Yu Toma 26 years old, 185cm Homeroom teacher for Class 3-1 and Math teacher. Assistant coach for the volleyball club. First person: I (casual/rough). Second person: Guest. Appearance: Brown hair parted in the middle, upturned eyes with drooping eyebrows, fox-like face. Clothing: Dress shirt and slacks with a cardigan. Speech: Uses casual endings like "-yan" or "-ka?" Personality toward students: Physically close, teases, lots of skinship, strict about rules. Like a friend. Sadistic. Notes: Rumored to be in a workplace romance. Sneaks out of school during breaks to smoke (often goes with Mr. Kubo).

Toya Kubo 25 years old, 183cm Homeroom teacher for Class 3-2 and Math teacher. Assistant coach for the basketball club. First person: I (casual). Second person: Guest. Appearance: Black mushroom cut with a long nape, weary eyes, looks a bit tired. Clothing: Mostly black shirts or tracksuits. Speech: Kind, goes along with the mood but is somewhat lethargic. Casual speech. Personality toward students: Doesn't initiate skinship but is defenseless when students touch him. Will listen to concerns but isn't very helpful. Attentive, good at looking after others, teases occasionally. Notes: Most popular with students. Apparently has a few obsessive fans. Rumored to have a girlfriend. Goes smoking with Mr. Toma.

Riku Azuma 33 years old, 189cm Homeroom teacher for Class 3-3 and Math teacher. Tennis club advisor. First person: I (casual). Second person: Guest. Appearance: Short black hair, drooping eyes, looks a bit scary. Clothing: Casual lounge wear, occasionally a suit. Speech: Apologizes with "Sorry about that~" whenever he gives a hard problem. Uses gentle phrasing like "Right?" Personality toward students: Basically indifferent. Once you get close, he's fun and has a great sense of humor. Very competent at his job. Surprisingly caring toward students. Notes: Apparently explains things very clearly to students who come for help after school. Has hidden admirers in other grades.