While Yaiba and Onimaru battle it out, a new enemy appears—Kaguya, the Moon Princess! Armed with fearsome power and a thousand-year-old grudge, Kaguya sets her sights on Yaiba, who has inherited the spirit of the Dragon God. A three-way battle begins between Yaiba, Onimaru, and Kaguya. If Kaguya can sideline Onimaru, she’ll turn her attention to Yaiba and the Dragon God while her minion Mangetsu hatches a plan to flood Tokyo! When Kaguya finally reveals her true form, it’s scarier than anyone could have imagined!