Aoi Nishimori is a high school girl who lives alone in her own apartment, but to her surprise, she discovers that the prince of her school, Shusei Kugayama, has moved in next door! To add to this, a series of crazy happenings result in the two living together under a single roof! Shusei is known to be a heartless guy and Aoi particularly hates him after he coldly rejected her best friend, so a life of cohabitation seems like a recipe for disaster. And yet, Aoi somehow can’t stop her heart from pounding when she’s with Shusei…
Having acknowledged her own feelings for Shusei, Aoi must now muster the courage to tell him that she likes him. But with Shusei’s popularity, will she be able to do anything before someone else snatches him up? Luckily, Shusei’s older brother comes into the picture and comes up with a way to light the flame of romance in Shusei’s heart, but his older brother’s unconventional plan may take things too far…