A member of the K’uminhyō species with an all-encompassing dominion over light. The primary form she takes is of a pink nine-tailed kitsune, although she has many other forms. Because of the nature of her abilities, she has a cruel fascination with human eyes due to their light-collecting nature. This fascination has led her to taking the eyes of humans that she finds alluring as trophies and turning them into crystalline wind chimes within her temple on Remina.
Long ago, Ninko resided primarily in Japan, and as such was worshipped as a Kami. Offerings of fresh bodies would be made and she would take their eyes and livers in exchange for the total protection of the area around Mt. Hōei.
Lumina is her chosen avatar, acting as a vessel for her light powers- in exchange for an eye that Ninko found particularly beautiful. This beauty Ninko saw was due to their unique color, a deep green very uncommon for humans from Earth-B12. However, this exchange was not as smooth as Lumina expected it would be- not only would the gaping wound it left not heal, but as time continued it became clearer and clearer her entire body was now cursed.