The Suzunari high school detective club which consists of three good looking high school students; Suzaku Tachibana， Kohei Hiba， Sotaro Tsubaki， and a cat call Boo-chan. Boo-chan holds the power to decide the girls who get to join the club. Since there hasn't been any girls Boo-chan approved so far， the club has been a boy-only club since the first day. Until the day Suzaku used his intuition to scout Aoi Kaido， who he thought would be a cute girl. This was approved by Boo-chan， but she turned out to be a girl who’s weird and doesn't smile… This is High school tale about the detective club of 4 students and one cat solving incidents on campus.