Couple Swap 2 (2018)

Chizuru, a female writer specializing in 19 gold novels! While contemplating her new novel, she makes a radical proposal to the Akane couple who lives next door to actually try swapping for a more vivid depiction of swapping. The small deviation that started just for her writing suddenly encroaches on the two of them. Once tasted, an unforgettable and addictive ecstasy begins now.