Chisa

Chisa (ちさ), known as Chisa-chan (ちさちゃん) to her unnamed friend is background character introduced in Toaru Kagaku no Railgun

Appearance
Chisa has mid length hair and wears uniform with hat.

Dream Ranker Arc
At the banks of a canal, Chisa tries to retrieve a friend's hat from an overhanging tree with a twig. She falls from the tree and starts drowning in the canal, but is saved by Kuroko and Uiharu.