Yes, but not like he imagined

Immediately, Harry knows something is wrong. Instead of his body bubbling and changing rapidly, an intense warmth spreads through his body and he feels his being changing and transforming more permanently.

Soon the heat becomes too much, and Harry strips off in the hope that nudity will give him some form of respite.

Slowly, he notices her transformation, feels his hair grow longer and smoother, his face more effeminate and his shoulders less broad. He sees breasts growing on his chest, his waist narrowing and his buttocks rounding. His sex, painfully erect, seems to swell with heat, while just below, wetness appears as a vagina opens and new organs develop in his abdomen.

Whereas all this should have been very painful, Harry can only feel pleasure, as if he was constantly on the verge of a huge orgasm, and euphoria, as if his transformation was a good thing, letting his old self go and evolve into something more.

After a time that is both interminable and far too short, the transformation is complete and Harry observes his new body. His shoulder-length hair is a curious but harmonious blend of black and red, and his face is more beautiful than any girl he knows, reminding him a little of his mother. He now has an hourglass figure without being ridiculous, with heavy, bouncing breasts that are at least a size D. . His cock, still perfectly erect, is at least 11 inches, the same length as his rod, and just below, wet with love juice, pussy lips just begging to be penetrated.

Unable to resist, Harry explores her new body, which seems to be completely erotic. He fiddles with his own breasts, kneading them, pressing them together, pinching and sucking her hard nipples. Slowly, one hand slides down to her new vagina, gently caressing the slit before inserting one, two and finally three fingers, pumping furiously into this moist, warm carnal conduit that seems only waiting for a big cock to penetrate it. Finally, his other hand takes hold of his big cock and strokes it frantically, hoping to obtain the expected release.

Abruptly, his door opens just as Harry is jolted by an intense orgasm and a geiser of cum errupt from her cock. Slowly recovering, Harry can only watch the stunned face of his, ... no, her Aunt Petunia freshly covered in her jizz. Petunia, who has completely frozen in surprise, instinctively swallows some of the semen that has found its way into her open mouth.

In Harry, a new instinct awakens, urging him to fuck his aunt, or any male or female humanoid. The instinct tells him to spread his gift, his new form, throughout the world. Harry also knows that it's only her magic that prevents her from instantly responding to this new instinct and becoming nothing more than a reproductive animal whose first priority is sex.

(Author's note: that's it, English isn't my first language and I don't really have a real drive to write regularly, but I hope someone will follow this little rabbit hole).