Fire Force manga omnibus volume 4 collects volumes 10-12 in a larger sized omnibus format and features story and art by Atsushi Ohkubo, the author of Soul Eater.

Shinra has found Shō, but his brother is working for the enemy and has no memory of his family. If Shinra wants to save Shō, he’ll have to do it by force, but can he succeed against such incredible power? The hidden secrets of the past are beginning to unravel and it seems Company 1’s captain is ready to reveal what really happened twelve years ago—if Shinra can prove his strength first! But when his pursuit of the truth may lead him to a terrible revelation, can Shinra stay true to his own resolve to always be a hero?

Fire Force manga omnibus volume 5 collects volumes 13-15 in a larger sized omnibus format and features story and art by Atsushi Ohkubo, the author of Soul Eater.

It's into the inferno as Shinra goes toe-to-toe with the formidable White-Clad, Charon! Meanwhile, the rest of Company 8 and their comrades race to protect the city from a massive Infernal outbreak. Even if Shinra is able to save the Fifth Pillar Inca from the Evangelist’s goons, will they all survive the scorching blaze?

Fire Force manga omnibus volume 6 collects volumes 16-18 in a larger sized omnibus format and features story and art by Atsushi Ohkubo, the author of Soul Eater.

Company 8 has discovered that Haijima Industries is experimenting with children to try to spark an Adolla Burst! Eager to put a stop to their deplorable practices, Shinra infiltrates their facility by agreeing to let them study his own powers. There, he's faced with a ghost from his past: Kurono, an evil pyrokinetic with twisted tendencies whose powers might be more than even this Hero can handle!