Otherside Picnic: Novel Omnibus Volume 1 was written by Iori Miyazawa with illustrations by shirakaba and contains volumes 1-2.

Sorawo Kamikoshi's first encounter with Toriko Nishina was on the Otherside, after seeing something otherwordly and nearly dying. Ever since that day, Sorawo's life as an exhausted university student changed forever. In the Otherside, a place where internet urban legends become real, dangerous beings like the Kunekune and Hasshaku-sama appear--despite only being spoken of in ghost stories on the internet. Toriko and Sorawo set foot into this abnormal world for research, for profit--and to find a missing person that is near and dear to someone's heart. A tale of two girls' bizarre exploration and survival, brought to you by an up-and-coming sci-fi author!

Otherside Picnic: Novel Omnibus Volume 2 was written by Iori Miyazawa with illustrations by shirakaba and contains volumes 3-4.

Autumn has arrived. Having narrowly avoided the curse of the Kotoribako, Sorawo and Toriko are back to exploring the other world. With boxed lunches in tow, the two take their agricultural vehicle for a leisurely drive across grassy terrain, deal with the problems caused by Sorawo's kouhai at university, and hang out at cognitive scientist Kozakura's house.

Naturally, bizarre entities and Satsuki Uruma's shadow are watching their every move. Sorawo prepares for more adventures with Toriko, but the most terrifying of threats is silently closing in on them. Not to mention the fact that it seems there's something Toriko needs to tell Sorawo...

There's no turning back now—a whirlwind of bizarre exploration and survival is upon them! Don’t miss the second collection of this girls' tale of survival, where feelings they can't show each other collide!

Otherside Picnic: Novel Omnibus Volume 3 was written by Iori Miyazawa with illustrations by shirakaba and contains volumes 5-6.

Sorawo and Toriko have been spending their days surrounded by the supernatural. They managed to successfully spend a night together in the Otherside and can now venture even deeper! As they go back and forth between the normal and abnormal, they continue to encounter even more strange events...

The two discover a mysterious lady living in a mansion in the Otherside, go searching for a missing man named Abarato, run into Hasshaku-sama yet again, and...some of Sorawo’s memories begin to mysteriously vanish?!