1] is a restaurant situated in a mundane corner of an undisclosed Tokyo shopping district which offers a lot of Japanese versions of Western dishes.

But secretly it is also open on Saturdays, as on this particular day it creates doorways to another world inhabited by elves, dragons, beastmen and other fantastic creatures, who enter the restaurant and partake of its exotic food, with many of them becoming regular patrons.

The web novel was initially serialized by Junpei Inuzuka on the user-generated content site Shōsetsuka ni Narō from January 4, 2013, onwards.

[8] A manga adaptation illustrated by Takaaki Kugatsu launched in Square Enix's Young Gangan magazine in November 2016 and ended in June 2019.

[43][44] For the occasion of Meat Day (二九の日, niku no hi),[48] the Master serves free pork soup with the regular meals, which quickly gains the praise of the guests.

He learns to his surprise that Yomi, his lost comrade-in-arms, was not killed in their battle against the demon god, but wound up on Earth and that the current Master is her grandson.