What kind of title is this?: Manga.
How many volumes are there?: 4 volumes are listed.
How many chapters are there?: 29 chapters are listed.
Where can I read it?: Reading links are listed for Official Site, Yen Press. Check availability in your region.

Synopsis

About Restaurant to Another World

By all appearances, Western Restaurant Nekoya is a normal restaurant serving normal people—but unbeknownst to the regulars, it also attracts an alternative clientele. Every Saturday, all manner of fantastical beings come to dine, and what is familiar fare to humans can be downright exotic for visitors from beyond. To these customers, Nekoya is known by a different name: Restaurant to Another World. (Source: Yen Press)

Fantasy Slice of Life