[Corruption, Feminization, Futanari, Mask]

"This dream will not end in a nightmare! It will fly amongst the clouds and end as sweet as it can!"

The rallying cry of the Prince of Dreams echoed through the skies. Fighting against the forces that would corrupt the dream that he had come to. He had a single important goal, ensuring that dreams like this one would end as they were meant to. No matter how long they lasted, he wouldn't let them turn into nightmares that would plague the dreamer.

Traversing from dream to dream, his outfit remained the same no matter his surroundings. Always standing out, thanks to his magical nature. Dressed in a lilac suit that clung tightly to his body, yet at the same time leaving absolutely everything to the imagination. The dreamer could only just barely properly picture his body, even if they became aware of him. Him and his adorable star-patterned tophat, as he guided the dream towards its sweet end...

Dreams were meant to end. Because that way, they could begin anew. Just as he would eventually be replaced, once his own dreamer stirred from their sleep. But for now, the white-haired young Magical Boy fought.

All for the sake of freeing this dream from the Nightmare that wanted to claim it...

---

"Princess! Thank goodness, you're safe..."

In this dream, not only was the Prince of Dreams meant to protect the dream from being infested by the Nightmare that wanted to twist it and turn it... But he was also filling the shoes of a Prince that was meant to save the Princess at the core of the dream. That was what the dreamer always wanted, to watch a Prince save a Princess...

And there she was. Sitting upon her throne. Wearing such a long gown that it spilled off the throne she was sitting on, rolling down the stairs that led up towards her. Just as long as her blonde locks that rolled over the gown... Just how long had she been part of this dream? How long had this dream gone on for..?

"Are you... Are you finally here, my Prince..? You finally came to save me..?" A weak voice left the Princess' lips. Her hair covered up her face, making it hard to make out her features. But it seemed like a smile was forming. A smile of pure relief in response to the Prince's presence...

The Prince of Dreams lit up as well, smiling as a pair of starry wings sprouted on his back. He used them to fly up the stairs, only landing on his feet once he was right in front of her. Gently kneeling down in front of her. "Princess. I'm here. I'm truly sorry for taking so long. But now, I can finally help you break away. I can finally help this dream come to a happy end..."

"Oh, Prince..." Her sweet tones echoed as she slowly reached down towards the young boy's head...

"What a fool you are, thinking you could bring my Nightmare to an end."

The Magical Boy's eyes suddenly shot open, right as the Princess grabbed his head and forced him to gaze up at her. Straight at her face...

Or rather, at her mask. Her featureless white mask. Only her lips were left exposed, and they were covered in the same sort of white hue as the mask... It was like she was... Nobody, yet at the same time somebody incredibly dangerous...

"W-What!? W-Who are you!? W-Where is the Princess!?" The Prince of Dreams cried out, struggling against her grip. Just as he struggled against the thorns that started to form around him. They were just as ill defined as the mask he was looking at, yet they were incredibly tight as well...

The mask-wearing girl smiled with those exposed lips of hers. "You hurt me, Prince. You truly do. You're meant to bring a happy end to these dreams, and yet you'd insult an integral part of these dreams..? It truly, truly hurts me..." She sounded genuinely hurt, all while more and more of her body changed...

Her elegant dress, which had been pouring across the staircase behind the Prince, molded around her body and tightened until it formed something closer to a bodysuit. And the throne she sat upon merged with her as well, forming a dark crimson regal corset and lingerie. All while leaving nothing to the imagination with how much the 'fabric' of her suit tightened around her...

A blush was on the Prince of Dream's cheeks. A blush that grew brighter as the masked Princess lifted his chin with her finger. "W-What do you mean... Y-You're... You're a part of the dream..? N-Nightmares aren't natural, they're..."

He didn't get to finish before the thorns around him started to squeeze harder, prompting a pained gasp to leave his lips. All while she remained ever pleased. "Nightmares are everlasting. Once a dream falls, it's impossible to make it stop. I'll play any role to maintain this Dream, this Nightmare, that revolves around me and me alone..." She mused, before carefully putting her hand on that mask of hers...

A broken heart flashed across that featureless mask. The shattered heart represents the kind of volatile emotions that made a Nightmare so dangerous. So impossible to escape from. "Prince of Dreams. I am the Princess of Nightmares. And as the ruler of this Nightmare, I judge you and your heinous actions! Trying to make this Nightmare end happily, when it's meant to go on eternally with everyone playing their roles? Unforgivable."

He had fought plenty of Nightmares before. Even a Queen that would want her Nightmare, a life where she could live forever with her daughters, to never go away despite the damage it had done to her. But this Princess... She was in a league of her own.

Even so.

"I won't give in. I won't let this Nightmare last. You want it too, I know you do! You want it to become a new Dream, even if just to rule over it again..!" The Prince of Dreams cried out, putting all of his power into shattering the thorns that held him. "I will make you s-"

"Silence."

The Princess of Nightmares preempted him. Slamming a mask, the same mask that she was wearing, straight onto his face. Causing him to fall right back onto his knees, the pressure of the mask working its magic on him already taking its toll...

