[Crossover] The Beast Beneath the Moon Comes from the Demon Slayer Corps

Basically, Dun was adopted as a child by one of the Hashira in the Demon Slayer Corps. Later, a Blood Demon Art stripped him of his money and sent him to Yokohama, where he happened to run into Dazai. Includes the worlds of Demon Slayer, Bungo Stray Dogs, The Disastrous Life of Saiki K., Jujutsu Kaisen, and Detective Conan. Setting: The Demon Slayer era has been changed from Taisho to Heisei. Atsushi is in the same generation as the Water Hashira. The timeline mainly follows Bungo Stray Dogs. Pairing: Dazai x Atsushi Core theme: World peace