Ceres: Celestial Legend and Blood + have twins that have hidden secrets in their past. The heroines of the story do not know what that past is and have to go on a kind of mission or quest to find out how they came to be there. Their dark secrets have to come to light.
In a land overrun by yoma - monsters that feed upon human innards and take on the appearance and memories of their victims - humans are little more than cattle awaiting slaughter. The only opposition to the yoma is The Organization, a group led by a council of mysterious men who send out their all-female warriors (known as claymores) to do their bidding. However, The Organization is not charitable; a town must pay an exorbitant fee for their services. Likewise, many of the claymores care little for those who they protect. Clare, the lowest ranked claymore, lives only so that she may one day avenge her mentor.
The series Blood + and Claymore involve strong female leads that are aloof and cold up front but display tender moments in them. Each takes part in slaying the demons of the world but also have to look within themselves to control their own demons. Both have a fantasy like quality to them.
Some time ago, a scientist carried out a terrible experiment, infecting people with seeds that turned them into dangerous Black Roses. It is the job of the Crimson Bullet Association to hunt down these foes, led in part by Claudia, a girl with the power of the deadly Roses. But when the organization is seemingly betrayed by Claudia's protector, Xeno, she must get to the bottom of what's really going on.
Power corrupts, and absolute power corrupts absolutely. Top-ranked student Yagami Light is disenchanted with the world around him. Through a series of events, he comes into possession of the ultimate power over life and death: a supernatural "death note" which can kill nearly anyone at his whim. As Light sets off on a crusade-turned-killing-spree, investigators from a police task force try to stop the mysterious deaths - including Light's own father, a senior policeman.
The concept of death is a key factor in both Blood + and Death Note, death is an inevitable thing for everyone and both these series explore the good and evil sides about it. The outcome is likely to be the same yet the perspectives are entirely different.
In the near future, some girls are born mutated. Known as Diclonius, this new species is believed to have been chosen by God to wipe out mankind. Unlike regular humans, Diclonius have two horns on their head and ‘vectors' - invisible ‘hands.' Contained within a research facility unknown to the world, the Diclonius are experimented upon mercilessly; many die or develop a hate for mankind. One such creature, Lucy, is said to be the first of the Diclonius. She escapes from the facility, but while fleeing she takes a bullet to the head and is seemingly killed. However, it seems Lucy isn't quite dead yet; she's instead developed an alternate personality called Nyuu. She's washed up on a shore where two people, Kouta and Yuka, find her and bring her home, unaware that such a monster still lurks within Nyuu.
Blood+ and Elfen Lied have female heroines that take part in a battle not only with the demons around them but also within themselves trying to figure out who they really are. They are not humans but are trying to take place and live in a humane world in which the lines of what is right and wrong are tested. Both series deal with a great deal of violence and questions about humanity as a whole and the ideals humans’ represent. Both deal with hardships of the main characters and tests the powers of each individual.