I know this might sound weird considering I'm always complaining about isekai stories portraying priests as crazy pscyho-rapists, but I fell like this guy was way too willing to change his opinion.
Maybe I'm missing something (I haven't read this in a while) but the guy has spent his whole life as a priest being taught the Church's teachings and believing in God and yet after knowing the MC for a pretty short time and seeing a single person who claims she was cured of the "evil spirits" who plagued her, he 100% trusts the MC when he tells him the Church was wrong and medicine was the true answer and insatly claims that all the tortures, burning, etc were mistakes, despite having very little proof other than the Baroness and MC's word.
I mean, I would complain if he lost his shit and claimed the MC was a witch and should die too, but this seems weird to me.