I love videos where a heterosexual woman is made to do things with another woman! And both women have such lovely small breasts, way sexier than fake tits!
The girl playing the slave is Shiina Riku. She's acted in a whole lot of videos including many uncensored ones. This scene was taken from the JAV video [RBD-084] Slave Island Chapter 10 - Tears of Shimatani Sisters.
Instead of the smallest white girl they could find they should have brought in an average size 5ft7 girl. She would look like a giantess next to your average cute Japanese woman.