Mr. Yamano, a physical education teacher working at a small elementary school in the countryside, lusted for Mr. Kiyono, a beautiful math teacher who had been transferred from the city. The two of them were staying alone in the night watch room, and found out that their hearts and crotch were swelling up with anticipation. This chastity slut has his seductive ways despite his love affair.

(Source: Clap Comics, translated)

Included one-shot: Sake to Tobacco to Kiss