>> give you happiness. >> give me happiness. >> yeah. >> reporter: this is no children's restaurant. there are grown men here in suits, and they seem to be enjoying themselves a lot. >> is it sexual? >> no. nothing seedy goes on at maid cafes. ♪ >> reporter: dessert was followed by a lip synced j-pop mash up of straight up weirdness. but the night is young. so i venture to a place appropriately called the robot restaurant. no one could have prepared me for the bounty of strange ahead. ♪ we went from a giant spider to a panda to a shark that i think just ate a man and had a mermaid on his b...