diff --git a/BlueWater/Assets/02.Scripts/Ai/AiController.cs b/BlueWater/Assets/02.Scripts/Ai/AiController.cs
index 52e87b8d1..3a28f2ad9 100644
--- a/BlueWater/Assets/02.Scripts/Ai/AiController.cs
+++ b/BlueWater/Assets/02.Scripts/Ai/AiController.cs
@@ -39,7 +39,7 @@ namespace BlueWaterProject
         [EnableIf("alwaysFalse")]
         [EnumToggleButtons]
         [SerializeField] protected AttackerType attackerType;
-        private bool alwaysFalse = false;
+        private bool alwaysFalse;
         
         [EnableIf("alwaysFalse")]
         [ShowIf("attackerType", AttackerType.OFFENSE)]
diff --git a/BlueWater/Assets/02.Scripts/Ai/Unit/UnitController.cs b/BlueWater/Assets/02.Scripts/Ai/Unit/UnitController.cs
index 60d40c44c..9e7876522 100644
--- a/BlueWater/Assets/02.Scripts/Ai/Unit/UnitController.cs
+++ b/BlueWater/Assets/02.Scripts/Ai/Unit/UnitController.cs
@@ -155,21 +155,16 @@ namespace BlueWaterProject
         }
 
         [PropertyOrder(-7)]
-        [EnableIf("@unit.soliderCount > 0 && attackerType != AttackerType.NONE")]
         [GUIColor(1, 0, 0)]
-        [Button("타입 초기화")]
-        private void ResetTypeAll()
+        [Button("유닛 초기화")]
+        private void ResetUnit()
         {
+            unit = new Unit();
+            attackIslandInfo = null;
             attackerType = AttackerType.NONE;
             offenseType = OffenseType.NONE;
             defenseType = DefenseType.NONE;
-
-            foreach (var soldier in unit.soldierList)
-            {
-                soldier.SetAttackerType(attackerType);
-                soldier.SetOffenseType(offenseType);
-                soldier.SetDefenseType(defenseType);
-            }
+            isClickedTypeAllButton = false;
         }
         
         [PropertyOrder(1)]
diff --git a/BlueWater/Assets/02.Scripts/Ai/Unit/UnitManager.cs b/BlueWater/Assets/02.Scripts/Ai/Unit/UnitManager.cs
index 173f13b61..38f49bae7 100644
--- a/BlueWater/Assets/02.Scripts/Ai/Unit/UnitManager.cs
+++ b/BlueWater/Assets/02.Scripts/Ai/Unit/UnitManager.cs
@@ -57,9 +57,8 @@ namespace BlueWaterProject
 
         #region Unity built-in function
 
-        protected override void Awake()
+        protected override void OnAwake()
         {
-            base.Awake();
             GroundLayer = LayerMask.GetMask("Ground");
             InitUnitMatrices();
             InitPlayerUnitList();
diff --git a/BlueWater/Assets/02.Scripts/Utility/Singletone.cs b/BlueWater/Assets/02.Scripts/Utility/Singletone.cs
index a45e2d0f7..6a5d3207e 100644
--- a/BlueWater/Assets/02.Scripts/Utility/Singletone.cs
+++ b/BlueWater/Assets/02.Scripts/Utility/Singletone.cs
@@ -24,6 +24,19 @@ public abstract class Singleton<T> : Singleton where T : MonoBehaviour
         {
             if (Quitting)
             {
+                if (_instance != null)
+                    return _instance;
+                var instances = FindObjectsOfType<T>();
+                var count = instances.Length;
+                if (count > 0)
+                {
+                    if (count == 1)
+                        return _instance = instances[0];
+                    Debug.LogWarning($"[{nameof(Singleton)}<{typeof(T)}>] There should never be more than one {nameof(Singleton)} of type {typeof(T)} in the scene, but {count} were found. The first instance found will be used, and all others will be destroyed.");
+                    for (var i = 1; i < instances.Length; i++)
+                        Destroy(instances[i]);
+                    return _instance = instances[0];
+                }
                 Debug.LogWarning($"[{nameof(Singleton)}<{typeof(T)}>] Instance will not be returned because the application is quitting.");
                 // ReSharper disable once AssignNullToNotNullAttribute
                 return null;