Reverse!?

Reverse?! is a yaoi manga illustrated by Kazuhiko Mishima.

Plot
A teacher begins his new position at an all-boys school. It's not long after that one of his students starts to hit on him. Another student becomes jealous and glares at them when they're together. Even though the teacher is straight, he decides to humor the boys and make a game out of the situation. But fun soon devolves into chaos as the teacher tries to keep away his young admirer.

Gay

 * Anemiya
 * Mifune
 * Kijima