Sensei wo Abakitai

Tachibana's high school teacher's problem is that he has erectile dysfunction due to the shock of divorcing his wife. His younger colleague Odagiri, who is very fond of him, finds out about his problems and pressures him to "cooperate in treating his erectile dysfunction." Tachibana tries to refuse, but Odagiri reveals a desire he didn't even know he had! (description from the Hakusensha publishing catalog)