diff --git a/NHSE.Core/Structures/Misc/GSaveBBS.cs b/NHSE.Core/Structures/Misc/GSaveBBS.cs
new file mode 100644
index 0000000..33e3adf
--- /dev/null
+++ b/NHSE.Core/Structures/Misc/GSaveBBS.cs
@@ -0,0 +1,113 @@
+using System.Runtime.InteropServices;
+// ReSharper disable FieldCanBeMadeReadOnly.Global
+// ReSharper disable MemberCanBePrivate.Global
+
+#pragma warning disable CS8618, CA1815
+namespace NHSE.Core
+{
+    [StructLayout(LayoutKind.Sequential, Pack = 1, Size = SIZE, CharSet = CharSet.Unicode)]
+    public struct GSaveBulletinBoard
+    {
+        public const int SIZE = 0xe0ae8;
+
+        public GSaveDate BuiltDate;                            // @0x0 size 0x4, align 2
+        public bool _3347e149;                                 // @0x4 size 0x1, align 1
+        public BulletinBoardStock Stock;                       // @0x8 size 0xe0ad8, align 8
+        public uint LatestUniqueId;                            // @0xe0ae0 size 0x4, align 4
+    };
+
+    public struct BulletinBoardStock
+    {
+        public const int SIZE = 0xe0ad8;
+        public const int MaxCount = 30;
+
+        [field: MarshalAs(UnmanagedType.ByValArray, SizeConst = MaxCount)]
+        public GSaveBBS[] Buffer;                                // @0x0 size 0x77d0, align 8
+
+        [field: MarshalAs(UnmanagedType.ByValArray, SizeConst = MaxCount)]
+        public int[] IndexTable;                                 // @0xe0a60 size 0x4, align 4
+    }
+
+    [StructLayout(LayoutKind.Sequential, Pack = 1, Size = SIZE, CharSet = CharSet.Unicode)]
+    public struct GSaveBBS
+    {
+        public const int SIZE = 0x77d0;
+
+        public GSaveDate Date;                                      // @0x0 size 0x4, align 2
+
+        [field: MarshalAs(UnmanagedType.ByValTStr, SizeConst = 240/2)]
+        public string Body;                                         // @0x4 size 0x1e0, align 2
+
+        [field: MarshalAs(UnmanagedType.ByValTStr, SizeConst = 48/2)]
+        public string Footer;                                       // @0x1e4 size 0x60, align 2
+
+        public Handwriting HandWrite;                               // @0x244 size 0x7538, align 4
+        public GSavePlayerId PlayerId;                              // @0x777c size 0x38, align 4
+        public ushort _5d1fcb04;                                    // @0x77b4 size 0x2, align 2
+        public ushort DesignId;                                     // @0x77b6 size 0x2, align 2
+        public ulong PopId;                                         // @0x77b8 size 0x8, align 8
+        public ulong NsaId;                                         // @0x77c0 size 0x8, align 8
+        public uint UniqueId;                                       // @0x77c8 size 0x4, align 4
+    }
+
+    [StructLayout(LayoutKind.Sequential, Pack = 1, Size = SIZE)]
+    public struct GSaveDate
+    {
+        public const int SIZE = 4;
+
+        public ushort Year;
+        public byte Month;
+        public byte Day;
+    }
+
+    [StructLayout(LayoutKind.Sequential, Pack = 1, Size = SIZE)]
+    public struct Handwriting
+    {
+        public const int SIZE = 0x7538;
+
+        public const int InkCount = 30_000;
+
+        [field: MarshalAs(UnmanagedType.ByValArray, SizeConst = InkCount)]
+        public byte[] Image;
+
+        [field: MarshalAs(UnmanagedType.ByValArray, SizeConst = 4)]
+        public byte[] Palette;
+
+        public uint VerticesNum;
+    }
+
+    [StructLayout(LayoutKind.Sequential, Pack = 1, Size = SIZE)]
+    public struct GSavePlayerId
+    {
+        public const int SIZE = 0x38;
+        public GSaveLandId LandId;
+        public GSavePlayerBaseId BaseId;
+    }
+
+    [StructLayout(LayoutKind.Sequential, Pack = 4, Size = SIZE, CharSet = CharSet.Unicode)]
+    public struct GSaveLandId
+    {
+        public const int SIZE = 0x1C;
+
+        public uint Id;
+
+        [field: MarshalAs(UnmanagedType.ByValTStr, SizeConst = 0x14 / 2)]
+        public string Name;
+
+        public byte IslandRubyType;
+    }
+
+    [StructLayout(LayoutKind.Sequential, Pack = 4, Size = SIZE, CharSet = CharSet.Unicode)]
+    public struct GSavePlayerBaseId
+    {
+        public const int SIZE = 0x1C;
+
+        public uint Id;
+
+        [field: MarshalAs(UnmanagedType.ByValTStr, SizeConst = 0x14 / 2)]
+        public string Name;
+
+        public int Gender; // enum
+    }
+}
+#pragma warning restore CS8618, CA1815
diff --git a/NHSE.Tests/FancyMarshalTests.cs b/NHSE.Tests/FancyMarshalTests.cs
new file mode 100644
index 0000000..69a2a13
--- /dev/null
+++ b/NHSE.Tests/FancyMarshalTests.cs
@@ -0,0 +1,27 @@
+using FluentAssertions;
+using NHSE.Core;
+using Xunit;
+
+namespace NHSE.Tests
+{
+    public class FancyMarshalTests
+    {
+        [Fact] public void MarshalGSaveBulletinBoard() => MarshalBytesTestS<GSaveBulletinBoard>(GSaveBulletinBoard.SIZE);
+        [Fact] public void MarshalBulletinBoard() => MarshalBytesTestS<BulletinBoardStock>(BulletinBoardStock.SIZE);
+        [Fact] public void MarshalGSaveBBS() => MarshalBytesTestS<GSaveBBS>(GSaveBBS.SIZE);
+        [Fact] public void MarshalGSaveDate() => MarshalBytesTestS<GSaveDate>(GSaveDate.SIZE);
+        [Fact] public void MarshalGSavePlayerId() => MarshalBytesTestS<GSavePlayerId>(GSavePlayerId.SIZE);
+        [Fact] public void MarshalGSaveLandId() => MarshalBytesTestS<GSaveLandId>(GSaveLandId.SIZE);
+        [Fact] public void MarshalGSavePlayerBaseId() => MarshalBytesTestS<GSavePlayerBaseId>(GSavePlayerBaseId.SIZE);
+        [Fact] public void MarshalHandwriting() => MarshalBytesTestS<Handwriting>(Handwriting.SIZE);
+
+        private static void MarshalBytesTestS<T>(int size) where T : struct
+        {
+            var bytes = new byte[size];
+            var obj = bytes.ToStructure<T>();
+
+            var decomputed = obj.ToBytes();
+            decomputed.Length.Should().Be(size);
+        }
+    }
+}