Go see some wrestling at Korakuen Hall - I had to go there as a wrestling nerd pilgrimage and happened to get to an anniversary show of a decently-popular wrestler, but they run shows like every night of the week so you could just pick one any time.

Here's the schedule - i'm sure me and a few others could give you a rundown on some of these promotions.

Hint: the Joshi (women's) promotions hit fucking harder than the men most of the time. Every cool wrestling move you've seen in the last 20 years was invented by a Japanese woman.

Korakuen is also part of the Tokyo Dome City, so there's all the other stuff to do surrounding it too (the rollercoaster, shopping centre & restaurants, the Baseball HoF/museum, the Dome itself for tours and baseball if you're lucky)