The Headmistress - Mature Futas, #12

Lara Blake had always known what and who she wanted, but she had never desired anyone as much as she desired her current headmistress, Nadia Dyachenko. The older woman might not be the most gorgeous female around, but the way she looked at Lara made her heart beat just a little faster. Oh, not everyone would enjoy being glared at like that, but Lara was one that enjoyed a rough love, knew just how enjoyable angry sex could be, and she spent every moment near the other woman trying to make her lose her composure. Her attraction to the teacher wasn't like those students sometimes had.
There was something more primal about it. Lara didn't necessarily need a forbidden romance with Nadia, but she wanted something. And that Nadia was a futa only made everything more interesting.