Tsurigane

Tsurigane ( (釣鐘 ), possibly known under the alias of Saryou, is a Kouga Ninja who infiltrated Academy City posing as a Child Error so that the ninja clan could get a spy to supply them Intel on the goings on and the knowledge on the advanced technology and a grasp on Esper powers; however she betrayed the group and allied with Kimi, a mysterious prisoner of the Private Juvenile Hall of Academy City. She is one of the main antagonists of the Jail Break Arc.

Personality
Tsurigane is a conniving and deceitful girl who feigns being rusty in her skills as a ninja and getting injured during the Jailbreak Competition in order to better her chances of striking Oumi Shuri while her guard was down.

Of note is that Tsurigane is a master actress who could fool her fellow ninjas so perfectly that they were unable to tell the difference and be manipulated into participating in the Jailbreak event so as to serve as the contingency if a skilled hacker was unable to break Kimi out. Even Oumi Shuri a Kunoichi with decades of experience in the field herself had failed to notice Tsurigane's true colours until she revealed them herself.

Despite having betrayed the Kouga Tsurigane seems to retain a degree of pride in being a ninja and even being respectful to Oumi Shuri despite trying to kill her, proclaiming that the stats of ninjas are "high as hell" while thinking back to a time in training when she witnesses Oumi kill numerous wolves with only a kunai knife.

Abilities and Powers
As a Kouga Ninja Tsurigane is a skillet warrior whose physical abilities far exceed that of the average individual. She is capable of heading onto the roof of a moving car, run up a nearly vertical tree from a branch without any sort of running start, and jump from tree to tree with great effect. Tsurigane's athletic ability is so great that Kuroko Shirai initially believed it to be a muscle enhancement ability comparing it to the level 4 Hokaze Junko and would've continued with said assessment had it not been for her predicting her own ability before hand. Her body may have also been modified to some extent during her training. Tsurigane possesses great hearing detecting when Kuroko Shirai appeared atop of the vehicle from the sound alone.

Tsurigane primarily uses a Kunai as a weapon for close quarters combat and throwing Needles dipped with an incapacitating drup for long combat. This allows her to incapacitate her opponent if she requires them alive while also making them easy to kill if not.

The entire first portion of the Jailbreak arc is a testament to Tsurigane's acting skills and talents in deception and manipulating others. Feigning a ditzy personality, a naive disposition and a general lack of skill when compared to other Kouga Ninjas and sustaining an injury when she was in fact fine. She was even able to land a blow on Oumi Shuri as a result of this deception.

Esper Power
Tsurigane has undergone Academy City's Esper Development program thus granting her an ability. The Kouga ninja were apparently interested in seeing her ability first hand meaning that she has developed a personality reality successfully.

However Tsurigane's ability is actually to observe the AIM diffusion fields that Espers emit without conscious awareness. With years of combat experience and a great amount of observational awareness Tsurigane has learned how to read the AIM Fields with a scary level of accuracy to predict how and when her opponents can and will use their powers. Against Kuroko Shirai she could predict the exact timing and location where Kuroko's would teleport and what. However even if the calculations are made the enemy does not need to necessarily activate the ability allowing Kuroko to utilize a potential attack as a feint to land a blow on Tsurigane effectively.

History
In Academy City a Child Error is a child whom for one reason or another is abandoned to the city and taken care of in basic child support to use as test subjects for the power development curriculum. The Kouga Ninjas are a secret group of ninja who train infants up to age five with an intense curriculum of their own however they are quickly loosing the battle against the modern age and desiring the advanced technology and esper powers opted to send one of their ninjas as a Child Error. Tsurigane was chosen at around this time Tsurigane's parents died and she became an orphan. During her time as a student she became acquainted with Oumi Shuri, though she apparently did not know that she was in fact over thirty do to looking like a teenager even then (possibly a fabrication to better sell her illusion of a ditzy and out of practice ninja as opposed to her actual ability), and personally witnessed Shuri dispatch numerous wolves with a single kunai.

While in Academy City she developed an AIM Diffusion Field Observational ability, and observed teleportation enough to have a working grasp on how to predict it effectively.

However she eventually betrayed the Kouga and joined forces with Kimi, Aohoshi and Raifu for unknown purposes and reasons. However Kimi was captured and sent to Juvenile detainment and her associated plotted to rescue her. Aohoshi infiltrated the facility where Kimi was and served as the insider for the operation to free her and to find a skilled hacker for their purposes. When the Faux Jailbreak competition occurred Aohoshi helped to knock out the real fake prisoner and Raifu would trim the contest of capable non-hackers while Tsurigane manipulated the Kouga Ninja into participating knowing that they wouldn't actually desire victory and would be able to free Kimi should no hacker meet the standards of breaking into the prison's system. As a result of this plan Kimi was freed by Uiharu Kazari.

Once freed Kimi meets up with her allies and discuss their plans involving the hacker who freed her in the first place. Awaiting the time to strike Kimi, Raifu and Tsurigane play a game of cards while Aohoshi looks onwards shocked at the Dragon and Ninjas turning out to be real. Later when night falls Kimi, Raifu and Tsurigane along with a few unnamed accomplices whom they had drive the car kidnap Uiharu.

While on route to their destination Uiharu friends including the number 3 Level 5 Misaka Mikoto track down the car most likely to posses their friend. Tsurigane takes notice of Kuroko Shirai when she appears atop of the RV and attempts to launch a surprise attack. Barely dodging Kuroko attempts to restrain Tsurigane by teleporting needles at her feet but seeing the attack's calculation with her own ability Tsurigane dodges. Tsurigane than throws one of her needles at Kuroko but she teleports elseware. Tsurigane is surprised that their kidnapping had been noticed so soon but her train of thought is disrupted when Misaka Mikoto uses electrified wire to attack the RV's tires forcing a sudden halt. Tsurigane orders the drivers to go secure new cars for their use while Kimi comes out to deal with Misaka Mikoto herself.

After the battle two cars exit the smoke screen caused by Kimi's dragon, each containing a driver and either Tsurigane or Raifu while Kimi seems to have escape elsewhere. The car containing Tsurigane is chased by Kuroko Shirai who witnesses it crash into a tree, Tsurigane having made it out before hand launches a surprise attack at Kuroko from the tree. Kuroko manages to dodge the attack and quickly find where Tsurigane is, whom tells her driver she can leave.

Kuroko than teleports to right behind her but having predicted where she would appear from witnessing her AIM field tries to stab her with her sword. Kuroko however had expected as much and uses a panel from the street below as a sheild. Believing that Tsurigane had no escape route Kuroko moves in for a kick but inturn learns that her belief was a mistake as Tsurigane runs up an almost verticle tree to dodge much to Kuroko's shock. Tsurigane launches another attack from a higher angel forcing Kuroko to retreat some ways but Tsurigane jumps from tree to tree as a pace so powerful that Kuroko wonders if Tsurigane's ability is muslce enhancement comparing it to Hokaze Junko's rampage dress. However this cannot be the case as Kuroko (unnaware of magic) believes that someone can only have a single ability and thus deduces that this is merely her base athletic ability.

Tsurigane laucnhes more of her throwing needles which Kuroko uses her steel panel to block but a few strays graze the driver by mistake. Tsurigane appologizes not knowing that she was still in the area as the driver suddenly feels dizzy and falls down. Kuroko realizes aloud that the needles are poison, Tsurigane comes down to ground level and clarifies that they only prevent the target from moving in case she needs them alive and can kill them if they are helpless.