A young Arboranger who ran away from home and now lives in the Main Beacon, often helping others. She is gentle, kind, and enthusiastic. She seems to have a strong interest in science, technology and the knowledge of ancient Illuminator civilization, and when it comes to related topics, she talks endlessly. In order to change her older sister's disaproval and attitude towards herself, Genia Cold embarked on a solitary journey to seek knowledge from the Sage Noxistasia Shade, wanting to learn ancient technology and eventually become a technical officer of Light Pollution. Also, she created Fabrica with Noxistasia's help.