Inside - Chapter 5

Uma is excited by the thought of someone watching her intimate moments. To try out this arousal, she visits The Box and takes over the identity of an attractive blonde lady, standing fully unclothed in a space constructed completely of transparent material. She senses a stranger's gaze fixed on her new form and identifies her arousing neighbour.
This realization sparks her lustful desires. Awakening her inner performer, she eases into a steamy bath and indulges in self-pleasure, imagining her exterior appearance. When Uma's partner joins her in the tub, they begin a passionate display, keenly directed at their curious spectator who is obviously relishing the scene.
Within what could be hailed as one of the most spacious bathtubs ever, the two engage in vigorous intimacy before partaking in vigorous lovemaking against the see-through partitions for everyone's amusement.