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In an alternate timeline, a female Oda Nobunaga is seen jumping into an inferno before being engulfed by a strange light. She arrives in the modern day where she runs into a boy named Seiichi Ōta, who helps her out. After spending a few days with Seiichi, Nobunaga desires to find a way back home and encounters three shrine maidens . They tell her that in order to return home, she must retrieve several 'secret treasures' residing in the hearts of the other feudal lords who were accidentally warped to this world.