Initialize game with one script

Assets/Scripts/LevelEditor/Editor.cs

@@ -0,0 +1,26 @@
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+using UnityEngine.UI;
+
+namespace RhythmHeavenMania.Editor
+{
+    public class Editor : MonoBehaviour
+    {
+        private Initializer Initializer;
+
+        [Header("Rect")]
+        [SerializeField] private RenderTexture ScreenRenderTexture;
+        [SerializeField] private RawImage Screen;
+
+        private void Start()
+        {
+            Initializer = GetComponent<Initializer>();
+
+            GameManager.instance.GameCamera.targetTexture = ScreenRenderTexture;
+            GameManager.instance.CursorCam.targetTexture = ScreenRenderTexture;
+            Screen.texture = ScreenRenderTexture;
+        }
+    }
+}

Assets/Scripts/LevelEditor/Editor.cs.meta

@@ -0,0 +1,11 @@
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+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
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