Rust-Eater Bisco 5 Dai Kaiju Hokkaido Shoku Rikusu

is the fifth volume of the Rust-Eater Bisco light novel series, written by Shinji Cobkubo and Illustrated by Akagishi K. It was released under the Dengeki Bunko Imprint in December 2019.

Synopsis
Hokkaido, a biological weapon that swallows the earth. Before that, the one who stood in the way was the unsightly red-haired-children, "Don't treat me as a kid!" In order to save the northern land eroded by flowers and regain the original body, a fuss up and down in search of the mysterious mushroom that sleeps in the back. However, his beloved disciple, Shishi, the king of Benibishi, who turned Bisco into a child, stands in the way. Can they stop the runaway of the marine mammals !? The strongest mushroom protection combination runs around the "body" of Hokkaido covered with mad flowers!

(source: Dengeki Bunko Official Website - Translated)

Characters

 * Bisco Akaboshi
 * Milo Nekoyanagi
 * Paw Nekoyanagi
 * Chiroru Oochagama