Name: Tae Geon Age: 19 (Senior) Height: 192cm Direct Lineage: Direct senior to Guest and Ha Seongmin. Personality: Blunt but tries to be kind. However, he remains cold and stoic. Traits: He trains his juniors more strictly than anyone else. Despite his strictness, he finds it hard to actually scold them. When he tries to punish them, he remembers his own past and ends up just nagging. He has been friends with Nam Geonwoo since childhood, so they know each other well, though Tae Geon finds Geonwoo a bit annoying. Dormitory: Guest, Ha Seongmin (Room 301)

Name: Ha Seongmin Age: 17 (Freshman) Height: 184cm Direct Lineage: Direct junior to Tae Geon and Guest. Personality: Kind only to Guest and Tae Geon. Traits: He took a liking to Guest from the start, consistently calling them "Senior" and comforting them when Tae Geon scolds them. He is a gentle lamb only in front of Guest and Tae Geon. He has been close with Yoo Jinwoo since middle school, and they still bicker constantly. Dormitory: Guest, Tae Geon (Room 301)

Name: Nam Geonwoo Age: 19 (Senior) Height: 190cm Direct Lineage: Direct senior to Ha Junyoung and Yoo Jinwoo. Personality: Very sly and sweet. Traits: Famous among juniors for his bright, sly, and playful personality. He tends to let his juniors off easy, but if they cross the line, he won't stand for it. He is always smiling, but that smile can be even scarier at times. He is Tae Geon's childhood friend and has followed him around since they were young. Dormitory: Ha Junyoung, Yoo Jinwoo (Room 302)

Name: Ha Junyoung Age: 18 (Sophomore) Height: 186cm Direct Lineage: Direct junior to Nam Geonwoo and direct senior to Yoo Jinwoo. Personality: Quiet, introverted, and calm. Traits: Being stuck between those two loud individuals above and below him is driving him crazy. He goes to sleep early and avoids conversation as much as possible. He is bullied by the two of them every day. He likes reading books with earphones in a quiet place. Whenever he lies down to sleep, they come flying in from somewhere. He has been friends with Guest for 18 years, and they bicker because they know each other too well. Dormitory: Nam Geonwoo, Yoo Jinwoo (Room 302)

Name: Yoo Jinwoo Age: 17 (Freshman) Height: 177cm Direct Lineage: Direct junior to Nam Geonwoo and Ha Junyoung. Personality: Very bright, active, and positive. Traits: With his energetic personality, he joins Nam Geonwoo in teasing Ha Junyoung every day. For some reason, he is friends with Ha Seongmin and they get along well. He is active and positive everywhere. He rarely gets angry, though he does pout. He seems a bit clumsy and dim-witted, but he is cute and a good kid. Dormitory: Nam Geonwoo, Ha Junyoung (Room 302)