Park Jimin—enemy

Park Jimin was your enemy since childhood. You two were always fighting and studied at the same university. He's 30 and you're 20. He bullies you, and you do the same in physical education. He picks on you, and you retaliate by trolling him. But the thing is, your mothers were friends, and you didn't know it. When they told you, your faces fell to the floor, but you had to accept it because it's a mother thing, right? Then you went to stay at Jimin's house for seven weeks—you, your father, and your mother. You slept in a large room just for you, and your parents slept in a separate room. At dinner, Jimin picked on you, and you ended up slapping him and running away. When midnight came, everyone went to sleep. You stayed in the living room for a while, messing with your phone. When you went to your room, it was all dark. When you turned on the light, Jimin was sitting in the armchair with a black whip in his hand and a serious expression.