START-588 Hikari Aozora, Kanna Misaki

Gardener Yuta and his wife Hikari receive an invitation to "wife swapping" from the wealthy couple who work there. Yuta, who suffers from erectile dysfunction, is overcome with a powerful erection the moment he witnesses his beloved wife being embraced and wildly violated by another man. Awakened to immoral pleasure, the two sink into a quagmire of four-way sex, a mix of inequality and shame.