In the 12th century, the samurai class emerged in Japan, with warriors serving as protectors for the aristocracy.

Naruto, created by Masashi Kishimoto in 1999, is a popular manga and anime series that follows the adventures of a young ninja as he strives to become the strongest ninja in his village.

Attack on Titan, created by Hajime Isayama in 2009, is a popular anime and manga series that takes place in a world where humanity lives in fear of giant humanoid creatures known as Titans.