Hiro Aise is currently living at his friend's older brother's house in Japan due to the decision of his parents. The brother, Mizuki Onosawa, is an accountant and considered the ideal husband by many. Initially, their life together seems happy with Hiro preparing meals for him and waking him up in the mornings. However, there is a problem: Hiro has romantic feelings towards men while Mizuki is his first love. One day, while feeling horny, Hiro accidentally reveals his true feelings to Mizuki who sees him masturbating. To everyone's surprise, instead of reacting negatively, Mizuki suggests that they have a fake romance together.