Jukei seeks to restore Hyoh's sealed-off memories, and draw out the "Key" to destroying the North Star Lapis Lazuli Fist, the primary thing Kenshiro would need to win against Kaioh. Kenshiro and Hyoh belong to the main family of the North Star, and Hyoh was the only person to learn the location of the hidden technique. But even after coming to terms with reality, no technique seems to be able to break the seal on his memories. Meanwhile, Kenshiro, in his quest to rescue Lin, sets foot in Kaioh's castle... (thetvdb.com)