Books like Fire Force, Vol. 4

finally a volume that doesn't end in the middle of an arc!i didn't really expect this arc to add much to the overarching plot but it proved me wrong and revealed a couple key pieces of information. (view spoiler)[firstly, Shinra has Adolla Burst - a pure flame that marks him as a descendent of the Sun God. and secondly, Capt. Hoshimiya was working for someone known as the Preacher who is part of a mysterious organisation that may be behind the accident that caused his mother's death and brother's disappearance. (hide spoiler)]