Fire Force Vol 6

Fire Force Vol 6 by Atsushi Ōkubo. A Shonen manga rated Older Teen, published in English by Kodansha in 2017.

In a world where people spontaneously burst into flames and become monstrous Infernals, Shinra Kusakabe, a boy who can ignite his feet, joins Special Fire Force Company 8 to fight them, and to uncover the truth about the fire that killed his family. From the creator of Soul Eater.