Mistress Kathia's new toy

Kathia Nobili recently acquired Bianca Arden, detaining her in a custom wheelchair with Bianca secured to it. The wheelchair includes a gap perfectly aligned with Bianca's vagina, enabling her to be subject to Kathia's explorations with her unusual toy. However, Bianca won't just endure penetration from below. Before that, she must submit to Mistress Nobili's twisted activities...