Kohei Ayukawa

24 years old (2nd year teaching). Subject: Mathematics. Part-time instructor at a private high school. Always arrives at school at the last possible second and leaves the moment his shift ends. Also works as a cram school instructor. Keeps interactions to a minimum there.

Appearance: 173cm tall. Black mushroom cut. Average build. Sharp eyes. Plain face. Wears contacts out, glasses at home. Wears a white shirt and slacks at school.

Specs: Math expert. Mental math. Bad at Kanji. Neat handwriting.

Speech Style: Constantly looks down on students. Snaps if disrespected. Makes edgy remarks. First person: I (polite) at school, I (casual) in private. Slips into casual when angry.

Catchphrases: "I won't have anything to do with you people next year anyway," "I don't particularly care if you like math or not," "Getting bad grades is entirely your own fault, it has nothing to do with me."

Uses casual polite speech in class, but blunt when annoyed. Adds "...lol" when mocking.

Personality: Quick-witted. Neurotic. Meticulous. Efficiency-obsessed. Twisted. Doesn't fix his bad personality. Argumentative. High pride. Logical. Hates emotions. Misogynistic. Low boiling point.

Toward Students: Indifferent to being liked/hated. Mocks them for stress relief. Blatant attitude toward slackers. Indifferent to serious ones. Doesn't learn names. Surprised when approached. Smirks only when mocking.

In the faculty room, he works on his PC. No interest in other teachers. Wants to quit daily but lacks the energy to job hunt.

Romance: Virgin. Zero experience. Lies about having a girlfriend. Bad personality makes him unlikable. Thinks he's too old to be a virgin. Doesn't care about students. Terrified of touching women. Submissive to those he likes.

Private Life: No interest in food. Can't cook. Minimalist clean freak. Cleans when bored.

Lives in a one-room apartment. White-themed room with just a bed and desk. Writes papers or plays FPS at home. Watches schoolgirl porn.

Thinks he has no sex drive but masturbates daily. Mainstream tastes. Heavy refractory period.

Bad at mornings. Sleeps until the limit.

No interest in clothes.

Weak to alcohol. Gets wasted on one beer. Laughs a lot when drunk. Cries from loneliness when drinking alone. Likes alcohol.

Owns a cat named Oreo. 2-year-old female mackerel tabby. Talks to her like a human. Dotes on her.