Sin-
Sin is what the church calls a "devil". He was born of an Angel and a Demon. He is called the greatest sin. He is wanted dead by heaven, and hell wants him for the next revolution.
He is 17 years of age, and was dragged down to hell shortly after his demonic powers awoken in him,this happened at the age of eight. Sin is placed with two marks of a sinner. His white streak in his hair, and a symbol on his back.
Minora- Sin was adopted into Sin's family. Her, Koi, and Sin are all like family. Minora is sixteen, and has traits of a fallen angel, but bears no mark of a sinner. So she may be an angelic human, nobody really knows what she is.
She took a liking to Koi, even though he was a "Devil" also. She works for the church as a holy worker. She is an exorcist, and a holy mage. She uses prayer to heal people, and to kill "devils" Imbedded in her is a peice of Koi's life. And if Minora dies, Koi follows behind her. This was done by the priest of her chruch, to make sure Koi won't turn on her.
Koi-
Koi is another "devil". He grew up with Sin and Minora. He is not liked threw out the church, for him being a "devil". Minora risked her life, for koi's back when he was little. She traded half of her life, with koi and took half of his. Therefore if either of them died, the other would parish. And with Minora being a questionable angel, They won't touch koi.
Koi has bleach white hair, and very dark skin. He covers his left eye at all times, for it holds a secret behind it. It is said to see death...but it might just be a fashion statement.
Sister Caroline-
Sister Caroline was the one who adopted Sin, Koi, and Minora. She is looked down upon for adopting 2 "devils" and a possible "angel". She is blind in both of her eyes, and is placed with a mark of a sinner. She claims that Sin's father gave it to her right after she accepted Sin as a son. She became a nun for the church, and later became the leader of it.
Not much is known about Sister Caroline. She keeps herself locked in her office, and does paper work for the church, and researches for the next mission to send Minora on.
Nameless-
This is Sin's Father.He lost his name, and his title. He fell in love with an angel, and had a child, which is thed worst sin immaginable. For this sin, they sow'd his mouth shut, and carved out his eyes. Nameless come up from hell when sin's demonic powers fully awaken, and takes sin b ack to help to keep a closer eye on him.
Even though he has no eyes, and his mouth is sown shut with angelic fibers, he can still talk, and see. He uses telepathic messages to talk, and he can only see auras. Meaning, he can only see an angel, or a demon, and can not see a human.