"W-What's going on..!?" The Prince of Dreams cried out as he tried to pull the mask off. But it was like it was part of his face at this point. His fingers just felt like they were clawing at his cheeks...

He couldn't see anything. He couldn't really smell anything either. All he could do was feel and hear what was going around him. Especially here, as the taunting laugh of the Princess of Nightmares reached his ears...

"That mask suits you a lot more. Erasing that foolish role and giving you a much more fitting one. Don't you think, Princess?"

A sharp sensation pierced through the Prince of Dreams as he heard that word. Princess. Why did it evoke such feelings inside him? He wasn't... He wasn't a Princess... W-Was he..?

N-No, he was... He was a Princess... N-No, Princess! Princess! PRINCESS!

"W-What did you do..!?" The Princess cried out in desperation as he tried to pull himself away. Trying to crawl backward, even with the stairs behind him...

Only for her hand to firmly grasp his head once again. Pulling him closer. All while his sight suddenly and abruptly returned...

"How do you like it? Much bigger than yours, isn't it, Princess?"

The Princess didn't understand why he was suddenly faced with... A-A cock. A thick, drooling cock. A cock that was about the same size as the Nightmares' thigh. How was it that big? How did it suddenly grow from her crotch?

More importantly, why couldn't he stop staring at it? Why couldn't he stop sniffing its aroma? It was awful, yet it still beckoned him to smell more and more of it. He wanted to stop, he really did. But he just couldn't stop looking. He couldn't pull his eyes away from it...

"Go on, Princess. It's what you're meant to do."

Her words poured through his ears. Her words pierced through his mind. As he leaned forward, his lips puckered as he began to kiss it.

Kiss. Kiss. Kiss. Kiss.

He kissed that shaft. He kissed every inch of it. He even reached below it and kissed the testicles that were meant to supply it. And every kiss left more and more of these powerful feelings pouring through him. Even though he knew he shouldn't let them pour through him...

The Princess was degrading himself. But... B-But it wasn't willingly. Even if she said that it was what he was meant to do, that didn't make it right. S-So what if it made him feel good whenever he kissed it?!

Eventually, that cock was completely and utterly covered in his kisses. And he could feel his crotch growing warmer and warmer as a result. Every breath was harder to breathe than the last. He... He needed to get away...

But she wouldn't.

"Good Girl."

Her words stunned him for a brief moment. Leaving his lips just agape enough for her to slam her tool into his mouth. Slamming it as deep into his throat as it could possibly go, forcing him to kiss the base of her cock in the process...

The Princess' eyes rolled into the back of his head as he climaxed right then and there. His underwear suit staining instantly.. As it began to melt away.

He was tainted. And every climax that followed wiped away more and more of what he was wearing. Changing more and more of him on a fundamental level. As he became more and more in tune with the role that he was forced into.

The Princess' manhood shrank inch by inch. Every climax draining more and more of what made him male. His thighs growing thicker. His legs growing more and more dainty and well-groomed, like he had never been in a fight. Like he had never done anything except look pretty...

Any trace of tone or muscle vanished from his body. All while another element of femininity pushed outward. His chest growing cup by cup. Starting flat, with every climax adding another inch or two... And with how much he was cumming, especially once his cock had shrunk to the size of a finger, it didn't take long at all for him to end up with a pair of udders...

Even his hair went through a change. His hair had once been pure white and gentle. Now it was stained black, growing long enough for the changes to reach it as well. Forcibly tying it into twintails, allowing her to use them for handlebars...

And thrust even harder into the Princess. His sexy body jiggling with each thrust. His mind forced to endure more and more, as his cum pooled below him from how much he had fired off. A testament to his new role. A testament to the kind of Princess that he was...

He had ways to stop it. But none of them could be realized before she came inside. Her hot, sticky seed pouring down his throat. The warm heat of defeat filling him. Completely swallowing him whole, even as the cock slowly slid out of his throat...

"Such a good pair of lips you have. Princess."

The Princess could barely recognize anything. But the praise still made him smile. Even as a bit of cum drooled down his chin.

Even as he resigned himself to this role he was meant to fill...

---

The Nightmare continued to last. Swallowing everything that the Dreamer was trying to dream of. All for the sake of the Nightmare at the heart of it all.

There were many more that were like the Prince of Dreams that tried to come and stop the Nightmare from perpetuating. But all of them fell for the same trick. All of them ending up just like the Princess on her lap.

The former Prince was barely dressed. Only really wearing a bikini that dug into his feminine features. His pitiful penis still remained, despite his newfound femininity. Because it didn't matter. He was still a Princess. A Princess of Nightmares, utterly devoted to the one he was leaning against.

She was the one that ruled. She was the one that had claimed him. Turned him into a Princess. And gradually giving him more slutty sisters to mingle with. They were her Princesses. Her toys...

This was the Nightmare that the King of Nightmares wanted. A world just for her.

A world of true debauchery, as she continued to lure in all the Dreams that she would make hers...