de2f4a..ed4414e2e 100644
--- a/PKHeX.Core/Resources/localize/legality/legality_zh-hans.json
+++ b/PKHeX.Core/Resources/localize/legality/legality_zh-hans.json
@@ -35,8 +35,10 @@
     "ContestZeroSheen": "华丽大赛光泽度应为0。",
     "ContestSheenGEQ_0": "华丽大赛光泽度应 >= {0}。",
     "ContestSheenLEQ_0": "华丽大赛光泽度应 <= {0}。",
-    "DateOutsideConsoleWindow": "本地日期超出主机日期范围。",
-    "DateTimeClockInvalid": "本地时间不符合有效时间戳格式。",
+    "DateCalendarInvalidMet": "Met Date is not a valid calendar date.",
+    "DateCalendarInvalidEgg": "Egg Met Date is not a valid calendar date.",
+    "DateLocalInvalidDate": "本地日期超出主机日期范围。",
+    "DateLocalInvalidTime": "本地时间不符合有效时间戳格式。",
     "DateOutsideDistributionWindow": "相遇日期在配信日期区间之外。",
     "EggContest": "不能增加蛋的华丽大赛状态。",
     "EggEXP": "蛋不能获得经验值。",
@@ -50,11 +52,9 @@
     "EggLocationTradeFail": "非法蛋取得场所, 不能在还是蛋时“交换”",
     "EggMetLocationFail": "不能在蛋取得场所获得蛋。",
     "EggNature": "不能改变蛋的能力性格（薄荷）。",
-    "EggPokeathlon": "蛋不能有全能竞技赛体能值。",
     "EggPP": "蛋不能有PP数变动。",
     "EggPPUp": "不能对蛋使用PP提升剂。",
     "EggRelearnFlags": "蛋没有回忆招式。",
-    "EggShinyLeaf": "蛋不能有闪光树叶/王冠。",
     "EggShinyPokeStar": "蛋无法成为宝可梦好莱坞之星。",
     "EggSpecies": "不能获得该种宝可梦的蛋。",
     "EggUnhatched": "合法孵化的蛋。",
@@ -148,6 +148,10 @@
     "G3EReader": "非日版黑暗E卡宝可梦。未解禁相遇方式。",
     "G3OTGender": "来自圆形竞技场/XD的初训家不能为女性。",
     "G4InvalidTileR45Surf": "城都45号水路的水面相遇类型，不可到达的水路。",
+    "G4PartnerMoodEgg": "Eggs cannot have an Mood stat value.",
+    "G4PartnerMoodZero": "Mood stat value should be zero when not in the player's party.",
+    "G4ShinyLeafBitsInvalid": "Shiny Leaf/Crown bits are not valid.",
+    "G4ShinyLeafBitsEgg": "蛋不能有闪光树叶/王冠。",
     "G5IVAll30": "N的宝可梦所有个体值应为30。",
     "G5PIDShinyGrotto": "在隐藏洞穴捕获的宝可梦不能为异色。",
     "G5SparkleInvalid": "特殊游戏内宝可梦N的闪光标记不应勾选。",
diff --git a/PKHeX.Core/Resources/localize/legality/legality_zh-hant.json b/PKHeX.Core/Resources/localize/legality/legality_zh-hant.json
index 5415df46c..5677706da 100644
--- a/PKHeX.Core/Resources/localize/legality/legality_zh-hant.json
+++ b/PKHeX.Core/Resources/localize/legality/legality_zh-hant.json
@@ -35,8 +35,10 @@
     "ContestZeroSheen": "華麗大賽光澤度應置「0」。",
     "ContestSheenGEQ_0": "華麗大賽光澤度應大於或等於「 {0} 」。",
     "ContestSheenLEQ_0": "華麗大賽光澤度應小於或等於「 {0} 」。",
-    "DateOutsideConsoleWindow": "Local Date is outside of console's local time window.",
-    "DateTimeClockInvalid": "Local Time is not a valid timestamp.",
+    "DateCalendarInvalidMet": "Met Date is not a valid calendar date.",
+    "DateCalendarInvalidEgg": "Egg Met Date is not a valid calendar date.",
+    "DateLocalInvalidDate": "Local Date is outside of console's local time window.",
+    "DateLocalInvalidTime": "Local Time is not a valid timestamp.",
     "DateOutsideDistributionWindow": "遇見日期於神秘禮物配信期間之外。",
     "EggContest": "不能調整蛋之華麗大賽狀態。",
     "EggEXP": "蛋不能獲得經驗值。",
@@ -50,11 +52,9 @@
     "EggLocationTradeFail": "不合法之蛋取得場所, 無法於寶可夢仍是蛋時「連線交換」。",
     "EggMetLocationFail": "無法於設定之蛋取得場所獲得該蛋。",
     "EggNature": "無法使用「薄荷」修正蛋之性格。",
-    "EggPokeathlon": "蛋不能有全能競技賽體能值。",
     "EggPP": "蛋不能修改 PP 值。",
     "EggPPUp": "不能對蛋使用 PP 提升劑。",
