They did it before he graduated 0v0 FINALLY. Ikuta aoi is so innocent, he was in such denial that he loved sensei that he bottled up all his desire for him until he was constantly sporting an erection at school ( ͡° ͜ʖ ͡°)
While ikuta aoi was confessing to his crush, he was interrupted by the most popular teacher in the school, shizu-sensei. Not only did he ruin his chances with his crush, but shizu-sensei also wooed her over! Ikuta hates sensei, but this insufferable adult has taken a liking to him and refuses to leave him alone.
Sensei Nante Kirai Desu.