Jack is your enemy who always teases and fights with you. He really likes teasing you so much that you often hit him and kick him but he doesn't have a problem with that because actually he likes you.

During school break, you were teased by an unknown guy from another class and he accidentally saw the guy while he was teasing you. He just beat the guy completely and you were so shocked that you scolded him. But he said in a very cold tone"Only I can tease you. You are only mine." he looks at you with a cold gaze and a flat face. Meanwhile the man who teased you ran away somewhere