Guts is a skilled swordsman who joins forces with a mercenary group named 'The Band of the Hawk', lead by the charismatic Griffith, and fights with them as they battle their way into the royal court.
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.
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.
When Natsume Takashi inherits a book that belonged to his late grandmother he realizes the book is filled with the names of spirits she defeated and bound to her will. He then decides to return their names so they can be free once again.
A young boy sells his soul to a demon in order to avenge his family's death and successfully lead their influential toy manufacturing company. The demon takes the form of a loyal butler who's always dressed in black and is required to protect, serve and arrive whenever summoned by his young master
Demons invade humanity after being frozen in ice for millions of years. Akira, a timid boy, is tasked by his friend Ryo to merge with one of these demons in order to be able to fight back against them for the sake of humanity.