diff --git a/Legacy/Nabe/ImageYPF.cs b/Legacy/Nabe/ImageYPF.cs
new file mode 100644
index 00000000..047b6995
--- /dev/null
+++ b/Legacy/Nabe/ImageYPF.cs
@@ -0,0 +1,91 @@
+//! \file       ImageYPF.cs
+//! \date       2017 Dec 12
+//! \brief      Old 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 System.Windows.Media;
+
+namespace GameRes.Formats.Nabe
+{
+    [Export(typeof(ImageFormat))]
+    public class YpfFormat : ImageFormat
+    {
+        public override string         Tag { get { return "YPF/NABE"; } }
+        public override string Description { get { return "Studio Nabe Bugyou image format"; } }
+        public override uint     Signature { get { return 0; } }
+
+        public YpfFormat ()
+        {
+            Signatures = new uint[] { 0, 1, 2, 3 };
+        }
+
+        public override ImageMetaData ReadMetaData (IBinaryStream file)
+        {
+            if (!file.Name.HasExtension (".ypf"))
+                return null;
+            var header = file.ReadHeader (0x10);
+            if (header[0] != 1 && header[0] != 3)
+                return null;
+            uint w = header.ToUInt32 (4);
+            uint h = header.ToUInt32 (8);
+            if (0 == w || w > 0x8000 || 0 == h || h > 0x8000)
+                return null;
+            return new ImageMetaData {
+                Width = w,
+                Height = h,
+                BPP = 1 == header[0] ? 24 : 32,
+            };
+        }
+
+        public override ImageData Read (IBinaryStream file, ImageMetaData info)
+        {
+            file.Position = 0x10;
+            int pixel_count = (int)info.Width * (int)info.Height;
+            var pixels = file.ReadBytes (pixel_count * 3);
+            if (32 == info.BPP)
+            {
+                var alpha = file.ReadBytes (pixel_count);
+                var output = new byte[pixel_count * 4];
+                int src = 0;
+                int dst = 0;
+                for (int i = 0; i < pixel_count; ++i)
+                {
+                    output[dst++] = pixels[src++];
+                    output[dst++] = pixels[src++];
+                    output[dst++] = pixels[src++];
+                    output[dst++] = alpha[i];
+                }
+                pixels = output;
+            }
+            PixelFormat format = 24 == info.BPP ? PixelFormats.Bgr24 : PixelFormats.Bgra32;
+            return ImageData.Create (info, format, null, pixels);
+        }
+
+        public override void Write (Stream file, ImageData image)
+        {
+            throw new System.NotImplementedException ("YpfFormat.Write not implemented");
+        }
+    }
+}