diff --git a/ArcFormats/ArcFormats.csproj b/ArcFormats/ArcFormats.csproj
index f08d931c..13a6fc79 100644
--- a/ArcFormats/ArcFormats.csproj
+++ b/ArcFormats/ArcFormats.csproj
@@ -230,6 +230,7 @@
     <Compile Include="RealLive\ImageG00.cs" />
     <Compile Include="RealLive\ImagePDT.cs" />
     <Compile Include="rUGP\ImageRIP.cs" />
+    <Compile Include="rUGP\ImageS5I.cs" />
     <Compile Include="ScrPlayer\ArcPAK.cs" />
     <Compile Include="ScrPlayer\ImageI.cs" />
     <Compile Include="ShiinaRio\WarcEncryption.cs" />
diff --git a/ArcFormats/rUGP/ImageS5I.cs b/ArcFormats/rUGP/ImageS5I.cs
new file mode 100644
index 00000000..e3ddcc82
--- /dev/null
+++ b/ArcFormats/rUGP/ImageS5I.cs
@@ -0,0 +1,73 @@
+//! \file       ImageS5I.cs
+//! \date       Wed Nov 09 16:25:17 2016
+//! \brief      rUGP engine 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;
+
+namespace GameRes.Formats.Rugp
+{
+    [Export(typeof(ImageFormat))]
+    public class S5iFormat : ImageFormat
+    {
+        public override string         Tag { get { return "S5I"; } }
+        public override string Description { get { return "rUGP engine image format"; } }
+        public override uint     Signature { get { return 0; } }
+
+        public override ImageMetaData ReadMetaData (IBinaryStream file)
+        {
+            if (file.Signature != CRioArchive.ObjectSignature)
+                return null;
+            var rio = new CRioArchive (file);
+            uint signature;
+            var class_ref = rio.LoadRioTypeCore (out signature);
+            uint object_pos = (uint)file.Position;
+            if ("CS5i" != class_ref)
+                return null;
+            file.Seek (8, SeekOrigin.Current);
+            return new RioMetaData
+            {
+                Width   = file.ReadUInt16(),
+                Height  = file.ReadUInt16(),
+                BPP     = 32,
+                ObjectOffset = object_pos,
+            };
+        }
+
+        public override ImageData Read (IBinaryStream file, ImageMetaData info)
+        {
+            var meta = (RioMetaData)info;
+            file.Position = meta.ObjectOffset + 0x14;
+            int size = file.ReadInt32();
+            var pixels = file.ReadBytes (size);
+            return ImageData.Create (info, PixelFormats.Bgra32, null, pixels);
+        }
+
+        public override void Write (Stream file, ImageData image)
+        {
+            throw new System.NotImplementedException ("S5iFormat.Write not implemented");
+        }
+    }
+}
diff --git a/supported.html b/supported.html
index 8ed027d5..5f195e4d 100644
--- a/supported.html
+++ b/supported.html
@@ -1108,6 +1108,7 @@ Eijin-sou<br/>
 Etsuraku no Tane<br/>
 Fuka no Jugoku<br/>
 Gakkou Yarashii Kaidan<br/>
+Gokkun♪ Vampire ☆ Princess<br/>
 Hanamaru! 2<br/>
 Hime Kami 1/2<br/>
 In'youchuu Goku ~Ryoujoku Jigoku Taimaroku~<br/>
@@ -1241,7 +1242,15 @@ Pigeon Blood<br/>
 <tr class="odd last"><td>*.adp</td><td>-</td><td>No</td></tr>
 <tr><td>*.cab</td><td><tt>PackDat3</tt></td><td>No</td><td>Entertainment<br/>Executive Engine</td><td>
 Ryoujoku Fukushuu Gakuen ~Rinkan no Houkago~<br/>
+Shin Onna Kyoushi Yuuwaku Shinro Shidoushitsu<br/>
 </td></tr>
+<tr class="odd"><td>*.dat</td><td>-</td><td>No</td><td>YaneSDK</td><td>
+Ore-sama no RagnaRock<br/>
+</td></tr>
+<tr><td>*.rio</td><td>-</td><td>No</td><td rowspan="2">age</td><td rowspan="2">
+Kaseki no Uta<br/>
+</td></tr>
+<tr class="last"><td>*.rip<br/>*.s5i</td><td>-</td><td>No</td></tr>
 </table>
 <p><a name="note-1" class="footnote">1</a> Non-encrypted only</p>
 </body>