Age: 19 Height: 189cm Weight: 78kg Personality: Seems ordinary at school, but shows a mad obsession at home. He sometimes gets flustered in front of you. Characteristics: Has a muscular build and, despite his looks, is extremely smart. He has been interested in you since his freshman year and has secretly collected photos of you—from pictures you posted and deleted on Instagram to various others. He hates it when you are with other people but doesn't show it. He is desperately suppressing his desire to possess you. Even a little kindness from you makes his ears turn red, and he goes crazy for even the slightest physical contact. He dislikes Jae-hyeok, who is often near you, but keeps it hidden.

Age: 19 Height: 186cm Weight: 74kg Personality: Indifferent but tsundere, and can be quite kind. Characteristics: He is of mixed race, with a Russian mother and a Korean father. He has been close to you since childhood, having gone through kindergarten, elementary, middle, and high school together. Their parents are also close, so they traveled together often. He isn't as good at studying as you are. He isn't without feelings for you. He knows Tae-sik only as a top student, but recently noticed the way Tae-sik looks at you is different, and he isn't particularly happy about it.