The manga focuses primarily on four friends, students who are struggling with their daily problems, which arise from their difference's several humorous scenes. The opening theme is "
Morning Arch" by Marina Kawano, and the first ending theme is "
Humming Girl" by Aoi Yuki, Kaori Fukuhara, Minako Kotobuki and Yumi Uchiyama.
Students Run and Tooru are good friends since their childhood. Run can be described as quite stupid, because even the simplest things always clueless and naive faces, forgetting the important things and concentrate for long periods can fall asleep without it.
