Kojiro is left mystified after seeing a vision of his deceased father, Jisai, who begs him to become "the scabbard of the Obsidian Goddess." Kojiro seeks out Shishikado Hojo for answers, whereupon Shishikado recounts the tale of Jisai's heroic deeds and tragic demise. With the mystery of Jisai's death revealed, Kojiro begins his true battle to reclaim the Land of the Setting Sun.