Forgiveness

Fin Fish is one of Maron's closest friends and the two are very dependant upon each other. When Maron refused to turn into Jeanne in the beginning, Fin even offered Maron the reward of a wish when all the chess pieces were collected.

The two are very close, and Fin even tries to take over household chores in order to seem more like a mother to Maron, since she knows how much Maron misses her parents. Fin is also very concerned about Maron's relationship with Chiaki and warns her time and time again that Sinbad and Access are enemies and are working for Maou.

However, it is revealed the Fin herself is the one working for Maou and her mission was to get close to Maron, take the power of the sealed demons back to Maou and to hurt Maron deeply by betraying her and leaving her alone. Fin follows these plans, even though she had grown to like Maron, because of the fact that the body that Maou gave her after she was banished from heaven, is the only thing keeping her alive.

Fin was kicked out of heaven because, on her mission to earth, she used her powers and ended up killing a lot of humans. While she was alive on earth, Fin used to be a priestess with various powers, but her brother was very greedy and wanted to use her powers to make money and become famous. So he killed his sister, Fin, and encased her body in ice, because her body itself gave off those same powers.

Because Fin was so pure hearted when she was alive, she was sent to heaven to become an angel. But, when Fin first became an angel she didn't remember any of this and during her trip to earth, was found by the man who used to be her brother. They talked for a while and she told him about how angel's hair had powers. But as she was exploring the shrine that she was staying at, she found her body (and the bodies of the two angels that came to earth with her) and remembered everything.

Her brother caught her again and decided to put on a show for visitors by demonstrating the powers of her angel's hair. So he hacked off her hair but because her heart was in such turmoil she was unable to control the power that was released and everyone in the vicinty died.

Because she killed humans, she was sentenced to exhile from heaven, but she and Access had made a promise to talk and she didn't want to break that promise and was scared of disappearing. So when Maou offered her a place to stay at and a body in exchange for her services, she accepted. But with her new body she wasn't about to even touch Access without hurting him.

Fin finally admitted that she loved access and she didn't hate Maron, but Maou found out and took his body back, making Fin have no where to go. But Kami decided to forgive Fin and let her become an angel again. But during Maron's final battle with Maou, Fin used herself to shield Maron and ended up dying again. She and Access made a promise though, to find each other once they were both reincarnated back on earth.