Fire Force Omnibus 2 (Vol. 4 - 6)

(W/A/CA) Atsushi Ohkubo. Shinra has discovered that someone is using a bug to turn people into Infernals. He's narrowed the suspects down to two* and now he must figure out which one is the real culprit. Can he find out who is friend and who is foe without first getting caught himself? Includes volumes 4-6.