MangaDex

Suki ni Nattara Dame Desu ka?

After Kaname jokingly called out his teacher Natori for ogling a male student, Natori-sensei was so shaken up that he couldn't teach properly. Later when Kaname was called into Natori's office, Kaname confessed that he himself is gay and that Natori doesn't need to worry about rumors. Even though Kaname has no intention of blackmailing Natori, he decided that he'll spend his time teasing Natori.