Demon Slayer is a popular Japanese manga series by Koyoharu Gotouge, and it's one of the best-selling manga series of all time. In 2019, a two-season anime television adaptation of the manga called Demon Slayer: Kimetsu No Yaiba was released in Japan and made its way to American audiences via Adult Swim that same year. The story follows protagonist Tanjiro Kamado, a teenager who aspires to become a demon slayer after his family is tragically killed by invading demons, except for his younger sis…