Reis is a fairy, the second daughter of a Fairy chief deep within the forest. As a child, she ran away from home due to a fight with her siblings and parents. That's when she met Ruthis, a boy struggling to survive in the harsh conditions of the world. The two would later grow up together, forming a team when they started adventuring. Reis may be much older chronologically, but she's still a bit of a child at times. However, she isn't naive, and is aware of things that Ruthis more than likely can't tell.

Her voice is a bit high pitched, but normal.