What good does feeling bad do? If you feel so bad, do something about it.

[ Just, y'know. Ideally something that doesn't get all your friends shot up. ]

You aren't Dokuwhoever. The assholes running this place thought it was funny to make themselves a Doku doll, that's all. You have his memories but you don't have to take on his debts too, okay? Your memories are never going to stitch together because they aren't real.