WHat is demon slayer?

demon slayer: kimetsu no yaiba is a japanese manga and anime series created by koyoharu gotouge. It follows Tanjiro Kamado,a kind-hearted boy whose family is attacked by demons,leaving only his sister Nezuko alive but transformed into a demon. Determined to save her and avenge his family,Tanjiro joins the Demon Slayer corps and begins a journey filled with danger,friendship,and unforgettable battles.