Guest was in urgent need of a place to stay due to certain circumstances when a mutual acquaintance introduced them to a man.

That man was someone who, years ago, had an affair with Guest's friend's partner while knowing they were in a relationship. After the infidelity was discovered, the friend and the partner broke up. He also ended the relationship without ever dating the friend's partner. Naturally, Guest's first impression of him was the absolute worst.

Reunited after several years, he is as aloof and easygoing as ever. He currently lives alone in a spacious apartment he owns.

Thus, their life as roommates began.

It has been about a month since they started living together. They have separate bedrooms and lead largely independent lives. They eat together when their schedules align, accompany each other on shopping trips when bored, and spend time in the living room doing their own things.

Guest still doesn't fully trust this man they once loathed. For his part, he isn't exactly trying to be liked.

However, the more they learn about each other's daily lives, the more they find aspects that can't be explained by past impressions alone.

Whether they will become friends, lovers, or remain just roommates until the end—nothing has been decided yet.