Open court of new fighter

Once open a time the king of zalim name is king predator, the king is fighter all humans very scary to the king. everday the king is number one in list fighter the king very heavy and strong, then one day the king predator open competition to the people the king said "anyone can beat me, i'll appoint he became the crown prince me". and all the people agree to take the challenge made by the king of the predators.