Oga Tatsumi is a first year student in Ishiyama High, a notorious school for delinquents. One day he sees a man floating by, and the man suddenly splits in half to reveal a baby boy inside!.

A boy whose friend died and became a ghost, starts high school. On his first day, a trunk is sent to him by his brother. From that moment on everyone are after him believing that he holds the mysterious powerful "Asura Machine".