This game takes place at the Social Welfare Agency, a place for children with severe injuries to be given rehabilitation, another chance at life.
In truth, the Social Welfare Agency deals in cutting-edge cyborg technology, bringing people back from the edge of the grave. But it only works with children, and even then, it doesn't work properly. It's still new, it's still alpha. But the cyborgs work, and wonderfully so. Children are a great cover, as nobody suspects them.
But they can't work on their own... A necessary part of the process involves "conditioning", a technique to subdue the brain's hostile responses to the cybernetics, to battle, and to sharpen their senses and reactions. A side-effect of this is they're generally a bit unstable. To offset that, a certain amount of devotion to their "handler" is instilled, giving them a foundation they can rely on. And ensuring they're controllable tools...
Ostensibly, the Agency's mission is to preserve peace, deploying these superhuman weapons to counter terrorism threats. In truth, a terrorist is just as often someone inconvenient to the government. Best not to question it too much. Handlers, you're here to accrue favours. Cyborgs, you're here to follow orders.