Jeffrey Kao: There are a bunch of these all over. Unique experience - open 24 hours and you'll eat by yourself in a booth with no face-to-face interactions. Very Japanese.
Jeffrey Kao: This is a bit of a hole in the wall, but it's a super quiet hide out from the Shibuya craziness. Chill and listen to some classical music and maybe bring a book with you.
Jeffrey Kao: Check out the Android lady. Odaiba is a man-made island and there are a bunch of fun things to see around the island. You can even go chill at the bath house also on Odaiba after.
Jeffrey Kao: Play some video games and check out the Don Quijote for souvenirs. They literally sell everything. EVERYTHING. ALL YOUR JAPANESE TRINKET DREAMS WILL COME TRUE.
Jeffrey Kao: Sure, there's the Skytree and Tokyo Tower, but this spot is free and also has a ridiculous view of Tokyo. Go to Shinjuku afterwards and get some food and drank.
Jeffrey Kao: Hakone is more of an excursion than Kamakura, but if you can get out here - try out the hot springs and see if you can catch the view of Mt Fuji!