“Welcome to Western Restaurant Nekoya!” Western Restaurant Nekoya, the restaurant where Aletta and Kuro work, is identifiable by its sign with a picture of a cat on it. At first glance, it looks like the kind of restaurant you’d find anywhere in Japan, but once every seven days, on the Day of Satur, its door leads to one of several spots in a parallel world. Through this door, a variety of customers come from this parallel world to dine on exquisite cuisine before returning home.

This is the story of all the unique visitors to the restaurant, the delicious food it serves, and the once-in-a-lifetime encounters that occur there. The door once again leads to warm, friendly new meetings.