'Mio is mine… I won’t give her to anyone.' Mio Kayama, a caring and dependable girl, always puts others before herself. One day after her part-time job, she finds her classmate Saku—the kind, perfect guy—getting harassed by some troublemakers. Instinctively, she rushes to help—but in the next moment, Saku single-handedly takes them all down…!? Handsome, smart, and athletically gifted—the trifecta that makes him the most popular student in school. After witnessing Saku’s ruthless side, Mio panics. Yet, it's only to her that he seems to let his guard down, whispering tenderly, 'If it's your wish, Mio… I'll make anything come true for you.'