Majime Masato, an unassuming second-year at Ichisakura Academy, rescues a black cat and receives a mysterious smartphone in return. The device grants him access to unusual applications that let him approach the academy’s celebrated female students in surprising new ways. As he experiments with its features, Masato’s reputation shifts from ordinary pervert to someone capable of bolder encounters across campus. With his sights set on deeper connections, the first steps of his ambitious journey unfold.