Yokohama is Japan's second-largest city and a major port city located south of Tokyo, with a population of over 3.7 million people.

The Yokohama F. Marinos, a professional soccer team based in Yokohama, is one of the most successful teams in the J.League, having won several championships.

The electric toilet seat, which can be heated and has various cleaning and drying functions, has become a popular feature in Japanese households.