When he was born, he and his sister were held prisoner since they were the product of a sinful love. Although his sister was rescued, he was ultimately left on his own. He was kept alive (barely) for 17 years, but has been kept a secret from the angel population the entire time. He lives all on his own in the dungeon.

When he was about 15, someone new came into the dungeon. It was a boy, about the same age as Siren. He looked at Siren as if he'd seen a ghost. Called him a name he'd never heard before. After realizing his mistake, the boy interogated Siren. Asking who he was, why he was there, that sort of thing. Siren gave what answeres he could, but they didn't seem to satisfy the boy.He introduced himself as Takeru, a knight in training. Siren was initially frightened, meeting someone so close to the man he feared most, but Takeru never did anything to harm him. Merely just sat and chatted with Siren for a while, then left. After that, Takeru would visit once a week. They would sit and chat, Takeru might sneak in some food for him, it was nice. They steadily became good friends. Even though Takeru wasn't able to visit as often the older they got, he still made time to see Siren. Even in his hell, he was happy. Then, one day, Takeru visited.. but it wasn't anything like their usual visit. Takeru told Siren he needed to escape. Before Siren could even process what Takeru was saying, Takeru handed him a cloak and ripped open the brittle cage door. Siren was hesitant to leave. This prison was all he had known his entire life. And if he left, would he ever see Takeru again? Takeru assured him that he would. He had already set up an escape route, he just needed to leave. Now. Siren agreed, and left without his friend. Now he is on his own, unsure of where to go or what to do.. but He is free.

Tsuki TenshiThe long lost sister Siren has always envied. She was taken shortly after they were born, but Siren was left behind. If he ever met her, he is sure he would hate her.

Kah Myst The monster that is holding Siren captive. Harsh and souless, he basically tortures Siren for no reason besides he thinks it's fun.

Takeru HondaThe man that rescused him from his hell, and his most precious (as well as only) friend.