Mion is a curious young girl, being led by Lumen, the green light, and Umbra, the purple light who resides in the shadows. Awoken from a world that was left in ruins, she has wandered around its decayed landscape, being guided and assisting her journey. Other than that she is simply a young girl with two tree branches on her head, looking like antlers. She is rather careful and reserved, but she is a kind girl in heart.