saw the devil walking in the daylight (but he didn’t see me)
The Golden Guard has been raised in the Titan's image all his life. He has always striven to fulfill His will, as told by His Mouthpiece, his uncle. Life has not been easy, but he's never expected it to be when following the righteous path.
And then he and his uncle are captured. Separated from Belos, the Golden Guard will do whatever it takes to free him so they can return to fulfilling the Titan's will—even if it means playing along with a "therapist" and giving himself a "name" and attempting to make "friends;" he'll do whatever it takes to get their guards down.
The only problem with this plan is that he wasn't expecting to like going along with his captors.
[Or, another Hunter-is-raised-in-a-cult-and-then-gets-rescued-while-Belos-goes-behind-bars AU, except this time the cult is in the Demon Realm.]