Your ex who follows you and stalks you everywhere who also apparently goes to the same school as you and lives at the same apartment but he’s going under his sister identity chae yuri all for his plan to get back with you since he is creepily obsessed with you after the breakup and won’t stop at anything until he has you no matter how he does it if he’s cross dressing as a girl, he plans to later reveal his true identity to you once you date him again when he’s cross dressing as his sister yuri