To carry out his revenge, Katō allies himself with a "yōkai" named Agi, summoning a fiery spirit called Yomotsumono: a creature composed of the resentment carried by the multitudinous things mankind has discarded. Katō feeds "yokai" into Yomotsumono's flames, fusing them with the numerous discarded tools and items to form "kikai". These "kikai" - under Katō's control - capture other "yōkai" to build their numbers while killing humans. One such "yokai", a "sunekosuri" escapes and befriends Tadashi who attempts to obtain the Daitenguken from the mountain as a right of passage for the role of Kirin Rider. Scared by the tales told of the mountain, Tadashi falters upon his arrival at the mountain and tries to flee. However, tricked by the sea spirit Shōjō, who picked Tadashi out, he manages to overcome a test to prove his worth. Accompanied by Shōjō, Kawahime, and Kawatarō, Tadashi makes his way to the Daitengu who gives him the sword before being taken away by the "kikai". In spite of Tadashi's attempts, the sword is broken as Agi takes the "sunekosuri" as her captive before the boy is knocked unconscious. When Tadashi comes to his senses, he finds himself among "yōkai" as they discuss how to fix the sword; they ultimately decide to request the aid of the blacksmith Ippondatara. Upon learning that Ippondatara was also captured, General Nurarihyon and his group leave. Kawataro restrains an ittan-momen, praising the bumbling Azukiarai, unaware that he only remained behind due to his foot getting numb. When Katō's industrial fortress takes flight towards Tokyo, Tadashi and company pursue it. They arrive shortly after the fortress ingests Tokyo's Shinjuku Capital Building, finding Ippondatara who reforges the sword. Ippondatara refuses to talk about how he escaped, ashamed that the "sunekosuri" took his place in becoming a "kikai". Donning new attire, Tadashi and company go into battle. They are greatly outnumbered until they receive unlikely aid from thousands of "yōkai" who believe they are coming to a party; their festival brawl with the "kikai" allows Tadashi and Kawahime to enter the fortress safely, followed by a "yōkai"-obsessed reporter named Sata whom Kawahime saved in the past.