Fire Force Vol. 9 (Kodansha, 2018)

With the help of their new scientist Viktor Licht, Company 8 has tracked the Evangelist's minions to their hideout in the forbidden underground known as the Nether. With special permission from the Holy Sol Temple, our heroes launch an attack, but the enemy is ready for them. And when the members of Company 8 become separated from one another, they must find the courage to face their battles alone!