diff --git a/ArcFormats/NekoSDK/ImageALP.cs b/ArcFormats/NekoSDK/ImageALP.cs
index 4c698b48..0516c883 100644
--- a/ArcFormats/NekoSDK/ImageALP.cs
+++ b/ArcFormats/NekoSDK/ImageALP.cs
@@ -27,6 +27,7 @@ using System;
 using System.ComponentModel.Composition;
 using System.IO;
 using System.Windows.Media;
+using System.Windows.Media.Imaging;
 
 namespace GameRes.Formats.NekoSDK
 {
@@ -35,19 +36,32 @@ namespace GameRes.Formats.NekoSDK
     {
         public ImageData Read (IBinaryStream file, BmpMetaData info)
         {
-            if (info.BPP != 24 && info.BPP != 32 || !file.CanSeek)
+            if (!file.CanSeek)
                 return null;
             var alp_name = Path.ChangeExtension (info.FileName, "alp");
             if (alp_name.Equals (info.FileName, StringComparison.InvariantCultureIgnoreCase)
                 || !VFS.FileExists (alp_name))
                 return null;
-            var alpha_size = info.Width * info.Height;
+            int alp_stride = ((int)info.Width + 3) & -4;
+            int alpha_size = alp_stride * (int)info.Height;
             var alpha = new byte[alpha_size];
             using (var alp = VFS.OpenStream (alp_name))
             {
-                if (alpha.Length != alp.Read (alpha, 0, alpha.Length) || alp.ReadByte() != -1)
+                alpha_size = alp.Read (alpha, 0, alpha.Length);
+                if (alp.ReadByte() != -1)
                     return null;
+                if (alpha_size != alpha.Length)
+                {
+                    if (alp_stride == (int)info.Width)
+                        return null;
+                    alp_stride = (int)info.Width;
+                    if (alpha_size != alp_stride * (int)info.Height)
+                        return null;
+                }
             }
+            if (info.BPP != 24 && info.BPP != 32)
+                return ReadBmp (file, info, alpha, alp_stride);
+
             file.Position = info.ImageOffset;
             int dst_stride = (int)info.Width * 4;
             int gap = -((int)info.Width * info.BPP / 8) & 3;
@@ -56,7 +70,7 @@ namespace GameRes.Formats.NekoSDK
             int dst = (int)(info.Height-1) * dst_stride;
             for (int y = (int)info.Height-1; y >= 0; --y)
             {
-                int a_src = (int)info.Width * y;
+                int a_src = alp_stride * y;
                 for (int x = 0; x < dst_stride; x += 4)
                 {
                     file.Read (pixels, dst+x, src_pixel_size);
@@ -68,5 +82,29 @@ namespace GameRes.Formats.NekoSDK
             }
             return ImageData.Create (info, PixelFormats.Bgra32, null, pixels, dst_stride);
         }
+
+        public ImageData ReadBmp (IBinaryStream file, BmpMetaData info, byte[] alpha, int alp_stride)
+        {
+            var decoder = new BmpBitmapDecoder (file.AsStream,
+                BitmapCreateOptions.None, BitmapCacheOption.OnLoad);
+            BitmapSource bitmap = decoder.Frames[0];
+            bitmap = new FormatConvertedBitmap (bitmap, PixelFormats.Bgr32, null, 0);
+            int dst_stride = (int)info.Width * 4;
+            var pixels = new byte[(int)info.Height * dst_stride];
+            bitmap.CopyPixels (pixels, dst_stride, 0);
+            int dst = 0;
+            int src = 0;
+            for (int y = (int)info.Height; y > 0; --y)
+            {
+                int a_src = src;
+                for (int x = 3; x < dst_stride; x += 4)
+                {
+                    pixels[dst+x] = alpha[a_src++];
+                }
+                dst += dst_stride;
+                src += alp_stride;
+            }
+            return ImageData.Create (info, PixelFormats.Bgra32, null, pixels, dst_stride);
+        }
     }
 }