Saikai: Kinjirareta otona no koi

Yumiko (Asami Kumakiri) has an ordinary marriage life with her husband Yukihiko (Yasukaze Motomiya). Her ex-boyfriend, Koji (Kengo Oguchi), moves in next door. They are reunited for the first time in a long time and their passion revives, but Yukihiko becomes aware of their relationship.