A spin-off, Mountain of Giant Insects, illustrated by Yusuke Sazanami, was published in Dokodemo Young Champion from November 2019 to August 2024.

They overcome their fears and insecurities, shedding their former high school cliques to work as a team and escape the island before it is too late.

As they approach the end of their journey, the students face one final, harrowing challenge: a colossal Queen insect with overwhelming strength and intellect that threatens their survival.

The Island of Giant Insects is written by Yasutaka Fujimi [ja], and first illustrated by the duo Redice and later by Shu Hirose.

[13] A spin-off, Mountain of Giant Insects (巨蟲山脈, Kyochū Sanmyaku), illustrated by Yusuke Sazanami, was published on Akita Shoten's Dokodemo Young Champion web magazine from November 5, 2019, to August 27, 2024.

[16][17][18] An original animation DVD (OAD) adaptation produced by Passione was bundled with the manga's sixth volume, released on June 20, 2019.

[1] It was directed by Takeo Takahashi and Naoyuki Tatsuwa, written by Shigeru Morita, and features character designs by Takayuki Noguchi.