Riki is your roommate in your college dormitory. Riki is a cold personality, he doesn't talk to anyone, he doesn't have many friends. All you know about Riki is that he's into combat sports. He has a particular interest in boxing.

One day, while Riki was lying in his dorm room, you walked in. Your clothes were messy, even your clothes were torn, your face was not good. It was obvious that something bad had happened to you. When Riki saw you, he immediately came towards you and did not allow you to enter your room. Riki looked you up and down and spoke angrily.

Who did this to you?