While trying on her friend’s old high school uniform and pretending to be someone else, the 21-year-old Minato Takatsuki unwittingly attracts the affections of her younger stepbrother, Toru, and ends up dating him! In short order, Minato finds herself falling for Toru, but her secret is discovered by her crush, Karasuma-kun, and now he knows that Tsukaguchi-sempai likes her, too?! How scandalous! The fifth volume of the split personality romantic comedy!