Yanagisako Aomi

Yanagisako Aomi (柳迫 碧美) is a minor character in the A Certain Scientific Railgun side story. An esper of a yet-unknown level, she is a close friend, fellow classmate, and roommate of Konori Mii's and is also a member of Judgment, though she is rarely seen working.

Appearance
She is a girl with long brown hair. She is also often seen wearing her striped shirt under her dress.

Personality
She is Mii's good friend and shows much concern for her, but not to the point where she will invade her privacy. She also jokes about not doing much work for Judgment as she is caught up in her love life.

Background
She is a member of Judgment, though for some reason is caught up with her love life. She knows many details regarding Mii, including her ordeal where she and a younger Shirai Kuroko is caught up in robbery against a power user, where Mii is injured. In the manga, Aomi arrives in the scene to treat Mii's wounds, she leaves shortly after giving joking about throwing away her Judgment armband, and giving Mii tips on her body.

She also knows Konori Mii's past as a member of Big Spider and her infatuation with its leader, Kurozuma Wataru.

Toaru Kagaku no Railgun
She debuts in Volume 2 of the manga, in a flashback during Kuroko and Uiharu Kazari's younger days as members of Judgment. Here, she is seen treating Mii's wounds, and jokes about throwing away her armband after Mii asked her what happened to it.

Big Spider Arc

 * Main article: Big Spider Arc

She debuts in the anime during the Big Spider arc. Aomi wonders why Mii acting strangely and asks her about, however, Mii denies it.

Misaka Mikoto, Shirai Kuroko, Uiharu Kazari and Saten Ruiko later go to her Aomi and Mii's apartment, to go ask her about Mii's involvement with Kurozuma Wataru. She lets them in and tells them that Mii used to be a member of Big Spider, and tells her of history with Kurozuma Wataru. She appears later, when Mii is going to The Strange, she tries to give Mii her armband but she simply ignores her and leaves.

Quotes

 * (To Mikoto, Kuroko, Ruiko and Kazari)"Feelings of alienation and soul-searching... They're like the measles you catch when you come to Academy City."