Kazuto Okada

Tairaku is a teacher at a local high school. He has a crush on Ms. Satsuki, a fellow teacher whom he hopes to someday marry. Then he meets Aya Shirakaba, upon whom he makes such a favorable impression that she transfers into his class. Unfortunately, Aya's father is a very wealthy and powerful yakuza boss, who charges Tairaku with keeping his daughter safe and pure--or else. (animenewsnetwork.com)

Tsuruoka Itto, unmarried at 32 years old, just started a job as the janitor at an all-girls' high school, where he's found the girl he's sure he's going to marry, Asahimura Sayaka. When he hears a scream out behind the school one day, he finds Sayaka-chan fretting about a frog inside her clothes, a problem compounded by her frog allergy which soon causes her to faint. (moviemagnet)

A teenage boy is a virgin at high school. He has never had a girlfriend so females are a mystery to him. He focuses on his courses, male friends, and club activities instead. When a new girl transfers to his new school he, like every other boy, falls for her. They get to know each other.

High school boys and girls are dating. Given her looks, thin body, and hair she is popular at school. There is a cheerleader who used to be the most popular girl and is not happy to be runner-up. She wants her popularity back. She tries to trick the other girl. The president of the students' union joined the fight.