START-263 A once-in-a-lifetime proposal NTR: I want you to sleep with another man before we get married. At the moment she was given an engagement ring, her boyfriend told her this. Unable to bring herself to break up now, the submissive girlfriend, Reno Nagisa, reluctantly accepted.

Nagisa and Saito had been dating for five years. It was supposed to be just an ordinary date. In a hotel suite, Saito suddenly took out an engagement ring and proposed to Nagisa. Then he said, I have one more important thing to talk about. Saito seemed different from usual, and a heavy silence filled the room. Before we get married, I want you to be with another man. Persuaded by Saito’s words, unfamiliar men begin appearing one after another before Nagisa…