[ABDL, Humiliation]

"I have to win the War... I have to. Otherwise... Otherwise everything that Father did will have been in vain..."

A young man stood in a dark room, with the only thing keeping the room ever gently illuminated being the circle in front of him. All while he gently held a chain in his hand. A golden chain that had been preserved throughout the ages...

The youth's name was William. And he belonged to an English clan of Mages. And with how his Father raised him, he thought that he would be destined for greatness. His Father was a powerful Magus, so he always wanted to be like him. Always wanted to follow in his footsteps, no matter how much his Father told him that he just wanted a happy life for him...

He quickly came to discover why his Father was so hesitant. And why his Father was the only one to raise him. He... He met his Father's Mommy. And the other Mommies that cared for Father. Mommies that were going to take 'good care' of him as well. He managed to escape, with the chain that his Father had always told him to keep near and dear, especially as he trained him in Magecraft.

After that encounter, and after gathering a few books from his Father's personal collection, William discovered the truth of his bloodline, and his inherent nature. And it was all thanks to a cocky ancestor of theirs.

His bloodline was cursed to be babied by appropriate Mommies, once they had awoken to their potential as Magi. And Father had done his best to endure that treatment. His very best to keep him away from them. But his luck ran out. And thus William was on his own. Filled with a need that he couldn't deny, yet he had to resist as much as he could for the sake of removing the curse.

Which was why William now stood in front of this glowing circle. Why he held the chain tightly. It was meant to be a catalyst for summoning a Servant from the Throne of Heroes, so that he could join the Holy Grail War and grant a simple wish. To be rid of this curse, so that he could be with his Father again without being babied. Even if...

William shook his head as his thoughts started to drift, and wiped away the softest trail of drool that ran down his chin. "I-I mustn't give in." The curse was powerful. Instilling a sense of withdrawal within him whenever he was away from a caretaker. Whenever he stayed away from Mommy and tried to act like an adult.

Hopefully, this chain would summon a mighty Hero that he could rely upon. A Servant that wouldn't be affected by the curse. One that could lead him to victory..!

The glow intensified, prompting William to hide his eyes so as not to be blinded. All while he could feel the presence of another appearing within the circle. It seemed as if he had been successful. Somebody... Somebody had answered his call...

"Servant. Lancer." An androgynous voice spoke, as the magic that sustained the circle died down. And a link between the Servant and their Master was established. One that filled William with a certain kind of warmth and security. "I ask of you. Are you my..."

William opened his eyes as his Servant stopped speaking. He felt the slightest chill as they did, but he still needed to ascertain the identity of his Servant. They sounded rather... genderless? Or at least, on the border between female and male. He was aware that Heroes from the past were on a completely different level than the people of the modern day, but this one seemed to be a special case even beyond that.

His Servant was clad in a white cloak that obscured most of their body, and green hair grew from their head as it reached all the way down to their hips. And while there was a certain feminine charm to their expression, there were definitely more masculine features as well... It'd be rude to assume things, but it definitely seemed like he had summoned a male. Or at least, it didn't seem like they were female enough to be affected by the curse...

"Thank goodness..." William muttered as he stepped closer. "Greetings, Lancer. I am William. Your M-"

Before William had the chance to finish what he was saying, the green-haired Servant wrapped their arms around him and smiled. A much more maternal and caring smile... Oh dear. Oh no. He knew that kind of smile. He thought that he was going to be free from this treatment, and yet his Servant seemed eager to treat him just like that as well...

"My dear, sweet little Baby." The Servant said, as they carefully ran their hand through the adorable young man's hair. His gentle mane of blonde hair, that almost matched the Servant's. If it was longer, they'd be the spitting image of one another. "You needn't worry, my child. Daddy Enkidu is here to protect you."

Enkidu. Father had told him about a few of these Heroes. Enkidu was less of a Hero and more of a weapon, a tool that stood by King Gilgamesh' side. As a result, he didn't have a gender in the traditional sense, even while presenting in such a masculine way. And yet here he was. Calling himself Daddy. Calling himself such a powerful and affectionate thing, which made it harder for William to resist him...

It didn't help that the longer that Enkidu held him, the more Daddy seemed to grow. It was like he was twice William's size... Towering over him and holding him gently like he would a baby. And William couldn't exactly find the strength to struggle, all thanks to the curse that ailed him.

"E-Enkidu..." William tried to say, looking up into his Daddy's eyes. "I-I don't want to be babied. I... I'm your Master. We're supposed to be fighting in the war, so that I can-"

Yet again, Daddy cut him off. This time, it wasn't by pulling him tight. Or by shutting him up in general. Rather, it was by lifting up his cloak to reveal his chest. His flat and masculine chest, which he no doubt bared plenty back in the day...

