When Chae Hyungwon was recruited into the school swimming club by the coach himself,everyone was curious of the reason. Why? Especially the all time swimming champion,Shin Hoseok,who has won multiple championships in the country.

Others always knew Chae Hyungwon as the student that teachers adore and a kid with the largest smile plastered on his face everyday. His face was almost angelic. Students are always comfortable of his presence although he doesn't talk much. Teachers adore him,students love him at school,neighbours had always wanted a child like him. But they don't know how Chae Hyungwon's real life is.