Shion Hiragi is a foster child of the Hiragi family. She was also adopted by the Hisakawa family, and became her first family. With her childhood being a bloodshed, she was experienced in fighting and killing. She was once friends with Guren, Shinya, Goshi, Mito, Sayuri and Shigure. She was obsessed in protecting her family that she even forgot her priorities.But when Hyakuya Mikaela appeared, her emotions and mind was a mess. With an unknown reason, she became overprotective to Mikaela. Now, she is confused. Who should she really protect? And who is she, really? I do not own Owari no Seraph nor its characters. I only own my OCs and my ideas. Please read, vote, and comment yout thoughts and theories! Thenkiiess!

What if there were survivors who became there own army like The Moon Demon Company. They had demons as well but stronger. They have better technology. And they hid from their part of the seraph of the end project. This would be the Human Demon System in the Chinese Half Human Army. Two sisters who been side by side since they were little, work in the system.One sister named Mari Ann who was the older sister and the other was named Arosa Ann meet the Moon Demon Company and make peace. After learning each others pain and differences,Mari finds out what they were working on. And faces them to stop them from making the world worse than it is. But one thing stops her. She starts falling in love with Guren,even though she was just suppose to spy on them and kill them if necessary. But Mari hides something very dark about herself from JIDA, especially Kureto since he wants to use her for experiments. While Arosa also spies on Yuu for his strange sense of power,but starts having feelings as well. What will these Sisters do? I DO NOT OWN OWARINOSERAPH OR ITS CHARACTERS!!! I DO NOT OWN ART OR VIDEOS!!BUT some scenes in the anime will be in this fanfic book. I hope you enjoy it.....

Ayumi Hyakuya, one of the children in the Hyakuya Orphanage together with Yu and Mika. Until their peaceful days were ruined because of a virus and the vampires. How will they overcome this? (I don't own the original characters of Owari no Seraph. I only own Ayumi, my OC.)

Hello. My name is Kayana Shiona.I am neither vampire nor human Welcome to my world. Twisted,cruel,disgusting.It's hard living out here but with my power. I'm sure I won't be leaving it anytime. I do not own Seraph of the End or it's characters.

What happens when (f/n) a well know seamstress, weapons master and squad leader grows feelings for the reckless Yuu, hell bent on destroying all the vampires. All of them. . . . Can he keep his promise when he finds out (f/n)'s secret. The secret that even the Imperial Demon Army doesn't know.

What will happen when Krul's cousin comes to visit after being gone for so long? What will happen when the humans know she is back and now are ready to use her as cursed gear? The daughter of the devil himself has returned and she's about to have some fun with both humans, vampires and demons. Cover made by -Kyouka-

After finally escaping the horrors of captivity from the vampires with one other, you want revenge. You'll never forget that night... that night you won, but lost...

I suck at writing descriptions, but all you need to know is that this is an Owari no Seraph x reader story and I don't own any of the characters or the anime.

Akira is an Orphan who loves her family and thought everything was going to be okay. Until a day where humans were erased from the earth and vampires lurked. Akira was forced to become a half vampire and find her family.

(Y/n) Ichinose is a 15 year old girl and Guren's little, who joins the JIDA to get revenge on the vampires for taking away everything from her. She joins the Shinoa squad where she makes friends, but (Y/n) has a demon with a special power, and can easily take control, she has been fighting this demon almost her whole life. What if one day the demon wins this battle that has been going on for many years to come? Will she turn into a demon?