Byakko is a member of the Su Shen. He specializes in viciously attacking his opponents. During his battle with Sagara Sanosuke, he uses a series of well co-ordinated handstrikes aiming at his vital points, called Pai Hu Chan Kung. However, this does nothing but disgust Sano, who tells him to attack with one big technique rather than such small petty techniques. Sano then strikes him down, but Byakko tells him that he was just caught off guard. Byakko proceeds to strike Sano again with his Pai Hu Chan Kung, but is once again put down.
Sano's amazing performance against an opponent of that caliber, despite a damaged right hand, deeply impresses Kenshin whose faith in his friend and ally grows ever stronger.