Hentai fûfu: Torokeru shinshitsu 2013

Directed by Yutaka Ikejima

Hiratsuka, a divorced section chief who is well-known within the company for being a loving husband, dreams of having children and living in a home of his own, and is devoted to cosplay sex with his wife, Saori. However, one day, her husband's penis suddenly becomes unable to become erect. Saori believes in her husband's love and suggests that he have physical relationships with other women.