Chinese Kung-Fu (referred to as "Kenpo" in Japanese) practitioner. Trained in China and became the heir to his Kung Fu style in his temple. He fights Sergei Taktarov in round 1, Mount Toba in round 2, and destroys Orochi Katsumi in round 3. He then makes it to the semi-finals of the Maximum Tournament and is pitted against Baki Hanma where Baki nearly kills him by breaking his neck. Despite his great knowledge in his style, there is one flaw in his system that Baki seems to possess. In the 'Search of Our Strongest Hero' saga, he has encounters with the British convict Hector Doyle and American convict Dorian. Retsu brings Baki to China to cure his poisoned body and have him fight in a Chinese Tournament. He reappears in Baki: Son of Ogre, during the Pickle saga, having a fight with the prehistoric man and losing it. He then gets his leg eaten by Pickle, as a "gift" for his victory. He later trains Katsumi so that he can become stronger before his fight with Pickle. « less