Akiko Raenmal

Akiko Raenmal (あきこ ラエンマル Akiko Raenmaru) is a powerful Tenkahatei, who resides in the Makai. Periodically, she visits the human world, due to an innate fascination with humanity and because she simply loves to 'play' with humans. Notably, she is Ahatake Kurosaki's cousin, the daughter of Lamia Kurosaki's younger sibling, essentially making her part of the Tenkahatei Royal Family, alongside her younger cousin.

At first unaware of Ahatake, Akiko turned her attention to her younger cousin when she became aware of the latter having undergone a change of gender — common to many of their race, especially those of the royal family — unhappy with the possibility of a half-blood ascending to the throne.

Trivia

 * Akiko's existence carries on the trend of a red-headed girl bearing the name "Akiko" being related to Ahatake; however, unlike the Naruto and original BLEACH incarnation, this girl is not Ahatake's sibling (or half-sibling, as is usually the case), but instead his cousin. Carrying other similiarities from the original BLEACH incarnation of Ahatake and Akiko is that neither have met prior to the beginning of the story, and it is Akiko who seeks out Ahatake, though for different reasons as compared to her original incarnation.
 * Unlike the previous incarnation of Akiko from BLEACH, this Akiko is neither a Shinigami, nor does she have any relation to the notorious "Echo". She is the first incarnation of Akiko to be a "demon" (though the original Naruto incarnation of Akiko possessed "demon chakra"), and this ties in well to the demonic nature of Echo himself.