Ruiko Saten

A Level 0 classmate and friend of Kazari's and another protagonist in Toaru Kagaku no Railgun. Known for wearing a flower on the left side of her hair, she is rather shameless as she tends to flip Kazari's skirt in public and comment on her panties. She likes to read up on urban legends, most of which turn out to be true. Despite her cheeky personality, inside she is a bit disheartened about having no psychic potential. 

Whilst under Level Upper's power, her ability was shown to be a lower levelled version of "Aero Hand", the same as Mitsuko's. Her experience during the Level Upper incident made her appreciated for who and what she is and has made her determined to work hard to achieve her powers. She first appears Toaru Kagaku no Railgun and makes a cameo appearance in the Toaru Majutsu no Index light novel series. In the Toaru Kagaku no Railgun anime, she is present from the beginning, however she appears much later in the manga.

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