Kaii to Otome to Kamikakushi

Summary

Sumireko Ogawa’s dream of becoming a novelist is reinvigorated with new rumors of mystical incidents. Now a clerk at a bookstore, she enlists her young coworker, Ren Adashino, to investigate urban legends, black magic, and ghost stories across the city. Sumireko has a knack for triggering magical events, and Ren has a dark secret of his own. Will they survive their investigation unscathed?

(Source: Crunchyroll)