Due to her father's six million yen debt, sixteen-year-old high school student Fumi Oono and her father are evicted from their apartment. In need of a place to stay and a job to earn money, she starts to work as a live-in housekeeper for the young writer Akatsuki Kibikino.

When they meet for the first time, the two start off on the wrong foot, with Akatsuki calling Fumi useless and treating her like a child. Determined to pay off her father's debt, Fumi works hard to prove him otherwise. However, despite Akatsuki's foul-mouthed and mysterious behavior, she begins to realize that he is not as despicable as she initially thought, gradually unravelling the passionate and caring person underneath.

Volume 7: Hirunaka no Ryuusei Bangai-hen: Blue

Volume 8: Hirunaka no Ryuusei Bangai-hen: Red