JUC-662 Your son isn't impotent, you know. Shirakawa Yukino.

Five years after marriage... Yukino was troubled by her husband's impotence. The only pleasure of such a frustrated Yukino is a meeting with Yoshiko, the wife of the Yasui family next door. Today, when she visits the Yasui family and talks about her rumors, Yoshiko suddenly starts to say, "Actually, her son, Akira, is an impotent." Yukino can't accept the fact that even a young man can become an impotent. That should be true, but Akira's impotence is temporary, and one day Yukino finds out about it...