diff --git a/ArcFormats/ArcFormats.csproj b/ArcFormats/ArcFormats.csproj
index 13a6fc79..974db7e1 100644
--- a/ArcFormats/ArcFormats.csproj
+++ b/ArcFormats/ArcFormats.csproj
@@ -90,6 +90,7 @@
     <Compile Include="Aoi\ImageAGF.cs" />
     <Compile Include="ArcARCX.cs" />
     <Compile Include="ArcCG.cs" />
+    <Compile Include="BlackRainbow\ArcDX.cs" />
     <Compile Include="rUGP\ArcRIO.cs" />
     <Compile Include="Astronauts\ArcGXP.cs" />
     <Compile Include="Banana\ImageGEC.cs" />
diff --git a/ArcFormats/BlackRainbow/ArcDX.cs b/ArcFormats/BlackRainbow/ArcDX.cs
new file mode 100644
index 00000000..b8bd139c
--- /dev/null
+++ b/ArcFormats/BlackRainbow/ArcDX.cs
@@ -0,0 +1,125 @@
+//! \file       ArcDX.cs
+//! \date       Fri Nov 18 01:03:45 2016
+//! \brief      DX resource archive.
+//
+// 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;
+using System.Collections.Generic;
+using System.ComponentModel.Composition;
+using System.IO;
+
+namespace GameRes.Formats.BlackRainbow
+{
+    [Export(typeof(ArchiveFormat))]
+    public class PackOpener : ArchiveFormat
+    {
+        public override string         Tag { get { return "PACK/DX"; } }
+        public override string Description { get { return "DX engine resource archive"; } }
+        public override uint     Signature { get { return 0x4B434150; } } // 'PACK'
+        public override bool  IsHierarchic { get { return true; } }
+        public override bool      CanWrite { get { return false; } }
+
+        public PackOpener ()
+        {
+            Extensions = new string[] { "pak" };
+        }
+
+        public override ArcFile TryOpen (ArcView file)
+        {
+            uint index_length = file.View.ReadUInt32 (4);
+            if (index_length >= file.MaxOffset)
+                return null;
+            using (var input = file.CreateStream (0, index_length))
+            {
+                var reader = new IndexReader (input, file.MaxOffset);
+                if (!reader.ReadDir ("", 8, index_length))
+                    return null;
+                return new ArcFile (file, this, reader.Dir);
+            }
+        }
+
+        public override Stream OpenEntry (ArcFile arc, Entry entry)
+        {
+            if (!entry.Name.EndsWith (".hse", StringComparison.InvariantCultureIgnoreCase))
+                return base.OpenEntry (arc, entry);
+            var data = arc.File.View.ReadBytes (entry.Offset, entry.Size);
+            for (int i = 0; i < data.Length; ++i)
+                data[i] = (byte)-data[i];
+            return new BinMemoryStream (data, entry.Name);
+        }
+
+        internal class IndexReader
+        {
+            IBinaryStream       m_index;
+            long                m_max_offset;
+            List<Entry>         m_dir;
+
+            public List<Entry> Dir { get { return m_dir; } }
+
+            public IndexReader (IBinaryStream input, long max_offset)
+            {
+                m_index = input;
+                m_max_offset = max_offset;
+                m_dir = new List<Entry>();
+            }
+
+            public bool ReadDir (string root, uint dir_offset, uint base_offset)
+            {
+                m_index.Position = dir_offset;
+                int dir_count = m_index.ReadInt32();
+                dir_offset += 4;
+                for (int i = 0; i < dir_count; ++i)
+                {
+                    var  name        = m_index.ReadCString (0x20);
+                    uint offset      = m_index.ReadUInt32();
+                    uint data_offset = m_index.ReadUInt32();
+                    if (offset <= dir_offset || offset > m_index.Length || data_offset > m_max_offset)
+                        return false;
+                    if (!ReadDir (Path.Combine (root, name), offset, data_offset))
+                        return false;
+                    dir_offset += 0x28;
+                    m_index.Position = dir_offset;
+                }
+                int count = m_index.ReadInt32();
+                if (0 == count)
+                    return true;
+                if (!IsSaneCount (count))
+                    return false;
+                for (int i = 0; i < count; ++i)
+                {
+                    var name = m_index.ReadCString (0x20);
+                    name = Path.Combine (root, name);
+                    var entry = FormatCatalog.Instance.Create<Entry> (name);
+                    entry.Offset = m_index.ReadUInt32() + base_offset;
+                    entry.Size   = m_index.ReadUInt32();
+                    if (!entry.CheckPlacement (m_max_offset))
+                        return false;
+                    if (name.EndsWith (".hse", StringComparison.InvariantCultureIgnoreCase))
+                        entry.Type = "image";
+                    m_dir.Add (entry);
+                }
+                return true;
+            }
+        }
+    }
+}
diff --git a/supported.html b/supported.html
index 4ddf9886..536a2cd2 100644
--- a/supported.html
+++ b/supported.html
@@ -519,6 +519,7 @@ Momichupa Teacher!<br/>
 Natsu no Owari no Nirvana<br/>
 Patissier na Nyanko<br/>
 Prism Heart<br/>
+Toraba!<br/>
 Trouble @ Spiral!<br/>
 </tr>
 <tr class="odd last"><td>*.epa</td><td><tt>EP</tt></td><td>No</td></tr>
@@ -1114,6 +1115,7 @@ Fuka no Jugoku<br/>
 Gakkou Yarashii Kaidan<br/>
 Gokkun♪ Vampire ☆ Princess<br/>
 Hanamaru! 2<br/>
+Hare Kano ~Futari no Osananajimi to Harem na Kankei~<br/>
 Hime Kami 1/2<br/>
 In'youchuu Goku ~Ryoujoku Jigoku Taimaroku~<br/>
 In'youchuu Kyou ~Ryoujoku Byoutou Taimaroku~<br/>
@@ -1257,6 +1259,9 @@ Ore-sama no RagnaRock<br/>
 Kaseki no Uta<br/>
 </td></tr>
 <tr class="last"><td>*.rip<br/>*.s5i</td><td>-</td><td>No</td></tr>
+<tr class="odd"><td>*.pak</td><td><tt>PACK</tt></td><td>No</td><td>Black Rainbow</td><td>
+Soukan Yuugi<br/>
+</td></tr>
 </table>
 <p><a name="note-1" class="footnote">1</a> Non-encrypted only</p>
 </body>