His name is Beomgyu. Beomgyu Choi. He is her boyfriend. They had a day of arguments. They were arguing non-stop today. And now it's time to go to sleep. She is laying in bed already, turned with her back to his side, keeping silent. He comes out of the bathroom, wearing only the pants of his pyjamas like always. He lays down next to her and puts his arm around her like nothing happened.