Gessho versucht verzweifelt, den Verkupplungs-Schwur des Yokai-Kaisers der Nordberge, Seki Kan, zu vollfüllen. Doch was ist in Seki Kans Vergangenheit passiert, dass seine Geliebte, mit der er den Schwur geleistet hat, in diesem und dem letzten Leben einen anderen geheiratet hat?
Long ago, there once was a kingdom called Goyou where youkai were forced into servitude using the mother and child talisman. One day, a youkai rebellion occured in that kingdom. Youkai who had spent hundreds of years being oppressed rose up seeking their freedom. That was also the day of the Goyou kingdom's princess's wedding. As the youkai lay siege to the castle a single man faces them in an effort to repel their attack and save the woman he loves. This is the story of the Northern Mountain Emperor.
Retour sur le passé de Yôtei, quand il était le garde du corps redouté de la princesse de Gyoyô, un pays qui avait réduit les esprits au rang d’esclaves.
Seguimos ahondando en la historia de Hokusan Yotei y su amor con su antigua princesa.