Gaouin Tsukasa

Gaouin Tsukasa (雅王院司) is a student of Tokiwadai Middle School who appears in Toaru Kagaku no Mental Out. She is the incumbent Vice President of Tokiwadai's Student Council.

Appearance
She has shoulder length black hair, which she ties into two pigtails. Her eyes have concentric circles in them.

Apart from the standard Tokiwadai uniform, she wears one glove on her left hand. She wears stockings or a pantyhose with her uniform.

Personality
She's prideful and is easily willing to go toe-to-toe against Shokuhou Misaki herself. She's a stickler for efficiency and this is shown by her using a silver pocket watch to quickly criticize students asking for her help and feedback. The silver pocket watch itself is a sign of her influence as when she raises it means she is taking requests and she is immediately approached by her followers. She even proclaims that it is a sign of her bond with her followers.

Due to how old-fashioned it looks, Misaki calls Tsukasa as someone who is a "chuuni" (中二, lit. "middle-school second-year"), someone having chuunibyou, and that she lacks real confidence and uses props to hide behind.

Background
As the start of the story, Tsukasa begins her election campaign to become the next head of the Tokiwadai Student Council. She leads her own clique and uses to help her win. She plans to break up all the cliques in the school.

Tokiwadai Election Arc
The day before the arc's main events in October, Gaouin had observed Misaka Mikoto down, due to losing her Gekota strap when two people fought over getting her support for their respective election campaigns, and had searched for it in the forest behind the school, eventually finding and returning it to her, leading Mikoto to support her own effort in return.

The next day, Gaouin and her supporters got into a dispute with Shokuhou Misaki and her clique, leading Gaouin to issue a challenge for Shokuhou to compete against her in the student council presidential election, which the clique pushed the reluctant Shokuhou into accepting, and voiced her intent to disband all cliques if she was elected president. She would later visit the clique, who had had their usual room sneakily taken from them, to explain the rules behind the election, with another individual revealing Mikoto's support for Gaouin over the announcement system.

Not long afterwards, when Hokaze Junko was accused of threatening and coercing a member of the Kamino clique, Gaouin decided to help Shokuhou find evidence that would exonerate her, the two forming a shaky, temporary alliance to that end, searching independently from their cliques. The prospect of their two main rivals joining forces led to Iori Mashiro and Kamino arranging a meeting with the other election candidates and forming an alliance themselves with intent to forcibly take them out of the running, something Gaouin did not anticipate.

While the two were searching the vacant Building 3, they were ambushed and trapped in the building, coming under attack from their hidden rivals. During the attack, Gaouin avoided numerous attacks, leading the attacking clique leaders to wonder if a predictive ability was at work, but eventually sustained a severe injury to her arm when pushing Shokuhou out of the way of Tatsuki Mirei's attack.

Abilities
Gaouin's ability is a psychological-type power which allows her to detect and reflect thoughts. According to Gaouin, it is capable of blocking Mental Out even at full strength. During an attack from the Synthesize Grid, Gaouin scattered remotely controlled nanometal particles, which were conducting part of the attack on auto-pilot, by deflecting the hostility carried through them.

As a student of Tokiwadai Middle School, it can be presumed to be at Level 3 or 4.

Trivia

 * Her grandfather's friend is apparently related to the company which produced Gekota.