Demon Slayer
A family is attacked by demons and only two members survive - Tanjiro and his sister Nezuko, who is turning into a demon slowly. Tanjiro sets out to become a demon slayer to avenge his family and cure his sister.
Jujutsu Kaisen
A boy swallows a cursed talisman - the finger of a demon - and becomes cursed himself. He enters a shaman's school to be able to locate the demon's other body parts and thus exorcise himself.
Frieren
Elf mage Frieren and her fellow adventurers have defeated the Demon King and brought peace to the land. But Frieren will long outlive the rest of her former party. How will she come to understand what life means to the people around her?