>>6643433>>6643434Didn't go to Yokohama, but in Tokyo I definitely recommend just walking around random residential areas on a nice, sunny day. Wander around, see what you find, enjoy the sights and sounds. Visit Joypolis, go to Akihabara, Hamamatsucho, Tokyo Tower and Skytree if it's a good day with little clouds/smog/haze, eat from all the convenience stores you can, drink anything you like from vending machines, Roppongi has a pretty nice nightlife, and go to the Ninja Restaurant, amazing experience.