     "EggRelearnFlags": "預期不會重新學習技能標記。",
-    "EggShinyLeaf": "蛋不能携帶閃耀的葉片/王冠。",
     "EggShinyPokeStar": "蛋無法成為寶可夢好萊塢之星。",
     "EggSpecies": "不能獲得該種寶可夢之蛋。",
     "EggUnhatched": "合法孵化之蛋。",
@@ -148,6 +148,10 @@
     "G3EReader": "非日版黑暗E-reader寶可夢。未解禁之遇見方式。",
     "G3OTGender": "來自圓形競技場/暗黑旋風XD之初訓家不能為女性。",
     "G4InvalidTileR45Surf": "城都45號道路之水面遇見類型，但該水道不可到達。",
+    "G4PartnerMoodEgg": "Eggs cannot have an Mood stat value.",
+    "G4PartnerMoodZero": "Mood stat value should be zero when not in the player's party.",
+    "G4ShinyLeafBitsInvalid": "Shiny Leaf/Crown bits are not valid.",
+    "G4ShinyLeafBitsEgg": "蛋不能携帶閃耀的葉片/王冠。",
     "G5IVAll30": "N的寶可夢所有個體值應為30。",
     "G5PIDShinyGrotto": "於隱藏洞穴捕獲之寶可夢不能為異色。",
     "G5SparkleInvalid": "特殊遊戲內寶可夢N的異色標記不應勾選。",
diff --git a/PKHeX.Core/Resources/localize/movesource/movesource_de.json b/PKHeX.Core/Resources/localize/movesource/movesource_de.json
index 93d7e4c80..724d1a1b3 100644
--- a/PKHeX.Core/Resources/localize/movesource/movesource_de.json
+++ b/PKHeX.Core/Resources/localize/movesource/movesource_de.json
@@ -18,4 +18,4 @@
     "EggInvalid": "Unerwartete Ei-Attacke.",
     "EggLevelUp": "Vererbte Attacke durch Level-Aufstieg erlernt.",
     "LevelUpSuffix": " @ lv{0}"
-}
+}
\ No newline at end of file
diff --git a/PKHeX.Core/Resources/localize/movesource/movesource_en.json b/PKHeX.Core/Resources/localize/movesource/movesource_en.json
index 000b7c93b..ee66b57fc 100644
--- a/PKHeX.Core/Resources/localize/movesource/movesource_en.json
+++ b/PKHeX.Core/Resources/localize/movesource/movesource_en.json
@@ -18,4 +18,4 @@
     "EggInvalid": "Not an expected Egg move.",
     "EggLevelUp": "Inherited move learned by Level-up.",
     "LevelUpSuffix": " @ lv{0}"
-}
+}
\ No newline at end of file
diff --git a/PKHeX.Core/Resources/localize/movesource/movesource_es.json b/PKHeX.Core/Resources/localize/movesource/movesource_es.json
index cf08d4a8e..9bd46e85b 100644
--- a/PKHeX.Core/Resources/localize/movesource/movesource_es.json
+++ b/PKHeX.Core/Resources/localize/movesource/movesource_es.json
@@ -18,4 +18,4 @@
     "EggInvalid": "Movimiento Huevo no esperado.",
     "EggLevelUp": "Movimiento heredado aprendido por subida de nivel.",
     "LevelUpSuffix": " @ lv{0}"
-}
+}
\ No newline at end of file
diff --git a/PKHeX.Core/Resources/localize/movesource/movesource_fr.json b/PKHeX.Core/Resources/localize/movesource/movesource_fr.json
index 08f1f2cb7..1a5bd98cb 100644
--- a/PKHeX.Core/Resources/localize/movesource/movesource_fr.json
+++ b/PKHeX.Core/Resources/localize/movesource/movesource_fr.json
@@ -18,4 +18,4 @@
     "EggInvalid": "Attaque Œuf non attendue.",
     "EggLevelUp": "Attaque héritée apprise par montée de niveau.",
     "LevelUpSuffix": " @ lv{0}"
-}
+}
\ No newline at end of file
diff --git a/PKHeX.Core/Resources/localize/movesource/movesource_it.json b/PKHeX.Core/Resources/localize/movesource/movesource_it.json
index 78ed22277..a4f0ccb08 100644
--- a/PKHeX.Core/Resources/localize/movesource/movesource_it.json
+++ b/PKHeX.Core/Resources/localize/movesource/movesource_it.json
@@ -18,4 +18,4 @@
     "EggInvalid": "Mossa Uovo non prevista.",
