The Diclonius, a mutated homo sapien that is said to be selected by God and will eventually become the destruction of mankind, possesses two horns in their heads, and has a "sixth sense" which gives it telekinetic abilities. Due to this dangerous power, they have been captured and isolated in laboratories by the government. Lucy, a young and psychotic Diclonius, manages to break free of her confines and brutally murder most of the guards in the laboratory, only to get shot in the head as she makes her escape. She survives and manages to drift along to a beach, where two teenagers named Kouta and Yuka discovers her. Having lost her memories, she was named after the only thing that she can now say, "Nyuu," and the two allow her to stay at Kouta's home. However, it appears that the evil "Lucy" is not dead just yet...

Again,I'll have to implement this warning.
WARNING : THIS ANIME / MANGA IS NOT SUITABLE FOR ALL AGES FOR IT CONTAINS MATURE CONTENT.
I won't feel so guilty if I did a warning twice and all...
Either way,I'll label this Manga / Anime under these genre.

-Horror (As in the gore.)
-Psychological
-Supernatural
-Romance
-Ecchi
-Harem(?)
-Tragedy
-Action

Time to continue the review and it's finishing touches.
Humor Content :
Well,the Anime contains only the main points,a different ending and a altered plot.So the Anime lacks humor.However,the Manga have occasional humor content so it's worth taking a look at both sides.But I don't recommend the Anime version if your unable to take too much gore,the Manga version is easier to digest to be honest.