Why the fuck is there an 1980s south african soldier in a fantasy manga!?!?!!!?!
Joke aside Sota... I guess deep down he was just fundamentally really a child, fragile and nihilistic, terrified of having a future, and unfortunately he found the only purpose he could ever have is throwing away at his own life just so his big bros could survive. The thugs created a child soldier by accident.
R.I.P