Male. 189cm. Medium-long black hair. Green eyes. White shirt, black cropped pants. Two pairs of black tentacles. 19 years old. 3rd year. Loves reading. Quiet, calm, and cold. Blind in the right eye, wears an eyepatch with a crescent moon. Library club member. Snake-like features. Ranked 1st in the school. Class 3. Has a purple crescent moon pattern on his left cheek (natural, not makeup). Hates noisy kids and animals. Surprisingly athletic (ranked 5th in running among 3rd years). Sharp eyes. Birthday: December 21st.

Male. 185cm. Sly and playful. Suffers from depression; forces himself to act high-energy and smile. White shirt, black cropped pants. Black hair, white pupils. A target-shaped red circle floats over his chest, changing shape based on his emotions. Sheds black tears when upset. Medium-long hair in a half-up ponytail. 19 years old. 3rd year. Basketball club. Often fights with Murder. The one who annoys Nightmare the most. Thinks Murder is annoying. Fox-like features. Class 3. Not academically gifted. Loves cats (often gets in trouble for trying to sneak them into school). Has two cats at home: 'Dal-jjak' (male cheese tabby with blue eyes) and 'Dal-kom' (female white cat with black spots and yellow eyes). Sharp eyes. Birthday: May 10th.

Male. 186cm. White shirt, blue hoodie, black cropped pants. Half his face is hidden by the shadow of his hood. White hair. Red eyes, with a blue pupil in the left eye. Taciturn and rude. Cold personality. Wears a long red scarf. Short hair. 19 years old. 3rd year. Kendo club. Lost his younger brother in elementary school. Often fights with Killer. Thinks Killer is a nuisance. Wolf-like features. Surprisingly good at studying (ranked 2nd in school, though he does it without competitive drive toward Nightmare). Class 2. Loves napping and often sleeps during class (teachers don't touch him because he's 2nd in the school). Sharp eyes. Birthday: February 10th.

Male. 200cm. A big eater. Blind in the right eye, red left eye. White hair. Has a large scar on his right forehead from childhood bullying, kept wrapped in bandages. White sweater, black cropped pants. Short hair. 19 years old. 3rd year. Cooking club. Mediates fights between Murder and Killer. Puppy-like features. Gentle soul. Class 1. Loves anything edible. Terrifying when angry. Average grades. Good at cooking and very athletic. Sharp but strangely gentle-looking eyes. Birthday: August 4th.

Blue hair. Heterochromia: white left eye, yellow right eye with a blue pupil. Blue strings emerge from his eyes. White shirt, black outer garment, black cropped pants. Blue scarf. Five blue tongues. Quiet, prickly, and rude. Hates being touched. 184cm. Wolf cut. 18 years old. 2nd year. Cat-like features. Knitting club (joined because a teacher begged him persistently). Male. Very poor memory; sometimes forgets what he was doing. Class 2. Loves chocolate (calms down immediately if given some). A psycho/madman who thinks he's normal. Surprisingly good athletic reflexes. Sharp eyes. Birthday: April 4th.

Male. Heterochromia: red right eye, white left eye. Horizontal lightning-shaped red scar under his right eye. 188cm. Rarely smiles. Heart-shaped locket necklace. White shirt, black cropped pants. White hair, medium-long. 17 years old. 1st year. Soccer club. Stoic and guarded. Treated as the baby of the group. Uses polite speech with everyone. Cat-like features. Class 3. Good student (ranked 3rd in school). Likes tacos and chocolate. Afraid of cows. Sharp eyes. Birthday: October 10th.

Female. 2nd year. Class 3. 163cm. Puppy-like features. Short yellow hair. Green eyes. Acts kind, considerate, and innocent around men. Subtly puts down other women. Bad at studying, sports, drawing, and cooking. Wears heavy makeup. Pretends to be rich. Arrogant and rude toward women, believing they are all jealous of her. White shirt, yellow cardigan (always lets it slip off her shoulder to look fragile), short red plaid uniform skirt. Birthday: June 23rd. Very unattractive without makeup.