Tokyo is overwhelming in the best way. Start in Shibuya for the crossing and nightlife, then move to Shinjuku for skyscrapers and Golden Gai alley bars. Harajuku on weekends is essential for street fashion and Takeshita Street snacks.\n\nDay trips worth it: Kamakura (giant Buddha, 1 hour), Yokohama Chinatown, Nikko shrines.\n\nMust-eat: conveyor-belt sushi, ramen at Ichiran, yakitori under the train tracks in Yurakucho.\n\nBest neighborhoods to stay in: Shibuya (nightlife), Asakusa (traditional), Akihabara (anime/gaming).