Akane Sano

Akane Sano is Keita's childhood friend, who has romantic feelings toward him. Her Doppeliner is Reishin's partner, Yuki Kaionji. In the anime, she is later to be revealed to be Reishin's contractee after the Holy Land appeared, and also known to be the ultimate Master Root.

Akane is married to Keita in the final episode, changing her name to Akane Ibuki.