What is love, anyway? Ninako Kinoshita's friends tell her it's one thing, but Ninako wonders what this mysterious feeling really is. When she meets Ren Ichinose, the handsome, enigmatic guy that all the girls worship, her life takes an unexpected turn. With just a few words and a smile, he changes her world...

Ninako is thrilled that she's in the same class as Ren for the new school year, but is their closeness due to the fact that he only sees her as a friend? Meanwhile, Ninako's friend Sayuri faces an old flame's ardor... Will her past love stay in the past?