Fire Force manga volume 12 features story and art by Atsushi Ohkubo.

Shinra has experienced another Adolla Link, but this time it has allowed a mysterious girl known as the “First Pillar” to take over his mind. He claims to have given up on being a hero and now wants nothing but revenge. Can Arthur bring Shinra back to his senses, or will the Knight King have to slay his old rival?