Kenshiro and Kaioh's deadly struggle continues. But Kenshiro is put in dire peril when his body becomes paralyzed by gas in a cave beneath the Swamp of Demon. Meanwhile, learning of the destructive point hit on Lin, the Asuras go after her. Danger draws closer and closer to Lin as she begins to regain consciousness. Will Hyoh make it in time!? In the midst of battle, Kenshiro learns that Kaioh also bears the blood of the main family of the North Star. There is a story behind that, a tragic tale about the main family of the North Star from before the Divine Fist of the North Star was founded...
Kaio conduce Ken in una grotta sotterranea che sprigiona gas letali ma il maestro di Hokuto riesce miracolosamente a tornare in superficie. Nel frattempo Hyo salva Lynn appena prima che la ragazza venga risvegliata dal demone Samoto. Infine si scopre che l'Hokuto Gemmy fu fondata da Ryuo cugino di Shuken, antico maestro della scuola di Hokuto.
Kaio lleva a Ken a una cueva subterránea que libera gas letal, pero el maestro de Hokuto logra milagrosamente regresar a la superficie. Mientras tanto, Hyo salva a Lynn justo antes de que el demonio Samoto despierte a la niña. Finalmente, resulta que Hokuto Gemmy fue fundada por el primo de Shuken, Ryuo, un antiguo maestro de la escuela Hokuto.
