Kendo, a martial art that uses bamboo swords and protective armor, is a popular sport in Japan and is often taught in schools.
The vending machine, which has been in use in Japan since the early 20th century, offers a wide range of products, from drinks and snacks to clothing and electronics.
The computer mouse, invented by Ken Kutaragi in the 1980s, has become a standard input device for personal computers worldwide.
