Hypothetical Question. You kidnap Christian, lure him into a room, and just tell him the merge is BS. Keep him away from the internet, keep him fed, but constantly bombard him with normal conversations for several hours a day, shooting down his logic, explaining he doesn't have powers. He's allowed 3 meals a day, 1 of them unhealthy, 2 balanced, a shower every day, and a console without online features plus a few games, books, and lego. Go Oldboy for 30 days, but every day explain he's talking rubbish, nobody believes him, and he has no powers, and the only way he can escape is if he uses his powers, or consistently admits he's talking crap. Privileges and the unhealthy meal can be revoked if he turns violent.
How would he react?