Bakemono-tachi ga Usobuku Koro ni: Bakemono-hime no Katei Kyoushi (Volume)

is the first volume of the Bakemono-tachi ga Usobuku Koro ni: Bakemono-hime no Katei Kyoushi light novel series, written by Ryukishi07 and Illustrated by Shigeo Hamashina. It was released under the Dengeki Bunko Imprint in October 2020.

Synopsis
"Ichiichi, it's a proof of my love for the same monsters and what I have. Eat." That said, it was a human "Harawata" that she pushed out. Late summer of 1950. A young man, Ichiichi Shiozawa, who visited the village as a tutor of a famous daughter. What he saw there was the appearance of Marika Neck, a beautiful "bakemono" who devoured the corpse. Is the transformation of the graceful daughter sick or is it due to haunting ...? A series of disappearances of girls that occurred at the same time. The characteristics of the disappeared person match the "it" I saw in Marika's room ... The tutor of Princess Bakemono, Isoichi Shiozawa, solves all the mysteries-- !!

(source: Dengeki Bunko Official Website - Translated)