LOOK AT HOW GORGEOUS THE COVER FOR THE MONONOKE MYSTERY NOVEL IS !!!!!
EDIT: Added LQ images from Teniwoha’s twitter of more illustrations from the novel! The first one is Harutari and ??? (flowers and color scheme looks liks Joro-gumo?) and the second one is of Yahito and Misago from the rental bookstore that Yahito goes to. She makes an appearance in chapter 2 of the manga.
The novel also now has a page on Mediafactory’s website.