diff --git a/ArcFormats/ArcFormats.csproj b/ArcFormats/ArcFormats.csproj
index 712603c7..e4562467 100644
--- a/ArcFormats/ArcFormats.csproj
+++ b/ArcFormats/ArcFormats.csproj
@@ -82,6 +82,7 @@
+
diff --git a/ArcFormats/DenSDK/ArcDAF.cs b/ArcFormats/DenSDK/ArcDAF.cs
new file mode 100644
index 00000000..83d839c7
--- /dev/null
+++ b/ArcFormats/DenSDK/ArcDAF.cs
@@ -0,0 +1,104 @@
+//! \file ArcDAF.cs
+//! \date Thu Jan 21 22:33:29 2016
+//! \brief DenSDK engine resource archive.
+//
+// Copyright (C) 2016 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;
+using GameRes.Compression;
+using GameRes.Utility;
+
+namespace GameRes.Formats.DenSdk
+{
+ [Export(typeof(ArchiveFormat))]
+ public class DatOpener : ArchiveFormat
+ {
+ public override string Tag { get { return "DAT/DenSDK"; } }
+ public override string Description { get { return "DenSDK resource archive"; } }
+ public override uint Signature { get { return 0x32464144; } } // 'DAF2'
+ public override bool IsHierarchic { get { return true; } }
+ public override bool CanCreate { get { return false; } }
+
+ public DatOpener ()
+ {
+ Extensions = new string[] { "dat" };
+ }
+
+ public override ArcFile TryOpen (ArcView file)
+ {
+ uint key = (uint)(file.View.ReadByte (0x20) << 24
+ | file.View.ReadByte (0x25) << 16
+ | file.View.ReadByte (0x2A) << 8
+ | file.View.ReadByte (0x2F));
+ int count = file.View.ReadInt32 (8) ^ (int)key;
+ if (!IsSaneCount (count))
+ return null;
+ uint packed_size = file.View.ReadUInt32 (0x10) ^ key;
+ uint unpacked_size = file.View.ReadUInt32 (0x14) ^ key;
+ uint base_offset = file.View.ReadUInt32 (0x1C) ^ key;
+ byte[] index = new byte[unpacked_size];
+ bool is_packed = file.View.ReadInt32 (0x18) == 1;
+ if (is_packed)
+ {
+ using (var input = file.CreateStream (0x30, packed_size))
+ using (var zindex = new ZLibStream (input, CompressionMode.Decompress))
+ zindex.Read (index, 0, index.Length);
+ base_offset = 0x30 + packed_size;
+ }
+ else
+ {
+ file.View.Read (0x30, index, 0, unpacked_size);
+ }
+ int index_offset = 0;
+ var dir = new List (count);
+ for (int i = 0; i < count; ++i)
+ {
+ int entry_size = LittleEndian.ToInt32 (index, index_offset) ^ (int)key;
+ if (entry_size < 0x30 || entry_size > index.Length-index_offset)
+ return null;
+ var name = Binary.GetCString (index, index_offset+0x34, entry_size-0x34);
+ var entry = FormatCatalog.Instance.Create (name);
+ entry.Offset = base_offset + (LittleEndian.ToUInt32 (index, index_offset+4) ^ (uint)key);
+ entry.Size = LittleEndian.ToUInt32 (index, index_offset+8) ^ (uint)key;
+ entry.UnpackedSize = LittleEndian.ToUInt32 (index, index_offset+0xC) ^ (uint)key;
+ entry.IsPacked = LittleEndian.ToInt32 (index, index_offset+0x30) != 0;
+ if (!entry.CheckPlacement (file.MaxOffset))
+ return null;
+ dir.Add (entry);
+ index_offset += entry_size;
+ }
+ return new ArcFile (file, this, dir);
+ }
+
+ public override Stream OpenEntry (ArcFile arc, Entry entry)
+ {
+ var input = arc.File.CreateStream (entry.Offset, entry.Size);
+ var pent = entry as PackedEntry;
+ if (null == pent || !pent.IsPacked)
+ return input;
+ return new ZLibStream (input, CompressionMode.Decompress);
+ }
+ }
+}
diff --git a/supported.html b/supported.html
index f4ef2e04..7f6cd349 100644
--- a/supported.html
+++ b/supported.html
@@ -330,6 +330,7 @@ Warusa
*.pak+*.idx
-
No
EAGLS
Futago Hinyuu x 3
Oppai Baka
+Oshiete! Yuiko Sensei
Mainichi Shabutte Ii Desu ka?
Senpai - Oppai - Kako ni Modori Pai