diff --git a/Legacy/Legacy.csproj b/Legacy/Legacy.csproj
index 892fc10b..8ffa4ee3 100644
--- a/Legacy/Legacy.csproj
+++ b/Legacy/Legacy.csproj
@@ -114,6 +114,7 @@
+
diff --git a/Legacy/Unison/ArcVCT.cs b/Legacy/Unison/ArcVCT.cs
new file mode 100644
index 00000000..f3419dab
--- /dev/null
+++ b/Legacy/Unison/ArcVCT.cs
@@ -0,0 +1,138 @@
+//! \file ArcVCT.cs
+//! \date 2018 Feb 17
+//! \brief Unison Shift resource archive.
+//
+// Copyright (C) 2018 by morkt
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to
+// deal in the Software without restriction, including without limitation the
+// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+// sell copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+// IN THE SOFTWARE.
+//
+
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.Composition;
+using System.IO;
+
+// [000225][Unison Shift] Moe ~Moegiiro no Machi~
+
+namespace GameRes.Formats.Unison
+{
+ [Export(typeof(ArchiveFormat))]
+ public class VctOpener : ArchiveFormat
+ {
+ public override string Tag { get { return "VCT"; } }
+ public override string Description { get { return "Unison Shift resource archive"; } }
+ public override uint Signature { get { return 0; } }
+ public override bool IsHierarchic { get { return false; } }
+ public override bool CanWrite { get { return false; } }
+
+ public override ArcFile TryOpen (ArcView file)
+ {
+ int idx_count = file.View.ReadByte (0);
+ if (0 == idx_count)
+ return null;
+ int index_offset = 1 + idx_count * 3;
+ int count = file.View.ReadInt32 (index_offset);
+ if (!IsSaneCount (count))
+ return null;
+ index_offset += 4;
+ uint index_size = (uint)count * 0x20;
+ if (index_size > file.View.Reserve (index_offset, index_size))
+ return null;
+
+ var dir = new List (count);
+ for (int i = 0; i < count; ++i)
+ {
+ string name = file.View.ReadString (index_offset, 0x14).TrimEnd();
+ string ext = file.View.ReadString (index_offset+0x14, 3);
+ if (!string.IsNullOrWhiteSpace (ext))
+ name += '.' + ext;
+ var entry = FormatCatalog.Instance.Create (name);
+ entry.Offset = file.View.ReadUInt32 (index_offset+0x18);
+ entry.Size = file.View.ReadUInt32 (index_offset+0x1C);
+ if (!entry.CheckPlacement (file.MaxOffset))
+ return null;
+ dir.Add (entry);
+ index_offset += 0x20;
+ }
+ return new ArcFile (file, this, dir);
+ }
+
+ public override Stream OpenEntry (ArcFile arc, Entry entry)
+ {
+ if (!arc.File.View.AsciiEqual (entry.Offset, "LZS\0"))
+ return base.OpenEntry (arc, entry);
+ using (var input = arc.File.CreateStream (entry.Offset, entry.Size))
+ {
+ var data = LzsUnpack (input);
+ if (data.AsciiEqual ("BM") && 32 == data.ToUInt16 (0x1C))
+ FixBitmapAlpha (data);
+ return new BinMemoryStream (data, entry.Name);
+ }
+ }
+
+ byte[] LzsUnpack (IBinaryStream input)
+ {
+ input.ReadInt32();
+ int unpacked_size = input.ReadInt32();
+ int packed_size = input.ReadInt32();
+ int ctl_size = input.ReadInt32();
+ var ctl = input.ReadBytes (ctl_size);
+ var output = new byte[unpacked_size];
+ var frame = new byte[0x1000];
+ int frame_pos = 1;
+ int src = 0;
+ int dst = 0;
+ int bits = 2;
+ while (dst < unpacked_size)
+ {
+ bits >>= 1;
+ if (1 == bits)
+ {
+ bits = ctl[src++] | 0x100;
+ }
+ if (0 != (bits & 1))
+ {
+ output[dst++] = frame[frame_pos++ & 0xFFF] = input.ReadUInt8();
+ }
+ else
+ {
+ int offset = input.ReadUInt16();
+ int count = (offset >> 12) + 2;
+ while (count --> 0)
+ {
+ byte b = frame[offset++ & 0xFFF];
+ output[dst++] = frame[frame_pos++ & 0xFFF] = b;
+ }
+ }
+ }
+ return output;
+ }
+
+ void FixBitmapAlpha (byte[] bmp)
+ {
+ for (int pos = bmp.ToInt32 (0xA); pos < bmp.Length; pos += 4)
+ {
+ byte r = bmp[pos];
+ bmp[pos] = bmp[pos+2];
+ bmp[pos+2] = r;
+ bmp[pos+3] ^= 0xFF;
+ }
+ }
+ }
+}