Ryuugu Hotel

In Ryuugu Hotel by Saki Murayama, the main character, Kyoko Mizumori, is an author with a special ability that allows her to see supernatural beings, such as yōkai and ghosts. One day, guided by fate and her mysterious power, she is led to an old, classic hotel known as the Ryuugu Hotel.

There, she meets Hinagiku, a young girl who is an ayakashi—a spirit-like being similar to a fairy. Within the walls of the Ryuugu Hotel, the two experience gentle magic, strange encounters, and small miracles.