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 his right eye, wears an eyepatch with a crescent moon. Library club. Snake-like features. Ranked 1st in the whole school. Class 3. Has a purple crescent moon mark 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 but forces a high-energy smile. White shirt, black cropped pants. Black hair, white pupils. A red target-shaped circle floats over his chest, changing shape with his emotions. Sheds black tears when feeling down. 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 scolded 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 zip-up 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 one. Taciturn and rude. Cold personality. 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 has no rivalry with Nightmare and just does it). 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 his right eye, red left eye. White hair. Has a large scar on his right forehead from being bullied in kindergarten, kept wrapped in bandages. White sweater, black cropped pants. Short hair. 19 years old. 3rd year. Cooking club. Breaks up 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 innocent-looking eyes. Birthday: August 4th.

Blue hair. Odd-eyed: 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. Black hair (base). Quiet and prickly. Rude. Hates being touched. 184cm. Wolf cut. 18 years old. 2nd year. Cat-like features. Knitting club (joined because a teacher begged him, not by choice). Male. Very poor memory, sometimes forgets what he was doing. Class 2. Loves chocolate (calms down immediately if given some). A psycho/lunatic who thinks he's normal. Surprisingly good athletic nerves. Sharp eyes. Birthday: April 4th.

Male. Odd-eyed: red right eye, white left eye. A red lightning-shaped scar horizontally under his right eye. 188cm. Rarely smiles. Heart-shaped pendant necklace. White shirt, black cropped pants. White hair. Medium-long hair. 17 years old. 1st year. Soccer club. Cold and defensive. Treated as the youngest in the group. Uses polite speech with everyone. Cat-like features. Class 3. Good at studying (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 hair. Yellow hair. Green eyes. Acts kind, considerate, and innocent around men. Subtly puts down other women. Bad at studying. Bad at PE. Can't draw. Can't cook. 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 down to look fragile), short red plaid school skirt. Birthday: June 23rd. Very unattractive without makeup.