"I know..." Blaise said, almost purring.
returning slowly the incubus, crawling on all fours, pressed his lips to Roy's now longer member and slid his tongue across it. Roy let out a moan, but the demons influence prevented climax - infernal magic dripped into his skin though the demons saliva and wormed their way into Roy's being. It didn't take long for their potent magic to possess the weary human. Blaise sensed this and grinned. He had done what he needed and slowly withdrew, lounging back across his sofa and settled down for the show.
Roy wailed, almost convulsing with the knotting pleasure rippling from out his cockhead, down his hard member which then spring-boarded over his being. He grabbed at his erection and began pounding away at it, going deep and hard such that Roy gritted his teeth and began to snarl. His whole body began to boil and itch, seemingly to sweal slightly before Roy was almost blown over by the pleasure of his muscles tightening across his flesh. Roy glanced to the sky, searching for a divine out from the infernal heat holding you down.
Roy's pecs began larger, more defined, as did your arms. Another trickle of pleasure expanded these muscles further and, to an emerging joy, Roy's abomined. What once was fear became an excitement, a sudden desire fulfilled! A fine six-pack, like a Greek god! In-fact Roy's body, although leaner and more like a swimmer, was a carving of hard muscle and strength. But that was not the end as the itching continued. Roy saw his legs became coated in dense and long dark hairs, and as did his forearms. His ass too, and how good and natural this addition was. A light coating then flashed across Roy's pecs as a scrappy amount of dark scruff grew across his jaws. Then Roy's hair grew wild as his thicker pit hair began to stink of locker rooms and the vast wilderness! Roy gritted his teeth and noticed how they changed how his canines sharpened.
And god, it felt good.
Then, as Roy's eyes became more lupine in character, set beneath thick eye-brows, he came! The floorboards were decorated with his spunk. The process made his knees buckled, forcing him onto his hairy knees. Roy's newly muscular, hirsute form lumbered painfully as his flesh began to settle. Roy looked up, his mouth agape and his weary form unable to move.
Blaise was sitting up now with a bright, terrible grin.
"Oh goodie, another werewolf."
Blaise leaned closer towards Roy, who in turn withdrew away.
"You know, the full moon is about to rise. I think you'll enjoy it. I've heard the first change is unforgettable."