Adultery is Something You Want to Do No Matter How Old You Are

いくつになってもやりたい不倫 (original title)

Synopsis

Shigeo and Yaeko, a middle-aged couple, are involved in a car accident one day. Shigeo dies, but Yaeko survives. However, it turns out that the two were having an affair. Involving both of their families, the chain of explosive love, lust and desire continues.