My guess would be that it's Anri Okita, but I'm not entirely sure. It doesn't help that she's covering her face...
For further scientific analysis, please watch her boobs bounce in slow motion
http://67.media.tumblr.com/7b47fbb7a44886af80901dca3482ac86/tumblr_o81v00RgQ51vnydhvo1_500.gif
Can anyone confirm that this is in fact Anri Okita and hopefully ID the video? Thanks!

For further scientific analysis, please watch her boobs bounce in slow motion
http://67.media.tumblr.com/7b47fbb7a44886af80901dca3482ac86/tumblr_o81v00RgQ51vnydhvo1_500.gif
Can anyone confirm that this is in fact Anri Okita and hopefully ID the video? Thanks!