Nagai's ecchi parody of Jiro Kuwata's [Phantom Detective](https://mangadex.org/title/851462a8-1afb-4462-9ab8-788eb6e21cae/phantom-detective) (Maboroshi Tantei) A dormitory climbing school that consists of junior high and high schools in the mountains of N prefecture. There was another No. 1 in this school with the No. 1 advancement rate from the University of Tokyo. That is the highest crime rate in the school. Kotobuki, who is in charge of the school police, starts a detective activity in the name of Maboroshi Panty to help her father.