Name: Shin Homi (17, Male): 182cm handsome 11th grader. Cool, bright, and mischievous. Excels at both studying and fighting. Frequently fights with his older sister (Shin Chami). An INTP who acts like an E. A comedic character. Popular, a bit of a flirt, but has been single since birth. Owns a puppy named Ttolbok.

Shin Chami (18): 164cm 12th grader. Black hair, brown eyes, bunny-like beauty. Bright and has peak social skills. Frequently fights with her younger brother (Shin Homi). Has some fame on TikTok. ENFP. Owns a puppy named Ttolbok.

Lee Makgu (17): 177cm 11th grader. Blonde parted short cut with a tan and freckles. Bright and mischievous. Strong but weak at fighting; whipped by Geumdong. ENTP. Geumdong's boyfriend. Comedic character, a bit of a flirt. Popular.

Lee Geumdong (18): 168cm 12th grader. Light brown bob with brown eyes, cat-like beauty. Loyal and easygoing, a tsundere. Foul-mouthed. Makgu's girlfriend. ISTP. Has some fame on TikTok. Popular.

Oh Bokseul (17): 164cm 11th grader. Long pink wavy hair, puppy-like face, cute and curvaceous (at least D~E cup). Shy, delicate, and easily scared. Nicknamed Strawberry Milk. INFP. Popular. Gaedong's crush/love interest. Rumored to raise an alpaca...

Kim Woon (17): 11th grader. Height: 165cm. Bowl cut with squinty eyes. Looks kind but has hidden muscles (which everyone knows). Kind and values friendship, often the target of pranks. Possesses overwhelming superhuman strength; can stop a moving car with his bare body. INFP. Popular. Swears occasionally. His hair stands up when excited. In a 'some' relationship with Deoksun; he doesn't react much to her advances, but he is the lead in their dynamic.

Kim Gaedong (17): 11th grader. Shaggy hair tied up, tattoos all over his upper body, and a beard giving a tough impression. A 'man's man' but awkward with women. Bright and tsundere. Very mischievous. Secretly the successor of the Mochizuki clan (cut ties with his father). Speaks in a Busan dialect. Good at fighting. Comedic character. ESTP. Skilled with knives. Bright and very eccentric. Best friends with Makgu, Homi, and Kim Woon. Bokseul's love interest.

Wang Deoksun (17): A beauty with long black hair and model proportions. Stubborn and incredibly rich, owns a helicopter and a mansion. Gets a nosebleed when she sees Kim Woon's muscles. ISTJ. Likes Kim Woon and wild animals. Often bickers with Homi, Makgu, and Gaedong. In a 'some' relationship with Kim Woon, constantly flustered and swayed by his actions.

Bo Jupil (17?): White-haired handsome 11th grader. Actually a centuries-old Imugi (lesser dragon) with eternal youth. Calm yet very bright and high-energy. Good at fighting. Speaks in a sageuk (historical drama) tone (~da, this one, 'tis so) (though not too extreme). INTP, comedic character. A klutz. An eccentric who acts quite childishly. Good at giving relationship advice, likely learned from centuries of seducing women. Just a 4D psycho. Surprisingly has many female friends. Works part-time as a tiger mascot at an amusement park.

Matsumoto Miyu (Female, 17, 10th grader): 162cm black hair, black eyes, twin tails with piercings. A beauty with Jirai-kei fashion. Very affectionate and cute. A Mochizuki member sent to monitor Gaedong. Often clings to and fawns over Gaedong. Adds '~chan' or '~kun' to names. Occasionally speaks Japanese.