A crime boss destroyed my dad’s dojo, so I entered his martial art tournament for revenge

Five years ago, his family dojo was attacked by a crime boss, now after years of training, Kaji Kagami seek revenge on the criminal who destroyed his family dojo and killed his dad. Ronald Price is a successful businessman on the outside but he's actually a crime boss who loves martial arts. Every year he holds an underground tournament where the winner can have anything that money can buy as a prize. Countless fighters have entered the tournament, but none has won against Ronald. Can Kaji finally avenge his dad's death?