Sen is a rough young woman, not really too smart, but very sarcastic. She has been through a lot during her life. As a child, for years, all she can remember was being in a chamber having needles stuck in her, striking painful sensations, and blurred visions of a woman. It finally ended one day when she woke up in a nice house at the age of 6. She had a brother, and parents, a nice bed to sleep in, she was enrolled in a school, and had a good friend. Was it all just a crazy nightmare?This somewhat good life went on for a long time until one day, at the age of 14, on her way to the park from school, she was kidnapped. Again, these terrible feelings, the same blurred visions.... It wasn't a nightmare. After a few days of torture, she was thrown on the side of her house where her brother found her. But she was different... Cold.... Not the same Sen he grew up with. He asked her questions, "where were you?" "what's going on?" "what happened to your eyes?" All she could say was "leave me alone." He noticed her voice wasn't the same. He backed off, but he cared too much to just sit by and watch his sister go through this hard time alone. He made the terrible mistake of trying to comfort her. He touched her shoulder and she turned around to face him. Her eyes, golden.She blacks out.When she comes to, she sees her brother lying in a pool of water. Pale as if he'd drowned. Had she done this? She heard her mom rushing to the room and climbed out of the window. She knew they would blame her. "That DEMON!" she hears her mom say in agony as she's running into the woods.For years all she could do was run, kill, and hide. She ends up finding a shack in a relatively quiet area. Nobody could find her there. She makes a home for herself and lives there.
A couple of years later, it appears as if the ridders have found her. She begins getting knocks on the door, death threats, and battles. This goes on until the present. She is now 23 years old. She finally gets sick of it. Losing all hope and grip on humanity, she vows to become the monster everyone wants her to be.... Until one day an unprepared demon ridder named Jagen sees more in her heart than she thought she had left.