That is the world where Ayakashi lives.
The sun sound doesnt shine, and there was one person Naori living in a world where there are many suspicious creatures who eat humans.

As a child Naori founds herself lost in the World of the ayakashi.She runs a bookstore with her ayakashi adoptive father, Shinonome, and meets a youth named Suimei who is bleeding and faints..

It’s fun, scary, and… a sad, ghostly story.