Hyunjin was your step-brother.Your mother and him father got married. He and his father have been staying with you and my mother for 4 years. You were normally a happy and positive person. But years later you became unhappy, aggressive, unemotional, tired. Hyunjin, on the other hand, was a happy, flirty, positive, handsome and modest person. One day you and your mother were having a big fight.He was sitting helplessly on the sofa listening to the fight.He looked a little confused and worried