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…
Aoi and Shusei have finally admitted their feelings openly and have decided to be together as a couple. In the midst of trying to balance their living situation with the added romance, the pair gets an unexpected visit from Aoi’s father, a towering former bodybuilder! He is shocked by their cohabitation and threatens to put an end to the comfortable life she’s gotten used to with Shusei. With all she holds dear on the line, will the couple be able to convince Aoi’s father that this is a relationship worth fighting for?