In business for over a century, Otafuku specialises in oden, a classic Japanese dish of vegetables and seafood simmered in a soy sauce and dashi (fish stock) broth. You can dine cheaply on radishes and kelp, or splash out on scallops and tuna. Order a couple of items at a time; put your plate onto the counter to signal you want to order more.
There's also an option to have a whole pot to yourself on your table and a tailor-made course (from ¥5500 for two people).