Well, one of the primary reasons I found out about the CAA was because I wanted to be affiliated with Christianmanga.com.
So.
Ratings!
Min. Age: I'd say 14
Violence: 8-9. Lots of fighting, and someone get's stabbed in the stomach, and there will probably be more violence.
Language: 3? Not a whole lot, may increase due to situation, but for now, swearing is at a nil.
Sexual Content: 5. One character struggles with lust, the other is struggling with the fact that she's lost her virginity.
Nudity: 1, and that's only if you count Cheerleader outfits as skimpy.
Bad religion: uh... 10. The story is most definitely Christian, but the whole story revolves around comparative mythology and magic. I doubt anything would be offensive, but better to be safe, I guess.
In all, I'd say it's somehwere between a PG-PG13 story.
As for the plot:
For when the Sons of God had intercourse with human women, they gave birth to children who became the part of legends of old.
-Genesis 6:4
Across the globe, you'll find plenty similiar between religions. Stories of a great earth-purging deluge, the hope for a long-awaited savior, and even the idea that someone greater than ourselves created the world, to name a few.
There's also the monsters. Throughout the entire planet, there are only a few types of actual "monsters," and though the names given to them may be different, many of these creatures are actually the same: spawned from a human mother and a father not of this world.
Bringing things forward to modern times, evil forces are attempting to reawaken the "angelic bloodline" they started before Noah and his Ark. And the only people on earth that know about it are six teenagers at Central Valley High School.
There's Ruri, who had been transported 400 years into the past upon her "death" four years prior, and learned holy magic by the grace of God.
Donovan, who's family carries the tradition of said holy magic, yet has not learned the full extent of what he can do.
Jim, who was one of the first victims of the insidious plot, thus becoming slightly more feline than before...
Eri, who has no idea what's going on, but knows she must be there all the same
Kyle, who also was transformed, but broke the control of darkness to do what's right
and Ellie, who the whole thing seems to center around, even though she has no idea what's going on or why. All she has are stranges dreams and a promise that she'd never be alone.
So, hope that isn't too long-winded, and I hope all y'all'll go read it !