I'm a Catholic too and I read yaoi a lot. It's great to know that you are in here and I like your comment. There's another manga almost like this one and surprisingly I like the way Jesus was portrayed in it.
i dunno, i would say that this is the perfect manga for someone who has grown within the religion but has become a religious critic (and yaoi fan) because anyone who has grown up studying chrisitianity and actually analyzed it can see how the flaws in christianity were really cleverly played into this manga (ie: the will of god, the fidelity/rebellion/fall of the angels, the hierarchy, etc). there were a few small bumps that weren't thoroughly explained, but beyond that it was a great reframing of christian texts to a yaoi theme. i would suggest this is not for overly-zealous and *unquestioning* christians.
This manga was hands down, emotional and beautiful, that's true. But it is not for the heavily religious people in Mangago. It has twisted and altered the story of the angel, demons, and Jesus for obvious reasons. One it is fiction (which we should be reminded of), secondly it's yaoi. I'm Catholic myself, and I read yaoi with no judgement, as a matter of fact I love them! Innocent Bird is not for the overly religious people. But setting religion aside this manga was phenomenal, it had inspiring moments, and true questions that people would ask. It showed something that not a lot of yaoi manga would do, which is again, religion. Despite religion opposing gays and all that jazz, this manga made it "work" somehow, it also pieced things together quite nicely without offending anybody; they didn't insult any religion or any aspect of it as far as I was concerned. So to me this manga was good in my book! (Overall Kingly Score: 5/5)