Kihara Nayuta

Kihara Nayuta (木原 那由他) is a character introduced in a Toaru Kagaku no Railgun mini-novel by ''[http://en.wikipedia.org/wiki/Baccano! Baccano!] and [http://en.wikipedia.org/wiki/Durarara!! Durarara!!]'' author, Narita Ryogho.

Background
Like Therestina Kihara Lifeline, Nayuta took parts in experiments at a young age. She volunteered herself to Gensei and wants to reach a level similar to the seven level 5's. Because of these experiments that toyed with her body which damaged it greatly, her body is now 70% mechanical, and is only alive because of Heaven Canceler's intervention.

Apparently she is part of a special branch of the Advanced Education Department that is affiliated with Judgment. She is also acquainted with Kiyama Harumi's students and appears to care for them.

Appearance
She looks like a elementary schoolgirl that sports blonde hair which she ties in pigtails, and is often seen wearing her red backpack.

Personality
Nayuta is a little mischievous, manipulative and competitive; though not to the extent of her relatives. She is also interested with level 5's and wants to challenge them and surpass them. She is also quite knowledgeable like her relatives, knowing that both Sogiita Gunha and Misaka Mikoto are level 5 espers.

Toaru Jihanki no Fanfare

 * Main article:Toaru Jihanki no Sonzai Shoumei

She is first seen looking for level 5's to challenge. However, as a member of Judgment, she is unable to attack anyone without just cause, she later finds Misaka Mikoto kicking a certain vending machine and uses this as an excuse to fight her. Using her abilities, she uses Mikoto's AIM field as so she can discharge electricity. This does not go unnoticed by Shirai Kuroko and Sogiita Gunha -, who were fighting nearby and decided to go and investigate.

When Gunha arrives, Nayuta rallies him to her cause and actually appeals to Kuroko's nature as a member of Judgment. With that, Gunha fights Mikoto; both of them however, show no hint of animosity and are happily testing each other's mettle. The fight is cut short when the Tokiwadai Dorm Supervisor arrives and takes Nayuta home.

Ability
She has an ability that allows to manipulate other's AIM diffusion fields similar to Takitsubo Rikou -- although she doesn't need to use the Body Crystal to activate it. She was able to make Mikoto unconciously discharge electricity which was enough to be noticed by Kuroko and Gunha. If Nayuta trained her ability, Kihara Amata deemed her capable of defeating Accelerator.

She also is a cyborg and has superhuman speed and strenght, although her cybernetics were meant to be medical in nature and not combat oriented like Kuroyoru Umidori

Quotes

 * (Nayuta, explaining to Mikoto): "My family reads the esper's diffusion field flow and uses the gap to attack. Because I haven't learnt it yet, I can only use this mechanical body and my own ability to make up for the lack of senses those amazing people have. They were able to detect the opponent's energy flow just through instincts and experience." -- "The one who taught me all these, Amata oji-san told me that 'if I train this to the max, there's nothing to be afraid about when fighting that no. 1 esper in Academy City, and that I can win'. But in fact, so what?"
 * (Nayuta, talking about Child Errors): "'Child Errors' are just flawed items to Academy City." -- "BUT EVEN IF THEY'RE FLAWED, HUMILIATING THEM LIKE THIS IS UNFORGIVABLE!!"

Trivia

 * In the New Testament Volume 1 Afterword, the Kamachi Kazuma acknowledges her existence in the Index canon, and as the reason why he has officially introduced cyborgs in the main storyline.