Nagisa

Nagisa (渚, Nagisa) is a mysterious demon working under the Black Katanas. Despite their alignment, they don't agree with many of the Black Katanas' views. They played a major role with Niji the Cat. They are a humanoid demon.

Appearance
Nagisa stands at 175cm. They have short messy red hair and amber eyes. Nagisa's horns differ from the other demons shown, instead having a lighter brown color and curling around, similar to ram horns.

Early Life
After a disagreement with their parents, Nagisa spent most of their time in the human world hanging out with Masayoshi Watsuki. Not wanting to harm humans, Nagisa used a pet cat known as Niji to assist them so that they'd only take the color energy that Niji would produce.

Black Katanas
While they were both 15, Nagisa assisted Masayoshi into creating the Black Katanas and granting them the power to steal Inani's color energy. Nagisa made a deal with their parents for this to happen. This deal would enable Masayoshi to use this power, however, would bind Nagisa to the alignment of the Black Katanas forever. Even after Masayoshi disbanded the Black Katanas, Nagisa's loyalty remained.

Niji the Cat
Having saved Niji from a group of demons, Nagisa formed a close-knit bond with Niji.

Quotes
"So we're 'Mayo' now?"