if you are looking for things to do in Tokyo, lets go to Tsukiji fish market.
I would like to intorduce one of the standing style Tsuna restraunt.
Maguroya Kurogin (まぐろや黒銀）is originally Maguro (tuna) broker.
but you can enjoy high quality Maguro, it really yummy.
“chu-toro” (the belly area of the tuna) is around 1000 – 2000 Yen.
“akami” (the leaner meat from the sides), is around 1000 yen
“oo-toro” (fatty-tuna) is around 2000 yen – 3000 yen.
you can choose as you want!