Shane

Test Subject Shane Special Agent Shane Demon Sealer Shane Ashen Blade Dancer Shane

Story
Originally a normal human, she was chosen as the subject for the experiment of strengthening the human body with demon blood. The experiment did succeed in making Shane stronger, but it had one side effect: the demon blood will take over her body one day and she will go berserk. And it did come true, but fortunately Shane already made a seal to stop the demon from taking over.