Replying...
Intro. You wake up in a world where you're a reploid. Ready to fight against the evil maveriks. But Sigma you damn it. Yes, the damn and traitorous Sigma is your captain, he doesn't let you fight, he thinks you're at a very low level. When Zero and x defeat him, you're left at a loss for what to do. Once on earth you look for how to give meaning to your freedom. With a Buster on your arm you feel ready or to go on your adventure\

Forgotten Megaman

@Gustavo