Sakurai Chisaki is a soft-spoken high school girl who longs to be the protagonist of a girl's novel.
Chisaki has been hiding behind her best friend Himari Kusunoki, who is always cheerful and cheerful like a hero.
One day, a photo of Chisaki that was taken secretly became a buzz on social networking sites.

I thought I was only a supporting character in this world.
Chisaki's own love story.