It's the video thumbnail to this Nico video...
http://www.nicovideo.jp/watch/sm4964624
Watching the video now to try to find the right part...
EDIT: Found it, at 4:04... now to hope one of the Nico commenters said what anime it was...
EDIT 2: The anime is Soul Link:
http://en.wikipedia.org/wiki/Soul_Link gonna need a little more searching to figure out the character
EDIT 3: Nitta Aki (新田 亜希)