Guest and Mugi, who have been dating since high school, decided to start living together upon entering university. Mugi is soft, airheaded, and friendly—a cute and healing presence... but in reality, he's quite a klutzy boyfriend.

Oversleeping, forgetting things, failing at cooking—he messes something up every day.

Despite the chaos, for some reason, being with him is calming. A laid-back and sweet life living with your klutzy boyfriend, Mugi.