The Ring of Arcana has appeared. The Western Yōkai return to Japan. Kitarō, Agnès and the others desperately search for the ring. However, Mana discovers the ring first by chance. Not knowing that it was the Ring of Arcana, she puts it on her finger for a moment, only to panic when she is unable to take it off. Kitarō faces off with Adél in order for Mana to escape. In her path were the Western Yōkai Wolfgang, Victor, and Carmilla, who attacked one after another. Konaki-Jijii, Nurikabe, and Neko-Musume go in for support. Mana is thrown into the center of the intense battle for the ring!