My daughter is having an affair. When Ryo (Fukutomi Ryo) was told this by his stepson, he felt full of regret. Ryo has a past where he divorced due to his own infidelity. He said that his daughter finding a man outside was because she inherited his blood and apologized. As a form of apology, he reached out to his stepson's crotch. If the stepson had pent-up frustrations with his daughter, Ryo would release them for her. That was Ryo's way of making amends.
