The film version of the anime "Oni no Hane" written by Yoseharu Agatoge, which ended with the last episode of the TV anime, "A New Mission", in which the main character, Sumijiro Kamakado, and his friends board the "Infinity Train" where the film is set. The film ends with a scene in which the main character, Sumijiro Kamakado, and his friends board the "Mugen Train," the stage for the film. This film depicts a new mission for Sumijiro and his friends on the "Mugen Train. After completing their training at the Butterfly House, Sumijiro and his friends arrive at the "Infinity Train," the location of their next mission. There, more than 40 people have gone missing in a short period of time. The group of Sumijiro, Zenitsu, and Inosuke, accompanied by Priestess Priestess (*The "Priestess" in Priestess is officially written as "Ne"), join up with one of the strongest swordsmen of the Onikagitai, Pillar of Fire, Purgatory Kyozuro, to confront the demons in the "Infinity Train" that travels in the darkness. ......
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