My Isekai Life: I Gained a Second Character Class and Became the Strongest Sage in the World! manga volume 5 features story by Shinkoshoto with art by Huuka Kazabana and Ponjea.

Yuji travels to a town noted for its great cuisine, but that town has been rocked by a sudden cold wave. Yuji uses his skills and slime powers to make them all the firewood they could ever need, cure a group afflicted with carbon monoxide poisoning, and generally use his knowledge of the modern world to save the town from peril. As he goes looking for any clues into the source of the mysterious cold wave, he stumbles upon something unexpected...