Not sure about manhwa rn but for novels, (if you are interested) the first two that comes to mind are "The baby raising a devil" and "my daddy hide his power" ^^
Spoiler......
I don't think he's brainwashed. He's just a fool for believing the saintess. He knows bro
How could he believe she is the saitness when she takes MC power
Spoiler
Nope. Not brainwashed. He's the type who sees things in black and white. Since Rabies girl is on Church side, so her actions must be justified -> is more the reasoning. I'm not even kidding.
It's not really a brainwashing but it's rather similar he was raised in thr temple since little so he was said to do all for the temple and the saint so I think all he saw was the saint orders that's all and didn't think about it....
Only in this life did he think was Ravienne orders right or not ?
Can any of you recommand something similar with depth and character development
BTW I think that khalid was brainwashed or something
And I'm 100% sure she is the real daughter because of those flashbacks when she was a baby