A girl cuts her hair short, puts on a boys' uniform, and talks her way into an all-boys boarding school. Hisaya Nakajo ran eight years of comedy on that one bad idea.

Mizuki Ashiya leaves America for Japan because of Izumi Sano, a high jumper she saw on television and could not stop thinking about. She lands in his dorm, then in his room, keeping her secret from several hundred teenage boys, one very amused school doctor, and Sano himself. Nakajo plays it for farce first: dorm rivalries, communal baths, a campus where nobody has seen a girl in months. The feeling underneath arrives slowly and never shoves the jokes aside.

The series ran in Hakusensha's semi-monthly shojo magazine Hana to Yume from September 1996 to August 2004, and the art carries that house style. Expect long legs, enormous eyes, screentone flowers when the romance lands, squashed chibi faces when the comedy does. Nakajo draws the boys with the giddy attention the genre is built on, and she keeps her gags physical rather than verbal, which is why they survive translation.

Viz Media published the English edition and finished it in April 2008. Live-action producers have returned to the story again and again, in Japan and in Korea, and Signal.MD finally animated it in 2026 with a second season the same July. The manga remains the version with the most room to breathe.