Time Out says
Shinpachi Shokudo is located in the back alleys of Shinjuku, which bustle with hurried office workers in the morning. If you’re looking for a hearty breakfast with succulent fish, crisp pickles and refreshing miso soup, you’ve found the right place.
Inside the tight space is a horseshoe counter, from which the staff offer a speedy, no-frills service. The interior is inspired by a traditional farmhouse, and the food has a similar rustic charm. The breakfast menu includes favourites such as salt-grilled sawara (Spanish mackerel), grilled saikyo miso-marinated king salmon, and goma-aji (grilled horse mackerel infused with sesame oil).