Joutaihenka Manga vol. 4 ~Umareta mama no Sugata de~ | Transformation Comics Vol. 4 ~In Their Natural Born Figure~
(C86) Hataraki Sugite Kowareta Komachi ga Eiki-sama ni Gyakushuu suru Hon | A book in which Komachi, broken from overwork, retaliates against Eiki-sama. (Touhou Project)