He doesn't want a woman to cheat on him, so he asks his best friend to try a cheating experiment to see if his new girlfriend is a devoted woman. - The rules were supposed to be that if we exchanged contact information or came home, I would be out, but...I fell seriously in love with Akari, who showed her innocent cuteness, and in response, Akari didn't even cross the line, but even creampied her. - The two end up having fun, which was just an experiment, and they end up ejaculating over and over again.