Japan’s post-apocalyptic wasteland replete with mud can solely be saved by one factor – fungus. Bisco Akaboshi is a wished felony and expert archer. He searches for a legendary mushroom, often called Sabikui, rumoured to devour any and all rust. Becoming a member of him on this epic saga to avoid wasting the nation is a huge crab and a younger physician, Milo Nekoyanagi. Can this unlikely trio discover the fabled fungi and save the land?
This anime is an adaptation of the journey fantasy gentle novel collection, Sabikui Bisco (Rust-eater Bisco), written by Shinji Cobkubo with illustrations by Ok Akagishi and mocha. The collection was first revealed in 2018 and is at the moment ongoing with seven volumes launched as of March 10, 2021.
Animation manufacturing is by Studio OZ with employees from ID: Invaded together with Atsushi Ikariya as director and Daisuke Mataga as assistant director, in addition to Sadayuki Murai (Knights of Sidonia) as collection composer and scriptwriter. Funimation will stream this anime premiering on January 10, 2022.