17 Kyoushi

Arioka Yukihiro is a 17-year-old high school student who has never been in love until he develops feelings for his teacher. Determined to claim the teacher for himself, he pursues a relationship with him. Mishima Makoto, a 26-year-old teacher, has long harbored affection for a close friend but believed his feelings were unrequited and would never be acted upon. After initially rejecting Arioka's advances, Mishima begins to confront his own unfulfilled emotions as Arioka continues to pursue him openly, regardless of the potential for rejection.