付き合って5年の渚と斉藤。普段と変わらないのデートのはずだった。ホテルのスイートルームで斎藤はおもむろに婚約指輪を取り出し渚にプロポーズする。「もう一つ大切な話があって」いつもと違う斉藤。重苦しい空気が流れる。「結婚前に他の男と寝てほしい」斉藤の説得にほだされる形で、見知らぬ男が次々に渚の前に現れ…。
Nagisa and Saito have been together for five years. It was meant to be just another date. In a hotel suite, Saito suddenly takes out an engagement ring and proposes to Nagisa. “There’s one more important thing I want to tell you,” says Saito, a different man than usual. An oppressive atmosphere hangs over the room. Persuaded by Saito’s persuasion that “I want you to sleep with other men before we get married,” one after another strange men appear in front of Nagisa…

– JavGG.net