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 5s. Because of these experiments that toyed with her body and damaged it greatly, her body is now 70% mechanical and is only alive because of Heaven Canceler's intervention.

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, sports blonde hair which she ties in pigtails, and is often seen wearing her red backpack.

Personality
She is a little mischievous, manipulative, and competitive, though not to the extent of her relatives. She is also interested in Level 5s 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 5s to challenge, but since she is a member of Judgment, she cannot attack anyone without just cause. She later finds Misaka Mikoto kicking Vending Machine 7116, and uses this as an excuse to fight her. Using her abilities, she manipulates Mikoto's AIM field so that Mikoto can discharge electricity, which catches the attention of Shirai Kuroko and Sogiita Gunha, both of whom were fighting nearby and decided to go investigate.

When Gunha arrives, Nayuta rallies him to her cause and 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
Her ability allows her to manipulate others' AIM diffusion fields, which is similar to Takitsubo Rikou's power but doesn't require the use of the Body Crystal to activate it. She was able to make Mikoto unconsciously discharge electricity. According to Kihara Amata, if Nayuta trained her ability, she could be deemed capable of defeating Accelerator.

Being a cyborg, she has superhuman speed and strength, although her cybernetics were meant to be medical in nature and not combat-oriented like those of 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 that 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 Number One 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, Kamachi Kazuma acknowledges her existence in the Index canon, and as the reason he had officially introduced cyborgs to the main storyline.