Violence: Lots of fantasy violence. There is some real-world violence, such as stabbing and explosions. A couple of instances imply characters have exploded. Blood is shown everywhere. There is a lot of death. I think most of the cast ends up dead or traumatized, but I don't think the violence was particularly graphic (it is supposed to be toned down significantly from the manga, though).

Sex and Nudity: There is some non-sexual barbie-doll nudity. One character spends a lot of time in bed, nude, though fully covered, with the exception of her back. She talks frequently to a male character in this state. There are some scenes that are vague enough to potentially imply sex, though it could easily be more innocent than it appears to be. A character is heavily implied prostitute and is frequently shown in lingeree.

Theological Themes: It's basically about the apocalypse and the end of the world. The dragons are fighting to determine whether or not the world as we know it ends. The Dragons of Heaven want to preserve the world as they know it, while the Dragons of Earth want to eradicate everything and start over. There is a lot of prophecy, telepathy, and magical powers. Most of the characters live in shrines. There is a lot of pentagram imagery. There is dream-seeing, and there is a vague afterlife.

Problematic Themes: I think there was mild swearing at appropriate times.

Overall: I had high expectations for this series. I like battle royales with magical powers and I enjoyed the other CLAMP titles I enjoyed. However, I kind of found X to be boring. I do have hope for the manga, since it seems to be a bit longer, which would smooth out some of the issues I had.

There were too many characters, and all the ones I liked and found interesting were the first to die. The ones I didn't care about at all (some I outright hated) got to live a bit longer. Not all of them got development, but I am fond of the ones that did. My personal favorites were Yuto, Satsuki, Karen, Aoki, and Subaru.

The romance was really bad and forced (I could write an entire essay about Yuzuriha and Kusanagi's relationship), though I did like most of the backstories (at least the ones that made sense and built on the characters). It definitely made me want to read its prequel, Tokyo Babylon, which is where Subaru and Seishirou come from. They were very interesting and I would have loved to learn more.

I loved the end of the world battle royale concept which was introduced. It is a fascinating concept to build the story on, and I thought the story would have worked better had it been longer.

The art was not CLAMP's best. Kamui and Yuzuriha's designs drove me insane. For the former it was the odd body proportions (that waist) and the latter it was the hideous hair cut. I did like some of the other designs, like Karen and Subaru's.

Don't get me wrong, it was a fine show, especially considering we don't get much action shoujo animated, aside from the magical girl genre. It just failed to leave much of an impression on me, though it does have a lot of potential.

I'd say teenagers and older for this one, though I understand the manga is more intense and probably warrants an older age rating.