Otherside Picnic Vol. 4 (Light Novel)

Sorao Kamikoshi and Toriko Nishina are two university students who one day discover doors leading to a mysterious alternate world called the Otherside where fabled monsters from scary stories actually exist. In search of an important person they glimpsed there, the girls arm themselves and journey into the strange world of the Otherside in this story of survival, exploration, and mystery written by Iori Miyazawa and illustrated by shirakaba.
In Vol. 4, Sorao and Toriko head to the former base of the cult of Satsuki Uruma that previously attacked them. Though the allure to explore the Otherside remains ever present, the girls are unaware that a terrifying threat is closing in on them…
Notice: This light novel is written in Japanese.