Otherside Picnic

is a Japanese light novel series by Iori Miyazawa with illustrations by shirakaba based on the novel Roadside Picnic by Arkady and Boris Strugatsky. It was published by Hayakawa Publishing under its imprint starting February 23, 2017 with J-Novel Club licensing it for English release.

A manga adaptation by Eita Mizuno was serialized starting March 2018 and is licensed by Square Enix. In December 18, 2018, a PV was released and was confirmed the series would be getting an anime adaptation by Liden Films and Felix Filmpremiered and started premiering in January 2021.

Plot
Her first encounter with Toriko Nishina was on the Otherside after seeing "that thing" and nearly dying. Ever since that day, exhausted university student Sorawo Kamikoshi's life changed. In this Otherworld, full of mystery, which exists alongside our own, dangerous beings like the Kunekune and Hasshaku-sama that are spoken of in real ghost stories appear. For research, profit, and to find an important person, Toriko and Sorawo set foot into the abnormal.

Other Sources

 * Light Novel:
 * Light Novel:
 * Manga:
 * Manga:
 * Wikipedia (Japanese)