File:Chūchūn.jpg

Summary
Fanart of the character Kazari Uiharu from A Certain Magical Index and A Certain Scientific Railgun, drawn by "wittyz"

Source: https://www.pixiv.net/en/artworks/7113179

Direct download link: https://i.pximg.net/img-original/img/2009/11/12/01/29/02/7113179_p0.jpg