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

The Taisho period, which lasted from 1912 to 1926, was marked by political instability and social change, including the rise of labor unions and women's rights movements.

Neon Genesis Evangelion, created by Hideaki Anno in 1995, is a popular anime series that explores themes of psychology, philosophy, and spirituality, and has become a cult classic.