Rappa - Yankee Ninpuuchou乱破～ヤンキー忍風帖～; Rappa - Yankee Ninpuuchou; Rappa: The Delinquent Ninja Scrolls

Kazama Endo is the ultimate delinquent, unbeaten in a fight. He goes to scope out a boy who beat up his henchmen, but it turns out this boy is anything but ordinary!