     "EggLevelUp": "Mossa ereditata appresa per aumento di livello.",
     "LevelUpSuffix": " @ lv{0}"
-}
+}
\ No newline at end of file
diff --git a/PKHeX.Core/Resources/localize/movesource/movesource_ja.json b/PKHeX.Core/Resources/localize/movesource/movesource_ja.json
index 4b9797a62..f13ce81fd 100644
--- a/PKHeX.Core/Resources/localize/movesource/movesource_ja.json
+++ b/PKHeX.Core/Resources/localize/movesource/movesource_ja.json
@@ -18,4 +18,4 @@
     "EggInvalid": "期待されないタマゴ技。",
     "EggLevelUp": "遺伝レベルアップ技。",
     "LevelUpSuffix": " @ lv{0}"
-}
+}
\ No newline at end of file
diff --git a/PKHeX.Core/Resources/localize/movesource/movesource_ko.json b/PKHeX.Core/Resources/localize/movesource/movesource_ko.json
index 5d09d8c6d..e3f968d85 100644
--- a/PKHeX.Core/Resources/localize/movesource/movesource_ko.json
+++ b/PKHeX.Core/Resources/localize/movesource/movesource_ko.json
@@ -18,4 +18,4 @@
     "EggInvalid": "예상되지 않은 알 기술.",
     "EggLevelUp": "유전된 레벨업 기술.",
     "LevelUpSuffix": " @ lv{0}"
-}
+}
\ No newline at end of file
diff --git a/PKHeX.Core/Resources/localize/movesource/movesource_zh-hans.json b/PKHeX.Core/Resources/localize/movesource/movesource_zh-hans.json
index fee1a6e6f..19db03f99 100644
--- a/PKHeX.Core/Resources/localize/movesource/movesource_zh-hans.json
+++ b/PKHeX.Core/Resources/localize/movesource/movesource_zh-hans.json
@@ -18,4 +18,4 @@
     "EggInvalid": "非预期的蛋招式。",
     "EggLevelUp": "遗传升级学会的招式。",
     "LevelUpSuffix": " @ lv{0}"
-}
+}
\ No newline at end of file
diff --git a/PKHeX.Core/Resources/localize/movesource/movesource_zh-hant.json b/PKHeX.Core/Resources/localize/movesource/movesource_zh-hant.json
index a6524317a..13fccabbc 100644
--- a/PKHeX.Core/Resources/localize/movesource/movesource_zh-hant.json
+++ b/PKHeX.Core/Resources/localize/movesource/movesource_zh-hant.json
@@ -18,4 +18,4 @@
     "EggInvalid": "非預期的蛋招式。",
     "EggLevelUp": "遺傳升級學會的招式。",
     "LevelUpSuffix": " @ lv{0}"
-}
+}
\ No newline at end of file
diff --git a/PKHeX.Core/Saves/SAV4.cs b/PKHeX.Core/Saves/SAV4.cs
index f014cb9c8..32647da21 100644
--- a/PKHeX.Core/Saves/SAV4.cs
+++ b/PKHeX.Core/Saves/SAV4.cs
@@ -370,7 +370,7 @@ public int Region
     protected sealed override PK4 GetPKM(byte[] data) => new(data);
     protected sealed override byte[] DecryptPKM(byte[] data) => PokeCrypto.DecryptArray45(data);
 
-    protected sealed override void SetPKM(PKM pk, bool isParty = false)
+    protected override void SetPKM(PKM pk, bool isParty = false)
     {
         var pk4 = (PK4)pk;
         // Apply to this Save File
diff --git a/PKHeX.Core/Saves/SAV4HGSS.cs b/PKHeX.Core/Saves/SAV4HGSS.cs
index a46a06f62..bc1e7b1e3 100644
--- a/PKHeX.Core/Saves/SAV4HGSS.cs
+++ b/PKHeX.Core/Saves/SAV4HGSS.cs
@@ -178,6 +178,13 @@ public void SetBoxWallpaper(int box, int value)
     }
     #endregion
 
+    protected override void SetPKM(PKM pk, bool isParty = false)
+    {
+        base.SetPKM(pk, isParty);
+        if (!isParty)
+            ((PK4)pk).PartnerMood = 0;
+    }
+
     public override IReadOnlyList<InventoryPouch> Inventory
     {
         get