I found this little abandoned building in Kiyosato, Yamanashi Prefecture, next door to an Abandoned Pachinko Parlour.
The ground floor was obviously a small restaurant. Copper thieves had apparently been at work, judging by the holes in the ceiling and the pipe insulation strewn on the floor. The kitchen had been stripped, leaving a bare room with nothing of interest, so I didn't bother photographing it.
The establishment upstairs was obviously an Izakaya, which is a type of pub. The sign above the stairs reads:
A place where you can drink, eat, and sing
Korean Style Izakaya