A sci-fi/fantasy novel series authored by Miyazawa Iori, with a manga illustrated by [[Mizuno Eita]]. A Winter 2021 anime was produced by Liden Films and Felix Film.

The premise involves a pair of university students, [[Kamikoshi Sorawo]] and [[Nishina Toriko]], exploring a parallel world known as the Otherside, where various entities based on [[urban_legend|urban legends]] and folklore can be found.
裏世界ピクニック otherside_picnic