An ill-fated encounter... Driven insane by the loss of his daughter and the death of Hakim, Kishimoto turned on his coworker and killed him in cold blood. After this, he used Sophie to goad Arata into a final showdown at a park in Thailand. From training camp comrades to bitter adversaries, how will this confrontationend as their two paths collide?

The fires of vengeance burn on... With Arata's battle against his former employer concluded, the situation's finally stabilizing. After careful deliberation, he decides to recruit child soldiers from Thailand's slums on Miss Li's request. Unbeknownst to Arata, while his rival company may have backed out for now, there are still those within it whose personal grudge against him won't let them rest until they've had their revenge.

The life of a private mercenary is far more grueling than he could have ever imagined! Our hero Ryouta Arata is an otaku who's just lost his job after the dissolution of his company. Unwilling to return to his old NEET ways, he applies online to a private military security company, thinking the benefits to be promising. After what appears to be a baffling test, he's assigned to be an "operator of operators" and begins his training in a foreign country.