Junpei Inuzuka: 3 books

In Tokyo lies a small restaurant called "Western Cuisine Nekoya," ordinary in every way--save one. Every Saturday, its door connects to another world! Follow along as a cavalcade of curious guests from half-elves to samurai, dragons, halflings and vampires enter its premises, all with the same goal in mind: to fill their stomachs with the most mouth-watering of foods.

"Western Cuisine Nekoya" has acquired a peculiar new employee in the form of a young demon girl named Aletta, a denizen of the other world. But this restaurant to another world doesn't interrupt service for anything, and so, as the regular customers--and some new ones--start streaming in, Aletta's just going to have to learn on the job!

Behind a magical door that connects our world to another is a strange little restaurant known as "Western Cuisine Nekoya," which serves up an array of delicious dishes. But which is the tastiest of them all? The debate has raged for thirty years without consensus, and continues to do so as the bell rings each Saturday and the customers flood in.