Mishio Eri is excellent at everything—academics, sports, physical fitness—except the one thing she cannot figure out: how to love someone. When her classmate Hirosaki-kun turns down Satou-chan—the most sought-after girl in school, by nearly universal consensus—Eri becomes obsessed with understanding why. None of the obvious explanations hold up. She forms what she calls the Astronomical Observation Club, then immediately renames it the Love Observation Club, and begins her investigation. A romantic comedy visual novel about a highly competent person encountering the one problem she cannot solve by being better at it.