Padparascha (Houseki no Kuni) and Rutile (Houseki no Kuni), both female (since they're sexless in the series). Are having lesbian sex in Cowgirl position, rubbing vaginas against each others.
Rutile (Redish brown, with brown golden hair) - Is on top, with stockings and lab coat on, but it's wide open.
Padparascha (red long hair) - Is down bottom, laying on her own hair, with her sock and shoes on, and miniskirt.
Both are C cups.
Want to Rutile to be visible more from front.
Background can be completely plain.