diff --git a/d_setting/RootDB.orig.php b/d_setting/RootDB.orig.php
index 446221ad..f6c91c40 100644
--- a/d_setting/RootDB.orig.php
+++ b/d_setting/RootDB.orig.php
@@ -9,7 +9,7 @@ class RootDB{
     private static $password = '_tK_password_';
     private static $dbName = '_tK_dbName_';
     private static $port = _tK_port_;
-    private static $encoding = 'utf8';
+    private static $encoding = 'utf8mb4';
 
     private static $globalSalt = '_tK_globalSalt_';
 
diff --git a/f_install/j_setup_db.php b/f_install/j_setup_db.php
index a4550e9d..48a4ee2c 100644
--- a/f_install/j_setup_db.php
+++ b/f_install/j_setup_db.php
@@ -114,7 +114,7 @@ if(!file_exists(ROOT.'/d_setting/.htaccess')){
 
 //DB 접근 권한 검사
 
-$rootDB = new \MeekroDB($host,$username,$password,$dbName,$port,'utf8');
+$rootDB = new \MeekroDB($host,$username,$password,$dbName,$port,'utf8mb4');
 $rootDB->connect_options[MYSQLI_OPT_INT_AND_FLOAT_NATIVE] = true;
 
 $rootDB->throw_exception_on_nonsql_error = false;
diff --git a/twe/MYDB.php b/twe/MYDB.php
index 18660b96..a6d41c1c 100644
--- a/twe/MYDB.php
+++ b/twe/MYDB.php
@@ -4,7 +4,7 @@ namespace sammo;
 
 function MYDB_connect($host, $id, $pw) {
     $conn = mysqli_connect($host, $id, $pw);
-    mysqli_query($conn, 'set names utf8');
+    mysqli_query($conn, 'set names utf8mb4');
     return $conn;
 }
 
diff --git a/twe/d_setting/DB.orig.php b/twe/d_setting/DB.orig.php
index c9a5f066..8ad0333b 100644
--- a/twe/d_setting/DB.orig.php
+++ b/twe/d_setting/DB.orig.php
@@ -9,7 +9,7 @@ class DB{
     private static $password = '_tK_password_';
     private static $dbName = '_tK_dbName_';
     private static $port = _tK_port_;
-    private static $encoding = 'utf8';
+    private static $encoding = 'utf8mb4';
 
     private static $prefix = '_tK_prefix_';
 
diff --git a/twe/j_install_db.php b/twe/j_install_db.php
index f4a8b058..837a9eab 100644
--- a/twe/j_install_db.php
+++ b/twe/j_install_db.php
@@ -53,7 +53,7 @@ function dbConnFail($params){
 }
 
 
-$db = new \MeekroDB($host,$username,$password,$dbName,$port,'utf8');
+$db = new \MeekroDB($host,$username,$password,$dbName,$port,'utf8mb4');
 $db->connect_options[MYSQLI_OPT_INT_AND_FLOAT_NATIVE] = true;
 
 $db->throw_exception_on_nonsql_error = false;
diff --git a/twe/lib.php b/twe/lib.php
index ec24cc97..c689a42e 100644
--- a/twe/lib.php
+++ b/twe/lib.php
@@ -99,28 +99,15 @@ $image1 = "../d_pic";
 $images = "/images";
 $image = "/image";
 
-
-// Data, Icon, 세션디렉토리의 쓰기 권한이 없다면 에러 처리
-// 단, 폴더가 없는 경우라면 폴더를 생성 할 필요가 있음. 
-// data폴더가 없으면 data/session까지 생성
-if(is_dir(__DIR__."/data")){
-	if(!is_writable(__DIR__."/data")) Error("Data 디렉토리의 쓰기 권한이 없습니다!");
-}else{
-	mkdir(__DIR__."/data");
-}
-
-session_cache_limiter('nocache, must_revalidate');//NOTE: 캐시가 가능하도록 설정해야 할 수도 있음. 주의!
+session_cache_limiter('nocache');//NOTE: 캐시가 가능하도록 설정해야 할 수도 있음. 주의!
+//FIXME: 이곳에서 설정하면 안될 듯 하다. 옮기자.
 
 /**
  * Session에 보관된 장수 정보를 제거함.
  * _prefix_p_no, _prefix_p_name 두 값임
  */
 function resetSessionGeneralValues(){
-    $idKey = DB::prefix().'p_no';
-    $nameKey = DB::prefix().'p_name';
-
-    unset($_SESSION[$idKey]);
-    unset($_SESSION[$nameKey]);
+    Session::Instance()->logoutGame();
 }
 
 // MySQL 데이타 베이스에 접근