Aoki

Aoki is a minor character in Toaru Kagaku no Railgun. She is a student in Academy City and is an esper of unknown level whose power involves the summoning of earth pillars.

Daihasei Festival Arc
During the Daihaseisai, she is seen competing in a bread-snatching race. Despite being shorter than her opponents, she uses her ability to boost herself up and easily snatch her dangling bread.

Abilities
Her ability isn't named or shown in detail, but it appears to involve creating earth pillars to boost herself up.