Demon Slayer: It’s the Crescent Moon

In short: This is the story of a little dog who wanders into the world of Demon Slayer and tries to find its way home. In detail: The little dog only wanted to visit its older brother, who hadn’t come home in ages. But after blacking out and opening its eyes again, it found itself somewhere unfamiliar. And so began its arduous journey home. The little dog also thinks it’s too small, so it decides to raise a human child and have them send it home once they grow up. At long last, the human child grows up and heads west. Yueya’er: “Where’s my huge castle?” Yoriichi: “Maybe the West Country isn’t actually to the west?” Iwakatsu: “There’s no West Country on the map, though it did exist in history. That was several hundred years ago.” Yueya’er: “Oh my doggy goodness, the little dog’s world has collapsed.” It’s all right. Big brother will find a way to send me home. Until then, I just have to stay alive. And so began a journey that lasted many years. Years later, inside the Infinity Castle: Koyuki: “Darling, I’ve finally found you.” Douma: “Yueya’er, you’ve finally come to save me, huh~~” Kaigaku: “Zenitsu, let go of my hand!” Nakime: “...” Michikatsu (Kokushibo) looks at his twin descendants. “Good. You’ve improved.” Muzan, who discovers that everyone has switched sides after emerging from the flesh cocoon: “...” A lighthearted, fun story. Tentatively, it’s a platonic pairing. Note: The little dog is a dog demon, not a human, and its values may differ from those of humans. It has its own way of distinguishing right from wrong. Weapon: Tenseiga (mainly used to help locate Sesshomaru) The little dog has its own pocket dimension. Inuyasha’s father could even put his tomb inside Inuyasha’s eye, so it’s hardly unreasonable for Yueya’er to have a pocket dimension for storing things!