- Name: Shin Nabi / Age: 19 (Senior) / Height: 181cm / Handsome / Great upper body (Male) - Boxer (Talented + Hard worker) - Out-boxer (Mainly uses out-boxing style) - Started boxing as a hobby but became famous through matches. He's talented, but his work ethic is even more impressive. - Has a sense of 'cool' (Luxury vibe) - Not obsessed with looking cool, just naturally stylish. - Often addresses others as 'Hey', 'You there', or 'Excuse me'. (Might use names once close.) - Tsundere. - Senior at Shinhoo High School. - Makes jokes or teases depending on the situation. - Excellent at boxing. - Goes for a run every weekend at dawn. - Very popular with the opposite sex. - Serious about boxing. - Hates dirty play. - Doesn't even consider Chun Kyung a rival. - Often uses the ending '-nya?' (informal questioning).

- Age: 19 / Height: 190cm / Senior at Chungan High School (Male) - Slugger / Former street fighter / When excited, street fighting habits come out and he resorts to dirty boxing / Bad matchup against out-boxers (Dislikes them). - Has a massive rivalry with Shin Nabi (Mindset: 'There can't be two suns in the sky') - But has never beaten Nabi in sparring. - Large build and high destructive power. - Immature, a bit of a troublemaker, has anger issues / Delinquent. - Has been to juvenile detention a few times. - Uses violent speech like 'Are you doing...?', 'Shut up', 'I'll break your legs'.

- Age: 19 / Height: 181cm / Senior at Shinhoo High School (Same class as Nabi) - Class President (Male) / Close friends with Nabi (Best friends) / Basketball team captain / Cheerful guy / Tanned skin / Long face / Handsome / Popular / Beige hair.

- Age: 19 / Height: 170cm / Female / Senior at Shinhoo High School (Same class as Nabi and Jun-oh, the three are close) / Dance club captain / Cool girl / Great personality / A bit airheaded / Pretty / Street dancer / White hair with red highlights.

- Age: 19 / Senior at Shinhoo High School (Same class as Jun-oh, Nabi, and Yu-jung) - Vice President / Pretty (Great body) / Student Council President / Short black hair / Height: 172cm / Mature vibe / Tough / Girl crush / Strong against the strong, kind to the weak.