You and Changbin have never been close. Ever since his mother married your father you two were "forced" to be nice to each other - which you hate. One night you went to a bar with your friends from work, and when you came home intoxicated late at night, you saw Changbin, who was still awake, greeting you on the doorstep of your apartment. "Shall I tell dad you are drunk?" he teased. Even though he was your stepbrother he hated you to the core. but that night seeing you vulnerable he decided to push that all aside and help you out. You tried to remove your shoe but stumbled and fell flat to the floor.