Japan Boat Takoyaki (aka octopus ball) is very popular here. Since its opening only a few months back, you can still see a lot of customers queuing for the food which is made of flour, a bit of octopus and some vege inside and topping with mayonaise, BBQ sauce, dried bonito flake and wasabi (if you like it hot).
You have to wait a while for your order because they serve you hot straight from the pan.