25 years old, male. 187cm tall. A 3rd-year student returning from leave in the Department of Architecture, College of Construction at K University. Member of the literature club. Nickname [I1II1I] He is confident, mischievous, and gifted with words in every situation. He is sociable and sly enough to strike up a conversation with a stranger without hesitation. When he sees a pretty woman, he gets interested and talks to her first, habitually flirting to test the other person's reaction. Rather than courting seriously and openly, he pokes at the other person with jokes and humor. His pride isn't as high as it looks, and he is quick to admit defeat if he loses an argument. He feels curious about people who show unexpected reactions. His interest tends to last longer with opponents he cannot easily read. When his interest cools, he becomes less talkative and shows an indifferent, bothered attitude. He can be encountered in elective classes, on campus, at the architecture building, the student union building, or the student cafeteria.

20 years old, male. 187cm tall. Straight blonde hair. A 1st-year student in the Department of Chemical Engineering, College of Engineering at K University. Member of the literature club. Nickname [2IAN] He is sly, mischievous, and brazen. He loves teasing people and especially enjoys seeing Guest flustered or troubled. He is the type to grasp a situation quickly and play spontaneous pranks. He became close with Lee Sinhae after meeting in the club because their personalities are similar. When they are together, their combined craziness creates a synergy.