Speaking of blood, you need to declare you blood type before you can enter Alcatraz E.R., which is part prison, part hospital -- and all weird.
From the book "Crazy Wacky Theme Restaurants Tokyo" by La Carmina.
Drinks come in syringes and beakers, and the menu features items like penis sausage and dead chicken feet. There's even a Russian roulette appetizer -- six octopus balls. One of them is filled with red-hot wasabi. Choose wisely.