I had a great time in Tokyo and Kyoto, and there was definitely more I could have seen! I definitely think that you would need at least three weeks to feel like you had even scratched the surface of what there is to see!
I recently went on a trip to Japan. During my visit to Tokyo, I went to many places including Tokyo Tower, Yamanashi and Mount Fuji. I also visited Kyoto, and the Golden Temple, the most famous Japanese sightseeing attraction.
I have been to Tokyo, Japan 5 years ago. People there are so polite and I like the sushi there. Disneyland is the most amazing place to check out, the environment made me excited!