O castitatis lilium...

Elfen Lied -- This has definitely got to be one of the goriest, saddest and most twisted anime I've ever seen.

What is Elfen Lied?
Elfen Lied is an anime/manga created by Okamoto Rin. The story revolves around a Diclonius named Lucy who was stranded in an island inn where she washed up after being hit on the head by a sniper's bullet. The hit caused her to have split personality disorder, her other "self" was called Nyu by Kouta and Yuka - the people who found her. Nyu's appearance causes Kouta to remember events from his past that seemed to be buried so deep that he forgot about them while the lab where Lucy escaped from ordered a man-hunt for her.

What is a "Diclonius"?
A Diclonius is a mutated human. You can tell them apart from other humans because they have horns on their heads that resemble cat ears. A diclonius possesses telekinetic powers that they can use through their "vectors".

What are "Vectors"?
Vectors represent a diclonius' power. They are like invisible hands surrounding the diclonius. They seem invisible because they move at speeds that the eyes cannot keep track of.

How does this post's title relate to Elfen Lied?
The title is taken from Elfen Lied's opening song, "Lilium". It's a Latin song, btw.

Elfen Lied is not recommended for those who are under 18 and those who have weak hearts and stomach. That's because a lot of killings happen and they are represented quite graphically. Nude and torture scenes are present too. I did like Elfen Lied though. Putting the violence aside, it's a sad story, especially Nana (another diclonius) who wanted to be accepted by the man she calls her father. It's tragic too...

Which is why if you're over 18, has a strong heart and tummy, watch Elfen Lied.