In-This-Fictional-World-Set-In-Early-20TH,-Century-Taishō-Era-Japan, Man-Eating-Demon's-Roam-The-Land-Each-Night. 13-Year-Old-Tanjiro-Kamado’s-World-Is-Turned-Upside-Down-When-He-Returns-Home-One-Morning-To-Find-His-Entire-Family-Murdered-By-The-Demon-King-Muzan-Kibutsuji and Only-One-Survivor-Left-Was-His-Sister-Nezuko-Kamado-Who-Has-Turned-In-To-A-Demon. Determined-To-Avenge-Their-Death's-And-To-Find-A-Cure-That-Would-Transform-His-Sister-Nezuko-Kamado-Back-In-To-A-Human, Tanjiro-Kamado-Sets-Out-On-A-Journey-To-Train-For-The-Demon-Slayer-Corp's. The-Story-Follow's-Him-As-He-Joins-This-Under-Ground-Organization-Of-Skilled-Fighter's-Who-Dedicate-Their-Lives-To-Protecting-Human's-From-The-Vicious-Creature's. (INCLUDE'S EVERY-DEMON-SLAYER-CHARACTER!)