diff --git a/ArcFormats/ArcFormats.csproj b/ArcFormats/ArcFormats.csproj
index 224381a5..c0c6a083 100644
--- a/ArcFormats/ArcFormats.csproj
+++ b/ArcFormats/ArcFormats.csproj
@@ -82,6 +82,7 @@
     <Compile Include="Hexenhaus\ArcARCC.cs" />
     <Compile Include="Hexenhaus\ArcODIO.cs" />
     <Compile Include="Hexenhaus\ArcWAG.cs" />
+    <Compile Include="Ikura\ImageYGP.cs" />
     <Compile Include="ImageLZ.cs" />
     <Compile Include="KiriKiri\ChainReactionCrypt.cs" />
     <Compile Include="MnoViolet\ImageDIF.cs" />
diff --git a/ArcFormats/Ikura/ImageYGP.cs b/ArcFormats/Ikura/ImageYGP.cs
new file mode 100644
index 00000000..2ba18d6b
--- /dev/null
+++ b/ArcFormats/Ikura/ImageYGP.cs
@@ -0,0 +1,142 @@
+//! \file       ImageYGP.cs
+//! \date       Sun Mar 20 13:24:00 2016
+//! \brief      YGP image format.
+//
+// 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.ComponentModel.Composition;
+using System.IO;
+using System.Windows.Media;
+using GameRes.Utility;
+
+namespace GameRes.Formats.Ikura
+{
+    internal class YgpMetaData : ImageMetaData
+    {
+        public byte Type;
+        public byte Flags;
+        public int  DataOffset;
+        public int  DataSize;
+    }
+
+    [Export(typeof(ImageFormat))]
+    public class YgpFormat : ImageFormat
+    {
+        public override string         Tag { get { return "YGP"; } }
+        public override string Description { get { return "Ikura GDL image format"; } }
+        public override uint     Signature { get { return 0x504759; } } // 'YGP'
+
+        public override ImageMetaData ReadMetaData (Stream stream)
+        {
+            stream.Position = 4;
+            using (var reader = new ArcView.Reader (stream))
+            {
+                int mask_pos = reader.ReadUInt16();         // 04
+                byte type = reader.ReadByte();              // 06
+                if (type != 1 && type != 2)
+                    return null;
+                var info = new YgpMetaData { Type = type, BPP = 32 };
+                info.Flags = reader.ReadByte();             // 07
+                int header_size = reader.ReadInt32();       // 08
+                stream.Position = header_size;
+                info.DataSize = reader.ReadInt32();         // XX+00
+                info.Width = reader.ReadUInt16();           // XX+04
+                info.Height = reader.ReadUInt16();          // XX+06
+                info.DataOffset = header_size+8;
+                if (0 != (info.Flags & 4))
+                {
+                    stream.Position = 0x14;
+                    info.OffsetX = reader.ReadInt16();
+                    info.OffsetY = reader.ReadInt16();
+                }
+                return info;
+            }
+        }
+
+        public override ImageData Read (Stream stream, ImageMetaData info)
+        {
+            var meta = (YgpMetaData)info;
+            stream.Position = meta.DataOffset;
+            int stride = (int)meta.Width * 4;
+            var pixels = new byte[stride * (int)meta.Height];
+            if (0 != (meta.Flags & 1))
+            {
+                using (var reader = new ArcView.Reader (stream))
+                    Unpack (reader, meta.DataSize, pixels);
+            }
+            else
+                stream.Read (pixels, 0, pixels.Length);
+            return ImageData.Create (info, PixelFormats.Bgra32, null, pixels);
+        }
+
+        void Unpack (BinaryReader input, int input_size, byte[] output)
+        {
+            int dst = 0;
+            while (input_size > 0)
+            {
+                int count;
+                int ctl = input.ReadByte();
+                --input_size;
+                if (0 == (ctl & 0xC0))
+                {
+                    count = ((ctl & 0x3F) + 1) * 4;
+                    input.Read (output, dst, count);
+                    input_size -= count;
+                }
+                else
+                {
+                    int offset;
+                    if (0x40 == (ctl & 0xC0))
+                    {
+                        count = (ctl & 0x3F) + 1;
+                        offset = 1;
+                    }
+                    else if (0x80 == (ctl & 0xE0))
+                    {
+                        count = (ctl & 0x1F) + 1;
+                        offset = input.ReadByte();
+                        --input_size;
+                    }
+                    else if (0xA0 == (ctl & 0xE0))
+                    {
+                        count = (ctl & 0x1F) + 1;
+                        offset = input.ReadUInt16();
+                        input_size -= 2;
+                    }
+                    else
+                    {
+                        continue;
+                    }
+                    count *= 4;
+                    offset *= 4;
+                    Binary.CopyOverlapped (output, dst-offset, dst, count);
+                }
+                dst += count;
+            }
+        }
+
+        public override void Write (Stream file, ImageData image)
+        {
+            throw new System.NotImplementedException ("YgpFormat.Write not implemented");
+        }
+    }
+}
diff --git a/supported.html b/supported.html
index b4a97aa9..46181cd8 100644
--- a/supported.html
+++ b/supported.html
@@ -40,7 +40,7 @@ Melty Moment<br/>
 Traveling Stars<br/>
 </td></tr>
 <tr><td>-</td><td><tt>CompressedBG___</tt></td><td>No</td></tr>
-<tr class="odd"><td>*</td><td>-<br/><tt>SM2MPX10</tt></td><td>No</td><td rowspan="4">DRS</td><td rowspan="4">
+<tr class="odd"><td>*</td><td>-<br/><tt>SM2MPX10</tt></td><td>No</td><td rowspan="5">DRS</td><td rowspan="5">
 Anata no Osanazuma<br/>
 Ecchi na Bunny-san wa Kirai?<br/>
 Kana ~Imouto~<br/>
@@ -54,12 +54,14 @@ Salmon Pink<br/>
 Shisho-san to Issho<br/>
 Sensei 2<br/>
 Shoujo Settai<br/>
+Sumeragi no Miko-tachi<br/>
 Suzuri-sensei to 26-ko no Ecchi na Oppai<br/>
 Tsukushite Agechau series<br/>
 </td></tr>
 <tr class="odd"><td>*.ggd</td><td><tt>\xB9\xAA\xB3\xB3</tt><br/><tt>\xAB\xAD\xAA\xBA</tt><br/><tt>\xB7\xB6\xB8\xB7</tt><br/><tt>\xCD\xCA\xC9\xB8</tt></td><td>Yes</td></tr>
 <tr class="odd"><td>*.gg1<br/>*.gg2<br/>*.gg3<br/>*.gg0</td><td><tt>GGA00000</tt></td><td>No</td></tr>
 <tr class="odd"><td>*.ggp</td><td><tt>GGPFAIKE</tt></td><td>No</td></tr>
+<tr class="odd"><td>*.ygp</td><td><tt>YGP</tt></td><td>No</td></tr>
 <tr><td>*.bin</td><td><tt>ACPXPK01</tt></td><td>No</td><td>Escu:de<br/>Unison Shift</td><td>
 Eiyuu x Maou<br/>
 Wasurenagusa ~Forget-me-Not~<br/>