For Kouta and Yuka, finding the bloody naked young girl on the beach would change their lives forever, for better or for worse. Unable to speak or function as a normal human being, she is named Nyu by the duo, and taken into their home in an effort to save her. But what neither teenager knows is that this innocent young girl is actually a killing machine -- an experiment gone terribly wrong -- and it is only a matter of time before the murderer in her awakens again...
Satoshi returns to his hometown after years of being away, carrying with him terrible memories of his past. He remembers the day Satoko Kisiki joined his class – it was the rainy season, and her unusual body made her an easy target for cruel bullying, though Satoshi never took part in the mean tricks that were played on her. However, soon he found himself relentlessly chased by a mysterious and deformed girl whose long dark hair obscured her face. Was this a simple case of a joke gone too far, or was a poor, mistreated girl looking to take revenge on those who made her life miserable?
Both anime deal with bullying and the lengths characters will go to for revenge after being pushed too far.
In a post-apocalyptic future, Abel Nightroad does occasional dangerous work for the Vatican, to whom he is extremely loyal. While the apocalyptic war has long been over, humanity is still entrenched in a shadow war against the vampires. Lady Catherine, the leader of his operations group "AX," seeks to prevent a renewed full-scale conflict, but there are many forces on both sides bent towards war. As Abel and the rest of AX try to stop this, he encounters a young girl who will be the key to humanity's survival or demise. Now, Abel must not only fight for humanity, but also try to face his regrettable past...
Both Elfen Lied and Trinity Blood feature a main character who can be a sweet and innocent person who makes you smile or a blood-chilling killer who chops your head off. It's fairly rare to find someone who changes that drastically, but Abel and Nyuu both manage.
In the year 1999, Tokyo has become a battleground as the Seven Dragons of Earth and the Seven Dragons of Heaven fight to determine the fate of the world. The one with the power to decide which way the battle will go is a youth named Kamui Shirou. Will he join the Dragons of Earth and preserve the planet by ending human life, or become a Dragon of Heaven and protect humanity from ruin? The fate of all mankind lies on Kamui's unwilling shoulders as both sides clash to gain dominance. The Dragons on both sides are individuals gifted with superpowers and fated to participate in this final battle, but what end will Kamui choose?
Both Elfen Lied and X have the same kind of feeling when it comes to death. Death/murder is portrayed in a very morbid and shocking way. Also there is a hint of innocence as "Lucy" and "Kamui" both have a lack of understanding about the situation/s that they are placed in.