The most popular anime shows ever, as gauged by IMDb votes, social media buzz, and critical reception--purists may disagree that Avatar: The Last Airbender belongs on the list, but our friends in Japan consider it anime, and that's good enough for us.
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.
After learning that he is from another planet, a warrior named Goku and his friends are prompted to defend it from an onslaught of extraterrestrial enemies.