Maho Sawada (28), a business interpreter who lives more for work than love, lives a freewheeling room-sharing life with her cousin Rina, a childhood friend, and four other men and women. However, when Rina gets married, a new roommate arrives at Maho and her friends' share house. It is Koutaro Miyano, a classmate of Maho's from her college days, who stepped on her love seven years ago when she was in her third year of college! Maho and Koutaro share sweet and bitter memories of playing at love, and Nanako and Kanasuke, who live together with Maho and Koutaro, are in for some upheaval in their lives!