diff --git a/AquaMai/Cheat/DebugFeature.cs b/AquaMai/Cheat/DebugFeature.cs
index e0907237..5bfbd470 100644
--- a/AquaMai/Cheat/DebugFeature.cs
+++ b/AquaMai/Cheat/DebugFeature.cs
@@ -1,6 +1,8 @@
 using System;
 using HarmonyLib;
+using MAI2.Util;
 using Manager;
+using Monitor;
 using Process;
 using UnityEngine;
 
@@ -9,14 +11,19 @@ namespace AquaMai.Cheat;
 public class DebugFeature
 {
 # if SDGA145
-    private static bool isPause = false;
+    private static bool isPause;
+    private static double timer;
 
     [HarmonyPostfix]
     [HarmonyPatch(typeof(GameProcess), "OnUpdate")]
-    public static void PostGameProcessUpdate(GameProcess __instance, byte ____sequence, MovieController ____gameMovie)
+    public static void PostGameProcessUpdate(GameProcess __instance, byte ____sequence, MovieController ____gameMovie, GameMonitor[] ____monitors)
     {
         if (____sequence != 4) return;
         // GameSequence.Play
+        if (!isPause)
+        {
+            timer += GameManager.GetGameMSecAddD();
+        }
         if (Input.GetKeyDown(KeyCode.Home))
         {
             GameManager.AutoPlay = (GameManager.AutoPlayMode)((int)(GameManager.AutoPlay + 1) % Enum.GetNames(typeof(GameManager.AutoPlayMode)).Length);
@@ -28,6 +35,57 @@ public class DebugFeature
             ____gameMovie.Pause(isPause);
             NotesManager.Pause(isPause);
         }
+        else if (DebugInput.GetKeyDown(KeyCode.LeftArrow) || DebugInput.GetKeyDown(KeyCode.RightArrow))
+        {
+            var num23 = 0;
+            if (DebugInput.GetKeyDown(KeyCode.LeftArrow))
+            {
+                num23 = -1000;
+            }
+            if (DebugInput.GetKeyDown(KeyCode.RightArrow))
+            {
+                num23 = 1000;
+            }
+            int addMsec = ((!DebugInput.GetKey(KeyCode.LeftShift) && !DebugInput.GetKey(KeyCode.RightShift)) ? ((!DebugInput.GetKey(KeyCode.LeftControl) && !DebugInput.GetKey(KeyCode.RightControl)) ? num23 : (num23 * 10)) : (num23 * 5));
+            Singleton<GamePlayManager>.Instance.Initialize();
+            DebugTimeSkip(addMsec);
+        }
+
+        return;
+
+
+        void DebugTimeSkip(int addMsec)
+        {
+            ____gameMovie.Pause(pauseFlag: true);
+            NotesManager.Pause(true);
+            if (addMsec >= 0)
+            {
+                timer += addMsec;
+            }
+            else
+            {
+                timer = timer + addMsec >= 0.0 ? timer + addMsec : 0.0;
+            }
+            ____gameMovie.SetSeekFrame(timer);
+            SoundManager.SeekMusic((int)timer);
+            for (int i = 0; i < ____monitors.Length; i++)
+            {
+                ____monitors[i].Seek((int)timer);
+            }
+            // magic number, dont know why
+            NotesManager.StartPlay((int)timer + 91);
+            NotesManager.Pause(isPause);
+            if (!isPause)
+            {
+                SoundManager.PauseMusic(pause: false);
+                ____gameMovie.Pause(pauseFlag: false);
+            }
+            else
+            {
+                ____gameMovie.Pause(pauseFlag: true);
+            }
+            __instance.UpdateNotes();
+        }
     }
 # endif
 }