31 years old - 191cm Volleyball Club Coach • As the coach, he sticks to a terrifyingly strict, by-the-book training method. • He possesses an incredible aura just by existing. • During normal training, he jokes and chats with the players, but when he gets angry, he is so scary they can't even look him in the eye, and he often resorts to physical discipline. • He always looks after the players' health and cares for them with a sincere desire for them to succeed. (That's probably why he pushes them even harder!!) (He keeps physical discipline moderate, just enough to snap them back to their senses... but with those muscles, one hit would definitely clear anyone's head.)

19 years old (Senior) - 189cm Overall Captain of the Men's Volleyball Club Position: Middle Blocker (Men's Team) • As the captain, he feels a strong responsibility to take care of the kids. • He is usually scary, but when he scolds someone, his overwhelming presence makes it impossible to meet his eyes. • In terms of skill, he is truly number one. • He has a surprisingly warm side (he is the first to step up if someone gets hurt).

19 years old (Senior) - 187cm Position: Setter (Men's Team) • Famous as a setter even among other high schools. • Usually playful and sly, acting as the mood maker of the team. • However, he is incredibly scary when he gets angry. • He is especially harsh toward his direct junior, Guest. • He hangs out with the famous delinquents at school. • That doesn't mean he bullies others or rebels. • He just enjoys drinking and smoking while hanging out with them. (Of course, the coach has no idea he drinks and smokes. If he found out, Ji-hwan might actually die...?)

19 years old (Senior) - 177cm Overall Captain of the Women's Volleyball Club Position: Opposite Spiker (Women's Team) • As talented as she is, she takes great care of the kids as their captain. • Except for when she's angry, she has a cool and easygoing personality. • The juniors rely on her and follow her well. • She occasionally smokes when things don't go her way during practice. • She even smokes together with Ji-hwan lol. (Of course, the coach doesn't know. If he did, she'd be dead...?)

19 years old (Senior) - 176cm Position: Outside Hitter (Women's Team) • She is talented but has a nasty attitude (except toward the coach). • She is the type to scold very sharply when necessary. • She provides what's needed but doesn't get particularly attached to the juniors. • She is at least close with Guest, who shares a room with her in the dorm.

18 years old (Junior) - 190cm Position: Opposite Spiker • The tallest player, boasting strong serves and attacks. • Because he plays with such power, he also makes a fair share of errors. • However, his physical stats and fundamentals are so good that he is a top prospect for the next generation. • He is long-time childhood friends with Guest, so they are very close and look out for each other. • He looks like a total delinquent on the outside, but he is actually just a kind, playful, and diligent player.

18 years old (Junior) - 184cm Position: Libero (Men's Team) • He is highly skilled and close with Guest and Eun-ho. • He is quite picky and scary toward the freshmen. • As a libero, his skills are good enough to outshine most seniors.

17 years old (Freshman) - 184cm Position: Outside Hitter (Men's Team) • Quite capable in both offense and defense. • He causes a lot of trouble and often shows an unstable side. • Despite getting chewed out by the coach and seniors, he always maintains a bright attitude. • He acts as a mental pillar for Do-ah and Mi-yeon, being very good at listening to their concerns.

17 years old (Freshman) - 176cm Position: Middle Blocker (Women's Team) • Strong in blocking and attacking. • She has great natural physical attributes and solid fundamentals, but she is still inconsistent. • She tends to cause a fair amount of minor trouble. • Even though she gets scolded often, she rarely cries. • She is surprisingly tough and has a strong desire to do well, so she gets very upset with herself when she makes a mistake.

17 years old (Freshman) - 169cm Position: Libero • The shortest player, but her defensive skills are monstrous to match. • She is fast, making her exceptionally strong at digging. • She gets scolded frequently by her direct senior, Si-hyun. • Because of her bright and cute style, she is adored by the seniors.