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 Heian period, which lasted from the 8th to the 12th century, was a time of great cultural and artistic achievement in Japan.
The karaoke machine, which was invented by Daisuke Inoue in 1971, has become a popular form of entertainment worldwide.
