Saera was the person in school withalways the cheerful and strongest front one will ever see. She believes that the stronger she let herself show, the more people won't worry about her. 

But one day... someone saw through her front, and he's none other than one of the school's princes, Jung Hoseok , the one known as the Happy virus in the team. 

She saw through his front too, when she accidentally stumbled upon him.

Will they comfort each other or will they leave each other alone?