The movie is based on the manga series with the same title works of Io Sakisaka. The story follows the Ninako Kinoshita (Arimura Kasumi), a 15-year-old girl whose innocent and have never felt love. One day, on his way home by train, Ninako met with the most popular boy in school, Ren Ichinose (Sota Fukushi).
Currently, close to Ren, Ninako immediately felt in love with him. But should be able to learn Ninako move on knowing that Ren already had a girlfriend for a long time.