is he possessed by a demon or something? he sound like he loves god when he was at church saying he was doing good deeds made homemade holy water and said something like " the power of Christ compels you ! " it would kind of make sense why he did that bendy trick thing and the blood came out of his mouth ( fun fact I can actually do that to its pretty easy ) - spoiler - !!!!! he should of killed the boys and fed it to the dog that would make the manga more hilarious
Brutal: Satsujin Kansatsukan no Kokuhaku