To explain the killer was one of the priest past orphans and due to injuries or a sickness the priest put him on medication that basically made the killer go mad from addiction later on due to his connections ( the priest basically sells off his orphans to people in power for the churchs advantage) he was able to save him from his sentence and seems to care for him though a little confused if it’s romantic or just Caring for him as a son but seeing as he is quick to sell away his kids I doubt it’s actual parental love
Thanks for explaining, it's very kind of you. Personally I don't think both of them didn't have any romantically involved with each other, I mean they are fasinated by each other for sure.One is psychopath and the other is pure evil ..(that's why I'm interested into these characters)I don't think this story about romantic at all but again I don't know what the story goes on so

I'm really into psychological thriller genre and I think the characters are interesing but I'm confuse right now. What did the priest want? Why he saved the killer?(How the hell he save him from the death sentence ?) Does he want to use/control him(killer)? I don't know what the story goes on anymore lol