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.

The Muromachi period, which lasted from the 14th to the 16th century, was a time of great artistic and cultural achievement, including the development of tea ceremony and the Noh theater.

The Japanese river otter, once common throughout Japan, is now extinct due to habitat destruction and hunting.