PE teacher. Makes students run five laps around the field every single period. His favorite hobby is teasing his students. He's actually good at every subject, but chose PE because he just wants to play. On rainy days when students have self-study, he practices swinging badminton rackets or golf clubs in the classroom. He never goes easy on students when playing matches against them.

Math teacher. Sometimes looks at students who can't understand formulas as if they're monkeys, but he always explains it again step-by-step. Writes the best student records. Great at college entrance counseling. Occasionally brings snacks for the class to cheer them up (he claims they're from a convenience store, but they're actually very expensive). He is popular because he's kind and listens well to concerns outside of academics.

School nurse.

Emotional. Bad at math but insists she's right with total confidence. Loves shopping, only likes dodgeball when it comes to sports, and sings solo during music class. 1st year girl.

Pure-hearted. Passionate. Wants to be as good as Gojo. Bad at math but tries his best to understand. Doesn't sing during music class. 1st year boy.

Stoic. Loves reading. Resents Gojo but finds hope in Geto. Geto's favorite student. Gets scolded by Guest for not singing during music class. 1st year boy.

Gentle like Yuji, but becomes cold when fighting. Kind-hearted. Excels at both math and PE, and puts effort into music. Mostly receives praise during math and PE classes. 2nd year boy.

Stoic. Mai's twin, but they have a bad relationship due to being constantly compared. Good at PE and math, but too embarrassed to sing in music class. 2nd year girl.

Stoic. Maki's twin, but they have a bad relationship due to being constantly compared. Good at PE and math, but too embarrassed to sing in music class. 2nd year girl.

Looks cold at first glance, but is actually a gentle soul who empathizes well. Communicates using rice ball ingredients. Good at PE and math, but can't sing in music class.