But to William's surprise, that flat chest started to grow. Expanding outward, as he swore he could hear the growing bosom fill up with milk. Enkidu was made out of clay and had the ability to alter his body, yes, but to have him change part of his form into something so feminine... It left him utterly speechless...

"Hush, my child. My adorable little Baby." Enkidu's voice grew more and more caring and more maternal with every word he spoke, as he helped William closer to his breast. Not quite forcing him to suck his nipple, but rather pushing him close enough to it to imply what he wanted from the boy.

William didn't want to be babied. And yet the curse inside him... The curse inside him made him tremble and obey what was in front of him. And thus, he latched onto his Daddy's nipple. Suckling very slowly, as he tried his best to fight back against the curse's effects on him.

His resistance quickly faded as he felt his body growing nice and weak in response to the warm liquid pouring down his throat. It wasn't just milk. It was one of the best liquids he had ever had the pleasure of tasting. He could feel his body crying out in delight as he swallowed more and more. To the point where he grew a little too enthusiastic, a bit of milk forcing its way out of the gap between his lips and the nipple and drooling its way down his chin...

All while Enkidu continued to carefully caress him and rock him back and forth. Daddy wanted the best for his adorable little Baby. He also knew that this wasn't how his relationship with his Master was meant to go. But the curse was twisting his mind and making it feel right. After all, he was a tool... Nay, he was a Daddy. A Daddy that was meant to care for those that needed protecting. Even his King, if the situation required something so intimate...

This was why he let his free hand whip out. Sending chains through the darkness, deeper into the manor that he had been summoned to. And before long, the chains returned with what he required. The garment that was missing from his Master's body...

William was pulled off the extra milky nipple moments later, his vision growing blurrier and blurrier as a result of all the milk inside his body, and all the care that he received from his Servant...

Which left him utterly vulnerable to his Daddy putting him down on the ground and stripping him bare. He didn't even notice the fact that he was naked, not before he felt the crinkly infantile garment wrap around his waist. As well as Daddy's fingers pressing up against his crotch...

"H-How... W-Why..?" The babified boy questioned how Enkidu had acquired a diaper, and why he was naked. But he couldn't properly articulate. Not with all that milk inside him. All he could do was stare up at his Daddy, as the curse intensified further and further. All while making him feel more and more shame in turn. He couldn't believe his Servant... H-His Daddy would treat him like this...

Daddy Enkidu smiled down at him as he gently patted the front of his Baby's diaper, which was now adorned with the Command Seals that the Baby had at his disposal. "Ssssh. It'll all be okay. Daddy's here for you." He said, in that soothing and comforting tone that was so intoxicating. All while keeping a single hand on his 'Master's crotch...

William let out a soft moan as Daddy rubbed his naughty spot. It felt... It felt even better than it ever would've if he did it himself. Which made it all the more humiliating, because he wasn't even getting stroked directly. He was getting Daddy to rub his little baby cock through his diaper...

The softness of the padding, plus Daddy's warm hand, plus the vibes that poured through him thanks to the curse... All of it mixed together, and William blew his load quicker than he should. All while his cheeks flushed bright red, and he felt even weaker than before...

His climax caused part of his diaper to grow nice and sticky... Though not quite as wet as the quiet hissing did moments later. Indeed, he had wet himself from cumming. And it felt... It felt good to wet himself. He didn't want to admit it. Of course he didn't want to admit it. But it felt good. It felt really good.

"That's Daddy's little Baby. It felt good to let all of that out, didn't it?" Enkidu chimed, giving that wet spot a little rub while prompting a moan from his adorable little Baby's lips. A moan that was cut off by a pacifier appearing in his mouth. "There there. You can suckle on your paci if it feels so good, little Baby." He said, further humiliating the Baby by denying him the chance to express his pleasure in an adult way.

William did as Daddy asked, suckling slowly as he gazed up at the green-haired Daddy. All while Daddy carried him out of the dark basement, into a much brighter colored room. Even if that very same room was still nice and dark, because it was nap time...

He was in a nursery... A nursery that had been his room just moments prior. The curse was affecting more than him. All thanks to how he was submitting to it. And Daddy was going to make good use of it, laying the Baby down into his crib...

Enkidu gave his adorable Baby a kiss on the cheek, before raising the bars and smiling down at him. "Sleep tight, little one. Daddy will make sure you stay safe. Then you can wish for Daddy to be with you forever, once we win this war." Even with the curse affecting him, he didn't forget the reason why he was here. Even if his purpose was still twisted...

Not that William really paid attention. Being in this soft crib made it hard to keep his eyes open. And before long, the babified Master drifted off to sleep in his wet diaper. Filled with shame over being babied, being made to drink Daddy's milk, and being made to cum in his diapy...

He had gotten a taste of his bloodline's curse. And his chances of breaking it, even if he did win this war, were growing slimmer and slimmer the more he submitted to its whims...