As you begin to come to you remember what happened, and brace yourself for the inevitable truth that your body is probably now female as you open your eyes, but when you do you notice that things aren't what you expected. A quick check between your legs does reveal to your dismay that you've lost your manhood, and you've also lost quite a lot of muscle, but other than that you're quite androgynous. Your hips and ass aren't much to speak of, and you have no breasts. You do have two bunny ears, and a cute bunny tail sticking out of your rear.
You look around, and everyone else seems to be in a similar state. If you judged by face alone, you couldn't tell who was male and who was female. Everyone was slender and lacking in sexual features. But you noticed people checking themselves downstairs and it did seem that those in female uniforms now had new appendages and those in male ones had lost theirs, and of course everyone had animal traits to reveal their new sex.
Principal Kellers suddenly smiles a wicked smile. "How does it feel, boys, to have lost your manhoods? All the male power you've been used to, relied on and abused for all your life, suddenly gone? Do you feel weak, helpless? Get used to it."
You weren't sure what he was talking about or what was going on, but you weren't going to stand for it. You kicked off your now ill-fitting shoes, tightened your belt to keep your pants on, and then charged the stage in a rage. Several beefy bodyguards stepped in the way, so perhaps your charge was foolish, but the principal smiled. "No, let him come." he said and waved them down as he stepped forward to meet you. The bodyguards stepped out of the way. It was just you and the principle now, and soon you were upon him. You aimed a fist, but he deftly stepped out of the way. You swung again, he dodged again. He laughed, apparently having fun, and stopped bothering to dodge, instead blocking your blows quite easily. It was no use. He was a muscular man in his prime, the biggest you'd ever seen in fact, and you were....were some sort of pseudo girl. But you raged and kicked and screamed, until eventually he grabbed your arms, spun you around to face away from him and held you pinned. "Now that was not very lady-like was it? But you'll learn your place in time."
He passed you off to a guard, and though you kicked and squirmed it was useless, and eventually you stopped. The rest of the school just watched. Why didn't they help you? There were bodyguards yes, but there were a thousand students! If everyone charged, they'd overwhelm the bodyguards. Were they afraid? Cowards.
The principal returned to the microphone with a chuckle. "Well, shall I explain the rest of things to you all? You see, this is an experiment, but it is so much more. You non-magical people wouldn't know, but the world has secretly been controlled by warlocks for a very long time."
Many of the students looked incredulous, but after all that had already happened...
"The regime was totally sexist," continued Kellers, "and to be female in the magical world was to be chattel. A witch's power would be used to fuel her master warlock and nothing more. She was his slave. That is changing now, and yet, it is not. As a former female witch myself, when I found the power to change the world I decided I wanted more than freedom, I wanted revenge. So I won't be doing away with the old order, I'll just be flipping things around, and maybe spicing it up a bit. You males who have always taken advantage of females will become weak, helpless, docile females, and females will become powerful ruling males. Furthermore the non-magical will gain animal traits to visibly reveal their status. The whole world will know of magic soon, and I will rule it, but I had to test my enchanted gas before taking things global, so I'm starting with your school."
The audience was finnally getting noisy, looking like they might fight back, but the principle only grinned at that. "If any or all of you want to challenge my magic..." Suddenly the lights flickered and dimmed, even the sunlight itself, and the principal levitated into the air! He raised his hands, and lightning arced between his fingers. "I welcome the opportunity to have some fun. Attack me if you wish, though I can't promise I won't accidentally kill any of you."
There was a scream, someone losing it, and then silence as the crowd submitted to fear.
"Good good." he said.
but you wouldn't have it. "Fuck you!" you screamed.
He looked at you then with the most sinister joy you'd ever seen, and it chilled you to the core. "You know," he said, "I think this young lady has volunteered to be the first to finish her transformation." He motioned to the guard that was holding you and you were brought closer. "Obviously, your changes aren't done, androgynous as you all are. Oh heavens no. Like most transformation magic, certain rituals need to occur, and some form of consent must take place, to complete the spell. I won't bore your simple minds with the details, but in short, she will only fully blossom into her femininity when she experiences and surrenders to sexual pleasure. Indeed, if she could resist the pleasure she might theoretically even find a way to become male again, but I don't expect we'll see that happening, not when I've magically multiplied your pleasure capacity." Then he raised a hand towards you and purple tendrils of magical energy shot forth from it to grab you, taking you from the guard's arms. Like something out of a tentacle porn you were molested as your clothes were torn from your body, leaving your newly emasculated body on full display to all of your classmates. You gasped as one tendril rubbed a nipple and a jolt of pleasure flowed through your body, and as the pleasure assaulted your mind you felt that nipple grow perky and erect in a way it never could before. No! You wouldn't give in! You steeled your mind and grit your teeth against the pleasure, and glared into the principal's eyes, even if your shame had your cheeks burning red.
But he looked away as if you were no longer worthy of his time. The tendrils detached from his hand, but they kept assaulting you, caressing your body. He started chanting, another spell, and more and more tendrils poured out of his body. They detached and snaked through the auditorium, seek pray, seeking girls. Screams and chaos erupted as new girls were chased around the building, but eventually they were all caught, held down, and pleasured, and screams changed to moans. Most resisted, but a few gave in rather quickly, and you watched as hips and asses expanded, as breasts grew in. Some of the new boys tried to help them, but it was useless. Their hands passed through the magic tendrils as if they weren't there. There was nothing they could do but watch...and with the growing sexual charge in the air, some of them were beginning to get boners, if the tents in the front of their skirts were any indication.
Then one of the tendrils finally entered you, forcing it's way up your ass. You clenched your butt to try to stop it, but it was stronger, and soon a new pleasure assaulted your consciousness as you felt something inside you sexually for the first time. It forced it's way in inch by inch no matter how tight you clenched, and you barely managed not to cry out. It would have been an incredibly girlish sound, you knew. You could almost feel her, the female you, on the edge of your consciousness. It was as if girlhood and boyhood were both a part of you, but for the moment the boy was on top and in control, and the girl was hidden away, but she was growing, whether she wanted to or not, as this pleasure fed her a magical energy. She wanted to moan and surrender to it, but you knew you couldn't let her, or all would be lost. You grit your teeth again, but you thought your ass felt a little plumper, your hips a little wider. You'd begun to form the tiniest of breasts as well. Unfortunately all of this only served to increase your capacity for female pleasure, and as tendrils massaged your new tits a heat was growing in you. You pushed it all out of your mind as best you could. You would never, ever give in.