Sakura no Mori no Oni Gurashi

Shura was orphaned after her parents died in an unusual accident, after which she started seeing things that shouldn’t exist. She works part-time while looking for her grandfather, who told her he had been waiting in a mansion in Sakura no Mori. When she asks the police for help, they are unable to locate the place, so she seeks assistance from Tokinoseki, a demon that crosses between the living world and the spirit world. Tokinoseki was attacked by a monster, and now helps Shura search for her grandfather.