Maki Maehara is a quiet high school student who likes to keep to himself and go unnoticed, but his home routine is completely upended when Umi Asagi, the most popular girl in school after the usual unattainable beauty in the class, begins secretly visiting him. Within the confines of her home, away from the prying eyes of her classmates and the social pressures of school, Umi sheds her perfect facade and reveals her true colors: a genuine girl, a bit lazy, and a video game lover. What begins as a strange and secret Friday night friendship slowly transforms into a deep and unexpected bond, where both learn to show themselves for who they truly are, confronting youthful paranoia, jealousy, and feelings that are starting to become decidedly too cumbersome to ignore.