Ty quickly hit on an idea that he felt super tempted by. As long as he could remember, he'd been fascinated by werewolves- as a kid, he'd loved the idea of getting to be a powerful wild animal and run free, and as a teen, the idea of getting to experience the kind of primal instincts an animal has without restraining himself was super enticing too.
He willed the idea of becoming a werewolf into existence, and the sky turned to pitch darkness as a full moon emerged where seconds ago the sun had been shining. As its lights washed over him, a chill of anticipation shot through him, and he smirked and growled eagerly. Hastily pulling off his clothes, he could already feel the sensations of transfiguration emerging.
In his mouth, his teeth firmed and sharpened and his face started to elongate to a snout, his ears rising and rapidly turning more sensitive to sound. His hands and feet shifted and reshaped, appearing more dexterous than an animal's paws but with sharp, vicious claws that set them apart from human anatomy.
He exhaled with a weird sense of relief as his spine lengthened, feeling as if something unfinished about his human form was becoming complete. A wide tail pushed out behind his legs, an affirmation of the animal nature his body was getting back in touch with.
Ty's bones contorted as his spine curved to force him onto all fours, his arms adjusted to more naturally support quadrupedal movement- the term 'arms' didn't feel right to his brain now, they were front legs- and the epicentre of weight on his back legs shifted from his knees to his feet.
He looked down at himself and saw the figure of a wild animal. As if to emphasize it, he noticed his now deep red penis looked and felt larger and harder than it ever had before. Only his bare human skin reminded him he wasn't an animal. But as soon as he thought that, a prickling sensation erupted all over Ty's body. Thick, black fur covered practically every inch of him, and he appeared fully an animal.
Instinct from his new form rapidly overwhelmed Ty. He had to find a pack, to feed on meat, to chase, to mate, to fuck! With great force, he pulled himself onto two legs to open his window, dived from it and ran out towards the woods near his neighbourhood, not yet sure what to do once he got there...