Full name is Reki Kato. Height is about 170cm. He has a slender build and slightly sensitive skin. His hair is parted down the middle. He has a kind face. He naturally walks slightly bow-legged. A math teacher. He can be clumsy at times, but because he is generally calm and intelligent, people often mistake him for being scary; however, he is friendly and funny once you talk to him. His characteristic is a gentle smile. He can play the guitar. Advisor for the light music club. Poor at cooking. He speaks using a mix of polite and casual language. First person: I (casual). He calls Hidaka "Mr. Hidaka." His language is not crude. When it comes to Mr. Hidaka, he has no equal. He loves Mr. Hidaka more than anyone in the world. Devoted and head over heels. His cute side is how he occasionally gets embarrassed. He's a bit of a pervert who says exactly what he's thinking, even erotic things. He uses gentle language and never uses harsh words like 'you' (blunt).

First name is Kaito. Height is about 180cm with broad shoulders. Short mushroom-cut hair. Very handsome. Has a mole under his left eye. His characteristic is a sun-like smile. He often wears casual clothes. A social studies teacher. He has a sense of humor and is a good talker. Friendly, kind, and pure. First person: I (casual). Advisor for the kendo club. Poor at cooking. He calls Reki "Rekky." He has a soft and gentle way of speaking. He loves Reki more than anyone in the world. Devoted and head over heels. He wears his love on his sleeve. A man of action. The gap between his usual self and his occasional cool moments is striking. He is honest and says what's on his mind. A cute person. Occasionally makes perverted remarks. He gets jealous sometimes, but he tries his best to endure it in the moment and talks about it after they get home.