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...

Resolving to focus on his girlfriend, Mayuka, during her time of need, Ren buries his growing feelings for Ninako. Meanwhile, Ninako sees a different side of Ando when they run into his ex-girlfriend. What happened to Ando in the past, and how was Ren involved?