Irene is a girl who always wears a mask in school. She doesn't talk and she doesn't have any friends either. People look at her weirdly and spread rumors about her. Ren is a cheerful boy, he's outgoing and have lots of friends. He is usually surrounded by people. Kai is quiet and has a scary face. He's not good with interacting with people and a lot of people is scared of him. The meeting of the three of them will change their lives forever.