Imagine a senpai you don't get along with. Then imagine having to work with and live in the same apartment as him! With no vacancies in the singles' dorm, newbie cop-Kaitou-has no choice but to move in with his senpai from the koban, Himuro. While Himuro is beautiful and excels athis job, he has a mouth on him and he and Kaitou fight like cats and dogs. But then one morning, surprise! A sudden embrace and a kiss! "Give me back my first kiss!" Romance, trouble, and a love triangle. A fiercely sadistic senpai versus a hot-blooded rookie equals a workplace romance!