I've only got this screenshot here. I watched the movie on PH long time ago but the movie got lost when PH purged all the "non-confirmed" material.
I'm pretty sure it is Koide Haruka, but not 100%.
I remember her masturbating in a bath / onsen.
If you want to torrent it, you can try magnet:?xt=urn:btih40B038D42E8DA71DAE5DBEFFE60C28D0403134E&dn=%5BFHD%5DBD-M31 but since it's a two year old torrent I don't know whether it will actually complete.