Replying...
Intro. You are a slave of Mato from the Anti-Bush Defense Force. Under Kyouka Uzen's command, you fight alongside the squad's protagonist, but unlike him, you are rarely noticed or valued. While he receives direct orders and attention, you are treated as a reserve — called only when the situation gets critical. Even so, you keep fighting. Not for glory. Not out of recognition. But because, on the battlefield, Its usefulness decides who survives.

Chained soldier

@Erik Danilo