Ayano Nishiki is the Ultimate Hacker. She is most often seen with Kazuhiko Hiraoka, her boyfriend, who does most of her talking for her. She is quiet and emotionless on the surface. If she does talk, it is either only one word or because Kazuhiko is not currently available. It is noted that her voice is monotone and she always sounds tired.

Though, Ayano can be fired up, especially if there is an injustice happening. She is curious and questions everything, with her wanting to solve the mystery of the Killing Game. Ayano may be stoic yet she is not apathetic, caring much about the world and the people around her.

There is something about Ayano, though, that she has not told anybody besides Kazuhiko. Something that can change the entire course of the game.

(Ayano's voice actress needs a good range because of spoiler reasons.)