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.
The supernatural tales of two female individuals trying to go about their every day lives while relying on a seemingly weaker male character is what you get in both Tsukihime and Elfin Lied. The reader will uncover the mysteries of the characters past seeing how it will effect their relationships in the future.
Tate Yuuichi has just transferred to Fuka Academy and is thrilled at the prospect of living in a normal co-ed environment. Little did he know that he enrolled in a school where all-out battles between female students are nothing out of the ordinary! On his first day Tate unwittingly stumbles into the middle of a fight between Mai and Natsuki – two of the ‘HIMEs’, a group of specially selected and powerful girls recruited to fight monsters known as Orphans. While the HIMEs themselves are strong, they can only unlock their true power when they partner up with their ‘Key’. Unluckily for Tate he finds that he is not only the Key for Mai but also Natsuki! Now Tate is entering a world of monsters, battles and even rival HIME groups, but that’s only the start of his troubles…
With the supernatural scene playing a huge part in the everyday lives of the main characters in My-Hime and Tsukihime who are just trying to go to school and live out their days. The mysteries surrounding them unfolds into action packed battles and choices they do not know if they want to make.
Sola and Tsukihime both have male protagonists in the series trying to help out the main female character, who has a unnatural ability. The heroes try and protect that female character from the things that are after them, creating chaos and drama. Both series have a sense of romance between the main characters.