``Maki'' and ``Mizuki'', who live on the same floor of an apartment, were talking about sexless relationships with each other's husbands again today. - Meanwhile, a young man named ``Yamada'' comes to Tokyo to be on the same floor as the two married women. - It didn't take long for Yamada to attack the two married women with a strike. - Later that day, Maki goes to Yamada's house to help unpack, and Mizuki comes to share dinner with him. - The reverse threesome that began with the frustrated married women was just the beginning of a new life in a dream harem...