How does Juliet do in class? Does John accellerate his sisters pregnancies?

Why not?

John couldn't help himself once the image was in his head it wasn't going to go away. With the snap of his fingers he watched as the two women impaled on his cocks moaned in surprise. Erica was the 1st to swell and John could tell that she was going to be the bigger of the two sisters her belly swelling as the four new lives inside her grew and developed, the perfect little pups .The big grey wolf lovingly stroked as the two women he drilled grew even tighter, Melanie was looking more unbalanced her own belly swelling with three perfectly formed progeny, a perfect sized pack for their initial hunt into the world. John wondered about the gender ratio but decided it didn't matter. If any boy got too big for their boots he'd simply invert their gender and give them a first-class understanding of who was boss. He had always had a thing for gender bender when he had been human.

He kissed Melanie's ear enjoying the sensations of his top cock still inches away from her pregnant womb. There was nothing more satisfying than seeing your work to come to fruition. He couldn't wait to start raising his new family showing them off to a wide world. Seeing what else get up to with his new-found power. He was going to create a sexual paradise on earth especially for people like him.

Meanwhile Juliet was already experiencing a taste of her new life and she didn't even realise it