diff --git a/Legacy/Legacy.csproj b/Legacy/Legacy.csproj
index 29e2a90a..10df84d9 100644
--- a/Legacy/Legacy.csproj
+++ b/Legacy/Legacy.csproj
@@ -106,6 +106,7 @@
     <Compile Include="WestGate\ArcUSF.cs" />
     <Compile Include="WestGate\ArcUWF.cs" />
     <Compile Include="WestGate\ImageNBMP.cs" />
+    <Compile Include="Witch\ArcARC.cs" />
     <Compile Include="YellowCap\ImageGEF.cs" />
     <Compile Include="YellowCap\ImageGGF.cs" />
   </ItemGroup>
@@ -120,6 +121,7 @@
     </ProjectReference>
   </ItemGroup>
   <ItemGroup>
+    <Folder Include="Mina\" />
     <Folder Include="PenguinWorks\" />
   </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
diff --git a/Legacy/Witch/ArcARC.cs b/Legacy/Witch/ArcARC.cs
new file mode 100644
index 00000000..da276eec
--- /dev/null
+++ b/Legacy/Witch/ArcARC.cs
@@ -0,0 +1,83 @@
+//! \file       ArcARC.cs
+//! \date       2018 Jan 15
+//! \brief      Witch 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;
+
+// [000708][Witch] Milkyway
+
+namespace GameRes.Formats.Witch
+{
+    [Export(typeof(ArchiveFormat))]
+    public class ArcOpener : ArchiveFormat
+    {
+        public override string         Tag { get { return "ARC/WITCH"; } }
+        public override string Description { get { return "Witch resource archive"; } }
+        public override uint     Signature { get { return 0x20435241; } } // 'ARC '
+        public override bool  IsHierarchic { get { return false; } }
+        public override bool      CanWrite { get { return false; } }
+
+        public override ArcFile TryOpen (ArcView file)
+        {
+            if (file.View.ReadInt32 (4) != 0)
+                return null;
+            using (var index = file.CreateStream())
+            {
+                long index_pos = 0x10;
+                var id = new byte[8];
+                var dir = new List<Entry>();
+                for (;;)
+                {
+                    index.Position = index_pos;
+                    if (8 != index.Read (id, 0, 8))
+                        return null;
+                    if (!id.AsciiEqual ("DIR \0\0\0\0"))
+                        break;
+                    index.ReadInt32();
+                    int name_length = index.ReadInt32();
+                    if (name_length <= 0)
+                        return null;
+                    index.Seek (0x10, SeekOrigin.Current);
+                    uint size   = index.ReadUInt32();
+                    uint offset = index.ReadUInt32();
+                    var name = index.ReadCString (name_length);
+                    index_pos += 0x28 + name_length;
+
+                    var entry = FormatCatalog.Instance.Create<Entry> (name);
+                    entry.Offset = offset;
+                    entry.Size = size;
+                    if (!entry.CheckPlacement (file.MaxOffset))
+                        return null;
+                    dir.Add (entry);
+                }
+                if (0 == dir.Count)
+                    return null;
+                return new ArcFile (file, this, dir);
+            }
+        }
+    }
+}