I wondered who the author was, so i did a quick image search using Tineye (search images which are identical but cropped of your image).
The text which was formerly on her chest/むね was "nitro super sonic" so i googled that. This is what I posted as a comment. Note that I added the person whose photo it was so i could comment...
Was bored so i did some digging on this pic.
Using Tin Eye, got some matches.
HQ one (note: quite huge image):
Site NSFW 18+ etc etc explaining what this is about:
NSFW!! http://www.neko magic.com/?p=1288 NSFW!!
So in summary, this is image is the mascot of an event (Nitro Super Sonic) which is held for the eroge company Nitroplus.
Yea ...i get carried away doing stuff like this lol