Erenai

Princess Celeste is about to marry Prince Senya of Alastia, one of the world's most dangerous kingdoms, after She is forced into an arranged marriage in order to save her kingdom, the king bestows the true crown on his son, now wanting revenge against her father before leaving she sets the castle on fire causing a secret retaliation from her father. What happens if instead of peace it's the exact opposite? Problems arise when Erena starts a war with Alastia; But will Alastia be the one to end it?

In a world evolving with technology,economics and power spawns a mysterious and deadly disease that wipes out nearly 3/4 of the worlds human population. Not only did the disease kill off most of the human race it turns its victims into cannibalistic creatures called the "Inmortuae" who can only be defeated by cutting off their heads or destroying their hearts, also they an infections bite that can turn any living thing into one of its kind. The last remnants of humanity seek shelter in large cities surrounded by large stone walls called strongholds. Inside these structures the humans build technology which will allow them to venture beyond the walls and fight back against the Inmortuae, however this experiments include human experimentation. Tashiro Taniuchi and his two friends Yasuhiko and Erena are the result of a sick human experiment gone wrong which leaves them as a cross breed between Inmortuae and humans called Jagerinnen. due to their resiliency to the pathogens of the outside world and there natural superior strength in combat the humans use this cross-breeds as a means of striking back at the Inmortaue and uncovering the mystery behind the apocalypse they now live in. (Sidenote: Jagerinnen = German word meaning Slayers. Inmortuae = Latin word for Undead.)