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The year is 2023, and Demons still roam the earth as they feast on those who can't fend for themselves. That's why the Hashira and Slayers still live on. They won't stop till they defeat this curse of a subject.
Kyojurō Rengoku and His wife Akako (Adachi) both serve as Hashira, things seem to be getting better till an Upper moon appears. Something that has never happened in the past century. Is something bigger going on? and will the Hashira be able to fix it before they lose the world they love? Can they survive what this Upper moon has for them?