When she was 10 years old she was found not far away from the Kaio village. She was completelly naked and without a memory and without any kind of tool exept for a sword. Katuo's mother took her in and raised her as her own daughter. Though still Reona always seemed a little odd compared to all the other kids. She never wished to play together with the other children, instead she used all her free time to practice her swordfighting.

She have always been a little jealous at Katuo for some reason, yet she keep following her around and protects her no matter what happens. Maybe it's her way of being friendly, who knows? She always seem to get into fights with Soragiana and Sentan, but that's of cause what often happens as soon as she talks to another person than herself.

Many questions are in her head, though. Why was she abadoned? Who are her parents? What's with the sword that was left with her? Maybe will she find out someday..