One of the few people who know I's real name.
Magokoro has long orange hair, tied in braids. She has orange eyes, and big eyebrows. She wears a short black yukata with flame and firework patterns, tiend with a white obi with flames and a sun on it. She has a black kitsune mask with an orange sun on it that usually obscures her face.
Another outfit of hers is a black maid outfit and a white apron with red flames on it.
In Takashi Saitou's experiment to create the strongest human, after Jun Aikawa was deemed a failed project, his colleagues continued the project and created Magokoro.
While at the ER3 System, several experiments were conducted on her, and her body was set on fire.