Fire Force Manga Box Set 1 contains volumes 1-6 which feature story and art by Atsushi Ohkubo, the author of Soul Eater.

In the year 198 of the Solar Era, the city of Tokyo is plagued by a deadly phenomenon: spontaneous human combustion! The only ones who can stop it are the Fire Force, a team of specialized firefighters. Shinra, a young man blessed with the ability to ignite his feet and travel at the speed of a rocket, wants nothing more than to be a hero, and knows that this is the place for him! He joins the company at Special Fire Cathedral 8, a team tasked with discovering the source of this strange epidemic. But many obstacles stand in their way, and there are secrets haunting Shinra's past…