, the , is an employee of SCRTC and a practitioner, using Piguaquan martial-arts techniques. When he was a child his older brother Gou was killed, leaving him with a hatred for Rio who was said to be responsible. He set aside an artistic career to study the same fighting style as Gou, in order to move past his desire for revenge. Retsu is initially intelligent but selfish, does not take interest in others, and gives an impression of extreme coldness. He believes that winning should be like a painting, complete and inspirational. He sometimes mixes English loanwords in his speech. He learns of moving sensation of a trance when he masters Bat Li's style. He prioritizes in his training. His attention to beauty costs him stamina, making his "Body" his weakest point until he beats Bion Biao in an endurance match to obtain Kageki, and becomes the , . As Super Geki Blue, he uses the style.