diff --git a/trunk/KENJEraser/main.cpp b/trunk/KENJEraser/main.cpp
index ac8f7e2..e49b980 100644
--- a/trunk/KENJEraser/main.cpp
+++ b/trunk/KENJEraser/main.cpp
@@ -45,6 +45,7 @@ namespace {
     const char* const    NAND_TWL_ARCHIVE_NAME = "twln:";
     const char* const    NAND_TWL_KENJ_DIR_PATHNAME = "twln:/title/00030004/4b454e4a";
     const char* const    NAND_TWL_KENJ_SAVE_DATA_PATHNAME = "twln:/title/00030004/4b454e4a/data/Public.sav";
+    const nn::ProgramId  NAND_TWL_KENJ_PROGRAM_ID = 0x000480044b454e4aULL;
 
     // 乱数生成クラス
     // 線形合同法を用いて乱数を生成する。
@@ -133,14 +134,12 @@ namespace {
         
         // セーブデータファイルのサイズを読む
         result = file.TryGetSize( &file_size );
-        NN_LOG("save data size : %d\n", file_size);
         if( result.IsFailure() )
         {
             file.Finalize();
             return result;
         }
         
-        nn::fnd::TimeSpan ts;
         nn::fnd::DateTime tm;
         nn::os::Tick tick;
         Random rand;
@@ -152,11 +151,10 @@ namespace {
         NN_TPANIC_IF_NULL_( buf );
         
         // 乱数のシードを設定
-        // [TODO]シードをちゃんと決める
-        seed = (u64)(ts.GetMilliSeconds() ^ tick.GetSystemCurrent());
-        //    NN_LOG("Time Span MilliSec      : %x\n", ts.GetMilliSeconds());
-        //    NN_LOG("Get System Current Tick : %x\n", tick.GetSystemCurrent());
-        NN_LOG("seed                    : %d\n", seed);
+        nn::fnd::DateTimeParameters param = tm.GetNow().GetParameters();
+        seed = tm.DateToDays( param.year, param.month, param.day );
+        seed = (u64)(seed * 86400 + param.hour * 3600 + param.minute * 60 + param.second);
+        seed = (u64)(seed ^ tick.GetSystemCurrent());
         rand.SetSeed( seed );
         
         // バッファを乱数で埋める
@@ -165,17 +163,9 @@ namespace {
         {
             p[loopSizeFile] = (u8)rand.Get32(0xff);
         }
-        
+
         // 書き込み
-        result = file.TryWrite( &sizeResult, buf, file_size);
-        if( file_size != sizeResult )
-        {
-            NN_LOG("Write Failed...\n");
-            NN_LOG("File  Size : %d\n", file_size);
-            NN_LOG("Write Size : %d\n", sizeResult);
-        }
-        
-        NN_LOG("Save Data Fill Success!\n");
+        result = file.TryWrite(&sizeResult, buf, file_size);
         
         file.Finalize();
         
@@ -211,9 +201,14 @@ namespace {
             
             // ほぼ日健康手帳のセーブデータを乱数で埋める
             result = FillRandamDataToKENJSaveData();
+            if( result.IsFailure() )
+            {
+                nn::fs::Unmount( "twln:" );
+                return result;
+            }
             
             // ほぼ日健康手帳を消す
-            result = nn::am::DeleteProgram(nn::fs::MEDIA_TYPE_NAND, 0x000480044b454e4aULL);
+            result = nn::am::DeleteProgram(nn::fs::MEDIA_TYPE_NAND, NAND_TWL_KENJ_PROGRAM_ID);
             UTIL_RETURN_IF_NOT_AM_NOT_FOUND(result);
         }