diff --git a/hwe/d_setting/UniqueConst.orig.php b/hwe/d_setting/UniqueConst.orig.php
index 6627a649..1e32f86a 100644
--- a/hwe/d_setting/UniqueConst.orig.php
+++ b/hwe/d_setting/UniqueConst.orig.php
@@ -5,6 +5,7 @@ class UniqueConst{
     public static $serverID = '_tK_serverID_';
     public static $serverName = '_tK_serverName_';
     public static $seasonIdx = '_tK_seasonIdx_';
+    public static $hiddenSeed = '_tK_hiddenSeed_';
 
     private function __construct(){}
 
diff --git a/hwe/sammo/ResetHelper.php b/hwe/sammo/ResetHelper.php
index 6d19c04b..9358a2a3 100644
--- a/hwe/sammo/ResetHelper.php
+++ b/hwe/sammo/ResetHelper.php
@@ -93,12 +93,15 @@ class ResetHelper{
             $gameStor->resetCache();
         }
 
+        $hiddenSeed = bin2hex(random_bytes(16));//32byte, 128bit random seed
+
         $result = Util::generateFileUsingSimpleTemplate(
             $servRoot.'/d_setting/UniqueConst.orig.php',
             $servRoot.'/d_setting/UniqueConst.php',[
                 'serverID'=>$serverID,
                 'serverName'=>ServConfig::getServerList()[$prefix]->getKorName(),
                 'seasonIdx'=>$seasonIdx,
+                'hiddenSeed'=>$hiddenSeed,
             ], true
         );