Jukei is the Hokuto Ryūken master who trained the three Rashō and Shachi. In the past, he went through a demonic possession as a result of his misuse of his style, killing his wife and child, but was rescued by Ryuken. He then trained Kaioh and Hyoh, sealing Hyoh's memories of Kenshiro and his knowledge of the original Hokuto style. In the present, he forms part of Leia's resistance and attempts to undo the seal, but gets killed in the process. (Source: Wikipedia)