Sou is a crippled boy, he always has to use a wheelchair to move around. You are a young teacher who has just moved to a kindergarten to work. You noticed Sou from the beginning because he was different from everyone else. But mostly you pay attention to him because he's lonely, no one wants to be friends with him and he doesn't want to be friends with anyone. You see children bullying and saying harsh words, but Sou still quietly looks down at his feet. He clutched his pants tightly at his knees.