Ryosuke Kamiya, a third-year college student, is paired up for a presentation with Ruka Someya, a classmate from his seminar whom he secretly finds cute. His joy is short-lived, however, as Ruka—claiming she's too busy with her part-time job—proves to be no help at all, leaving him to prepare for the presentation almost entirely on his own… While working at home, Ryosuke loses his concentration and starts browsing an adult video streaming site, only to be stunned by the sight of a sexy actress who looks exactly like Ruka…?!
