diff --git a/ArcFormats/ArcFormats.csproj b/ArcFormats/ArcFormats.csproj
index 470ef4c1..cfeb8b27 100644
--- a/ArcFormats/ArcFormats.csproj
+++ b/ArcFormats/ArcFormats.csproj
@@ -105,6 +105,7 @@
+
diff --git a/ArcFormats/Kurumi/ImageGRA.cs b/ArcFormats/Kurumi/ImageGRA.cs
new file mode 100644
index 00000000..9005bcfc
--- /dev/null
+++ b/ArcFormats/Kurumi/ImageGRA.cs
@@ -0,0 +1,69 @@
+//! \file ImageGRA.cs
+//! \date Tue Mar 28 06:35:39 2017
+//! \brief Virgin Snow image format.
+//
+// Copyright (C) 2017 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 GameRes.Compression;
+
+namespace GameRes.Formats.Kurumi
+{
+ [Export(typeof(ImageFormat))]
+ public class GraFormat : ImageFormat
+ {
+ public override string Tag { get { return "GRA/VS"; } }
+ public override string Description { get { return "Virgin Snow image format"; } }
+ public override uint Signature { get { return 0x67726956; } } // 'Virg'
+
+ static readonly byte[] Key = { 0x5A, 0xA5 };
+
+ public override ImageMetaData ReadMetaData (IBinaryStream file)
+ {
+ var header = file.ReadHeader (0x20);
+ if (!header.AsciiEqual ("Virgin Snow Compressed Data 1.0"))
+ return null;
+ using (var bmp = UnpackStream (file))
+ return Bmp.ReadMetaData (bmp);
+ }
+
+ public override ImageData Read (IBinaryStream file, ImageMetaData info)
+ {
+ file.Position = 0x20;
+ using (var bmp = UnpackStream (file))
+ return Bmp.Read (bmp, info);
+ }
+
+ IBinaryStream UnpackStream (IBinaryStream file)
+ {
+ Stream input = new ByteStringEncryptedStream (file.AsStream, Key, true);
+ input = new ZLibStream (input, CompressionMode.Decompress);
+ return new BinaryStream (input, file.Name);
+ }
+
+ public override void Write (Stream file, ImageData image)
+ {
+ throw new System.NotImplementedException ("GraFormat.Write not implemented");
+ }
+ }
+}