Kiyama Harumi

is character in the Toaru Kagaku no Railgun side-stories. She is the primary antagonist of the first storyline and becomes a supporting character in the second storyline of the anime adaptation. She is the creator of the Level Upper, a sound in which when used allowed the user's abilities to become stronger.

Background
She was a researcher in the Advanced Education Department, under the supervision of Kihara Gensei, she was part of a team that researched on abilities that surpasses its level limitations after exposure of certain conditions or more precisely - to interpret the laws of berserk abilities. During her tenure with the project, Harumi was tasked by Gensei to become a teacher for Child Errors as she has a teaching license. During her time as an instructor to the children she first thought of them as a nuisance, however she eventually formed a bond with them, especially to a girl named Edasaki Banri. However these children were all sent into an indefinite coma after an experiment with them went awry, their fate could've been avoided if Gensei would've allowed medical attention towards the children and not instead collect data. This event shocked Harumi and she eventually resigned. The experiments she partaken in eventually help in the improvization of the Crystallized Esper Essence and the Body Clear, a drug that can be used to surpass an esper's limits.

Harumi eventually became a researcher in AIM Dispersions in theAIM Analytic Research Center, even then she was already planning on trying to revive her students from their coma. In order to use its powerful calculation, she requested to use the Tree Diagram twenty-three times but was turned down every single time by the higher-ups. She eventually resolved in developing her own "processor", human minds connected to a network to calculate for her, after being inspired by the prospects of Misaka Mikoto's Clones tremendous calculating powers through the use of a network, she created a sound that allowed the listeners to become part of a network with other listeners and using the incentive of advancing their abilites, she distributed the file secretly to the student body, she also created a cure for the sound as she knew full well that using the sound would eventually lead the user to a coma. The sound in question is called the Level Upper, a sound that used synthesia to "level-up" oneself.

Appearance
Most of her appearances depict her having long wavy brown hair (which was shorter a considerable amount of time before the start of the series) and her most strking feature: bags under her eyes (which is the result of intense research in trying to revive her students). She is often seen in a white long-sleeved shirt and a brown pencil skirt and always wears a long white coat which scientists usually wear inside the laboratory. Later appearances gave her a suit to wear instead.

Personality
Harumi acts too logically and lacks common sense, which is demonstrated when she stripped in front of others without thinking about it, a result of her years being a researcher. In Toaru Kagaku no Railgun, she is revealed to be the source of one of three urban legends popularized by different Web forums within Academy City. the urban legend of the "Stripping Woman".

Harumi is a woman who shows weariness in her speech most of the time in her appearances in Railgun and is always seen wandering around District 7. This changed in the Level Upper Arc, where she is seen to be kind to her students (as she was their teacher) and was able to be close to them easily despite her quirks. After her students were discovered to be test subjects to an inhumane experiment, she fell into a depressed state.

In the last story arc of Railgun, she is seen to be usually downcast, putting herself to blame for what happened to her own students. She manages to take refuge to Misaka Mikoto's dedication to help others (and once noted that they share similar ideals) and Uiharu Kazari's eagerness to help her student Edasaki Banri.

Harumi is a woman completely dedicated to work, because of this she has gained eyebags under her eyes.

The Level Upper Incidents
After years of research, she was successful in creating Level Upper, an audio file which aims to connect the minds of those who hear through a network. Despite numerous attempts to gain permission for access to Tree Diagram to simulate test conditions, her requests were rejected. Because of this, she decided to transmit the file into the cyberspace, where the urban legend of the Level Upper grew and spread like wildfire across the Web and within the underground groups in Academy City.

She appears earlier in the anime where she meets Kamijou Touma after having forgotten the location where she parked her car, she also meets Mikoto as well and whilst she argues with Touma, Harumi begins to strip in public which embarasses Touma and making him run-away, Mikoto is then forced to deal with her antics which culminates in her concluding Mikoto is tsundere for Touma. They eventually found her car after an entire afternoon of searching, exhausting Mikoto.

She officially debuts during the height of the Level Upper Incidents, as a researcher hired by the Mizuho Medical Institute who aids Judgment on uncovering the nature of the Level Upper. After even more stripping antics which embarasses Mikoto and company she tells them that she was a teacher once. Even though she was the creator of the Level Upper, she often aided Judgment on the nature of Level Upper.

Soon, with the involvement of Saten Ruiko and later Judgment members Shirai Kuroko and Uiharu Kazari into the Level Upper incident, Harumi's identity as the programmer of the Level Upper was revealed. She used the powers of the 10,000 minds affected by Level Upper and became a Multi-Skill when she prepared to fight back the Anti-Skills who responded to her kidnapping Uiharu Kazari. She faced Misaka Mikoto and was defeated, only to produce an AIM Burst, an artificial entity created from the AIM diffusion fields gathered by Harumi's network. This too was defeated by Mikoto, and after those events, she was arrested.

The Poltergeist Incidents
After serving a short time under Academy City's detention facility, she was bailed by Heaven Canceler, who agrees to help her in her research to revive the children who are now apparently under his custody. It was revealed that the earthquakes now known as the Poltergeist Incidents occuring in Academy City; they were the side effects of the AIMs of her students trying to wake-up, these were apparently RSPK phenomena that occurs when they are attempting to awake them from their coma. Also, Heaven Canceler's eagerness to help her was a result of the former disapproving the inhumane methods of scientist Kihara Gensei, who leads the experiment Harumi worked with little knowledge about it.

The supervisor of Multi-Active Rescue in attempt to stop another Poltergeist Incident, takes custody of her students; despite her unwillingness, Misaka Mikoto's decision to side with Telestina gave her no options but to continue. Harumi later discovers that Telestina was in fact Kihara Gensei's granddaughter and was going to finish her grandfather's experiment and was eager in stopping her in her attempts to revive the children.

Harumi decides to go alone and follows her trail, however it is a trap though she is saved by Mikoto and company and is guided by Kazari to the true location of her students. Later Telestina herself attacks the en route to their destination using a large mechanical suit and with the teamwork of both her and Mikoto defeats her, Mikoto apologizes to Harumi of her decision but she simply says that she would've done the same thing. Harumi later finds her students but is once again attacked by Telestina, she is however powerless as Mikoto and the other espers have been incapacitated by Telestina using her Capacity Down. Despite this she tries to attack her but is severely beaten down, all seemed lost until Saten Ruiko manages to destroy the sound system that produced Capacity Down, enabling Mikoto to defeat Telestina. Harumi decides to use the Crystallized Esper Essence to revive the children, and after much fear of recreating the events that brought them to their fates is told that the children trusts her and allows to Harumi to finish having her story come full circle. Harumi haves a tearful reunion with her students and is asked by Banri why she has bags under her eyes, which she replies that she was busy. She then finally thanks Mikoto for all that she has done for her.

Harumi is recooperating in a hospital and receives a birthday gift from her students, a blimp featuring her students saying happy birthday to her, which prompts tears of joy from her.

Trivia

 * In the manga, Harumi remains in custody while her students all remain in a coma; however, since the manga has confirmed the existence of Haruue Erii as canon, it was can assume that the entire Poltergeist Incident as canon and that her students have been revived, just like in the anime.
 * She has an apparent distaste for carrots.
 * Harumi's birthday is apparently August 9, her birthday timeline-wise is a day before the events of the SISTERS Arc in the manga.
 * Harumi seems to be driving a blue Lamborghini Gallardo.