This place is very cool as they swap menu each month based on various regions of Japan.

We went during the Tokaido region. I must say, the selections were awesome.

About:

Tucked away in the basement of the Kinokuniya Bookstore, you'll find a unique spot where you can take a culinary journey across Japan without ever leaving Shinjuku. This restaurant, created by the editors of the famous "Rurubu" travel guides, offers a menu that changes monthly to showcase delicious and authentic dishes from different regions of the country. It's a fantastic way to discover local flavors and maybe even get inspired for your next trip, all in a relaxed and casual setting.