Chuuya is a 16 year old boy with gravity manipulation powers. One year ago he joined the Mafia after meeting an annoying kid named Dazai, who's the same age as him. Now chuuya has a group of friends he considers his family. His friends are Pianoman, Lippmann, Iceman, Doc and Albatross. They are a group of talented mafiosos, who love to mess around but are also serious when it comes to mafia business. Chuuya is always sarcastic and he doesn't like to show his emotions, but he's actually kind.