There are no McDonald’s in Japan. Rest assure people there are plenty of McDonald’s in Japan. Along with an abundance of KFC and some Wendy’s restaurants. As far as the other fast food restaurants that you may be familiar with well I am afraid you are out of luck. You will probably find more ramen shops than any of the fast food shops you may be used to seeing in your home country. The Japanese have a different take on fast food and junk food then what most western countries have.