Ayakashi Senmon Enkiriya Kagami no Mamorite to Suzume no Shikigami

Hiyori, who has moved into her great-aunt's house for some reason, one day finds a Shikigami named Seiji in the bamboo grove around the house. Hiyori ends up helping out her great-aunt, who runs a divorce agency, but this leads to a connection with her late great-grandfather...!? (Source: KADOKAWA, translated)