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.

Tokyo is the political and economic center of Japan, and is home to the Tokyo Stock Exchange and the headquarters of many major corporations.

The pocket calculator, invented by Sharp in the 1970s, made complex calculations more accessible and convenient for the average person.