Hibiki Hotel

Hibiki Hotel is a pocket dimension created by Kuroninja of Earth 0 as a way to observe the Kuroninja Multiverse and do whatever he wants there without any consequences outside what takes place in the Hibiki Hotel.

Features
Hibiki Hotel is not actually a hotel, but it appears at random. Usually, the dimension appears in a place with an enchanted door. Inside is a chandelier and some elegant-looking decoration.

The only inhabitants of the Hibiki Hotel are Kuroninja of Earth 0 and his partner Kurumi Tokisaki.