diff --git a/components/Characters/KukeMC.tscn b/components/Characters/KukeMC.tscn
index a47b4ee..a8a7a7d 100644
--- a/components/Characters/KukeMC.tscn
+++ b/components/Characters/KukeMC.tscn
@@ -30,6 +30,9 @@ size = Vector2(150, 150)
 script = ExtResource("2_s2dg5")
 displayName = "酷可mc"
 
+[node name="collect" parent="sounds" index="4"]
+stream = null
+
 [node name="texture" parent="." index="2"]
 sprite_frames = SubResource("SpriteFrames_1c0ui")
 animation = &"walk"
diff --git a/components/Scenes/World.tscn b/components/Scenes/World.tscn
index b4c7235..d3cc97d 100644
--- a/components/Scenes/World.tscn
+++ b/components/Scenes/World.tscn
@@ -103,3 +103,4 @@ shape = SubResource("CircleShape2D_4hkht")
 polygon = PackedVector2Array(-2419, 1803, 2429, 1825, 2392, -366, 2867, -318, 2723, 2241, -2879, 2193, -2797, -2582, 2959, -2528, 2858, -347, 2420, -337, 2441, -1834, -2438, -1792)
 
 [node name="rooster" parent="." groups=["players"] instance=ExtResource("3_5ui6q")]
+currentInvinsible = true
diff --git a/scripts/Contents/Wave.gd b/scripts/Contents/Wave.gd
index 71047a3..fdf9920 100644
--- a/scripts/Contents/Wave.gd
+++ b/scripts/Contents/Wave.gd
@@ -19,8 +19,13 @@ static var WAVE_TESTBOSS = [
 	Wave.create(preload("res://components/Characters/Bear.tscn"), 0, 0, true, 0, INF, 1),
 	Wave.create(preload("res://components/Characters/KukeMC.tscn"), 0, 0, true, 0, INF, 1),
 ]
-static var data = WAVE_TESTBOSS
+static var data = []
 
+static func customStart():
+	var furryr = EntityBase.generate(preload("res://components/Characters/Bear.tscn"), MathTool.randv2_range(500), true, false)
+	var kukemc = EntityBase.generate(preload("res://components/Characters/KukeMC.tscn"), MathTool.randv2_range(500), true, false)
+	furryr.currentFocusedBoss = kukemc
+	kukemc.currentFocusedBoss = furryr
 static func create(
 		entity_: PackedScene,
 		minCount_: int = 1,
@@ -52,5 +57,7 @@ static func spawn():
 		for j in range(entityCountOf(wave)):
 			EntityBase.generate(wave.entity, MathTool.randv2_range(500), true, wave.isBoss)
 static func next():
+	if current == 0:
+		customStart()
 	spawn()
 	current += 1
diff --git a/scripts/Statemachine/BulletBase.gd b/scripts/Statemachine/BulletBase.gd
index 3b02e33..50af601 100644
--- a/scripts/Statemachine/BulletBase.gd
+++ b/scripts/Statemachine/BulletBase.gd
@@ -79,9 +79,10 @@ func _physics_process(_delta: float) -> void:
 func hit(target: Node):
 	var entity: EntityBase = EntityTool.fromHurtbox(target)
 	if !entity || !launcher: return
+	if entity.currentInvinsible: return
 	if !canDamageSelf && entity == launcher: return
 	if !indisDamage && !GameRule.allowFriendlyFire:
-		if entity.isPlayer() == launcher.isPlayer(): return
+		if entity.isPlayer() == launcher.isPlayer() and launcher.currentFocusedBoss != entity: return
 	var damages = entity.takeDamage(self, MathTool.rate(launcher.fields.get(FieldStore.Entity.CRIT_RATE) + GameRule.critRateInfluenceByLuckValue * launcher.fields[FieldStore.Entity.LUCK_VALUE]))
 	succeedToHit(damages)
 	if MathTool.rate(fullPenerate()):
diff --git a/scripts/Statemachine/EntityBase.gd b/scripts/Statemachine/EntityBase.gd
index 7ddc817..5e927e5 100644
--- a/scripts/Statemachine/EntityBase.gd
+++ b/scripts/Statemachine/EntityBase.gd
@@ -73,6 +73,7 @@ var inventoryMax = {
 @export var dropCounts: Array[Vector2] = []
 @export var appleCount: Vector2i = Vector2(0, 2) # 死亡后掉落的苹果数量
 @export var level: int = 1
+@export var currentInvinsible: bool = false
 
 @onready var animatree: AnimationTree = $"%animatree"
 @onready var texture: AnimatedSprite2D = $"%texture"
@@ -127,7 +128,8 @@ func _ready():
 			icon.weapon = i
 			UIState.skillIconContainer.add_child(icon)
 	else:
-		currentFocusedBoss = get_tree().get_nodes_in_group("players")[0]
+		if !currentFocusedBoss:
+			currentFocusedBoss = get_tree().get_nodes_in_group("players")[0]
 		applyLevel()
 	health = fields.get(FieldStore.Entity.MAX_HEALTH)
 	energy = fields.get(FieldStore.Entity.MAX_ENERGY)