[Brain Drain, Cock/Ball Worship, Femdom]

Gudako was a very patient girl. Considering she had the difficult duty of trying to save Human History from being incinerated, as well as dealing with all of the other problems that arose not long after that, patience was definitely a virtue. Especially in regards to the feelings that she had developed for the Servants that were in her employ.

"Ooops! Sorry, Master! You wanted to do something with Corday?"

Which was why it was very out of character to see her in shock as one of the few male Servants in her employ, Astolfo, had gone ahead and caused problems again. In this case, it was almost like he tried to personally attack her. How else could she describe the sight of Charlotte Corday looking like she had been drugged into an unbreakably pleasure-filled state, all while her tits and her face were completely covered in Astolfo's cum?

The boy had managed to steal away the girl that Gudako planned to confess to. Corday wasn't the most effective Servant, not by a long shot, but she was a sweet girl that just wanted her Master to be happy. So to see him cumming all over her like this caused something to break inside of the young Master's head. She didn't respond to Astolfo's giggling words, nor did she stop him. Not for the time being. No, she retreated back to her own room and slowly started to formulate a plan. A plan that would make sure that he could never do something like that again.

And when she had put together all the little pieces, she'd call upon him. All so she could watch him eagerly bounce towards his own demise...

---

"Ehehehehe, sorry about that, Master! I know you and Corday had been really close, but I just couldn't stop myself! You've seen her cow tits, I know you'd stuff your cock straight into them if you had a cock as wild as mine!"

Astolfo was not at all apologetic. At least, not to the extent where Gudako could truly consider him repentant. No, he was joking around and being as callous as ever. Which really just made her dig her nails into the side of her arm, gritting her teeth ever slightly as she tried to suppress her anger. She had to remain calm, at least for a little longer...

"Tell me, Astolfo. How many times have you done this? And I don't mean how many times have you fucked Corday without me knowing. I want to know how many times you've broken one of my Servants because you couldn't control yourself." The ginger-haired Master said, her voice dipping into lower octaves as she was doing rather poorly in regards to keeping her temper in check. All while her eyes lit on fire, her anger rose bit by bit.

Astolfo paused and tapped his lips. "Lets see... I've fucked Jack, I've fucked Raikou, I've fucked Corday, I've fucked all the Hassans, I've fucked Shikibu, I've fucked Ishtar, I've fucked... Oh, I've fucked everyone, haven't I?" He giggled, playing it off as if it was no real big deal. Despite the fact that his Master was currently on the verge of snapping. Such a disrespectful boy...

"Astolfo." Gudako said, the flames visibly almost burning out from her eyes as she let him see the back of her hand. "I command you. Drain your intellect. Drain your intellect. DRAIN YOUR INTELLECT!" She shouted venomously, as all three seals disappeared in succession. They'd be back later, but she was fully willing to use them on something so seemingly petty. All because of how badly he had ruined all of her potential relationships.

The Rider-class Servant nervously laughed. His Master had gotten a little... Okay, she was definitely mad. It wasn't often that he saw such a furious sight, and he really should think about what he could do now. How could he make her calm down? Oh, he had a pretty good idea. He could just-

A moan left his lips as the power of all three Command Seals started to flow through him. And little by little, it was like something really started to flow out of him. All of it slowly gathered down below, as his expression fluttered between bliss and absentminded lack of thought. It was like... Something was draining into his balls..? At least, that's where he thought it was going...

And though he wasn't able to truly see it happen, his hunch was indeed correct. His sack had swollen to the point where it was way bigger than it had any right to be. Even if he put all of the tits he had fucked together, their total mass wouldn't even come close to the sheer size of his balls. He really had that much intellect inside of his head, eh..? What a strange concept, considering his usual behavior...

Little by little, Astolfo's mind started to return to normal. "E-Ehehe... S-Sorry, Master. I'll try not to do it again. Promise." He said, really trying to sound like he was being serious. A difficult task, considering the kind of boy that he was. That, and he really just tried to step back without realizing what was between his thighs. Which resulted in him waddling and almost falling over right then and there...

"W-Whoa! What in the world?!" Astolfo cried out as he looked down at his excessively inflated sack, with a blush pouring its way across his cheeks as he heard all of that cum sloshing around inside. "What's with my balls? Master, what's going on?" It was like he had completely blanked out the command that he had received. Probably because of how much had been drained into both of those oversized silos. Both of those tanks that were just begging to be emptied.

Gudako didn't answer. She just stepped closer after putting on a pair of gloves, and then gently pushed the silky tip of her finger up against the surface of those naked balls. All so it could sink in ever slightly, and send an untold amount of pleasure through the boy that had dared defy her and ruin her like this.

Astolfo felt the shock rush through him. And for the first time in his life as a Servant, he cried out in sheer delight as the tip of his cock erupted. Cum started to spew forth in excess as not only was his Master given a good glaze, but so was the rest of his body. He couldn't even really move as the sheer act of climaxing like this completely locked down his motor functions. The concept of cumming like this made him cry out louder and louder... And all she had done was touch him.

"That's it... Just cum it all out." Gudako giggled, as she wiped a bit of that cum away. Her anger had mostly left her as the smell and scent of that musky substance plus the delight at seeing him writhe and scream in pleasure... Yeah, it had basically just turned her horny instead of angry. Which was honestly preferred, considering how venomous she could be whenever she was too angry. "You're going to cum everything that you've converted into seed out. And then you'll be left as stupid as you think all of the girls you fucked were..."

Astolfo wanted to try and protest. He never thought that they were stupid. Far from it. But at the same time, he couldn't say anything because he was still cumming like mad. In fact, just having her insult him like this and make it seem like he was way worse than he truly was... It was making him get even more horny. And that meant that his cock throbbed and trembled and it just wanted to release more of the cum that contained his intellect.

Gudako laughed as she watched him try to fight back against his own pleasure, before she carefully rubbed her hands against one another. Several tiny runes started to glow along the fabric of her gloves, and she couldn't help but grin. It was a little trinket that she had Skadi enhance, allowing her to finetune the kind of pressure that she inflicted with her fingers. Whether she wanted to completely crush somebody's throat, or only offer the gentlest of nudges when she just wanted to tease somebody. She had intended to use these on Corday, but instead...

"Come on. Keep cumming. You know you want to!" The ginger-haired Master didn't hold back once she was warmed up. She pushed her fingers up against those balls, merely squeezing her fingertips ever gently into the enormous sack. But thanks to her gloves, it felt like she was putting much more pressure on them. And in turn, it helped trigger the kind of sensitivity that now characterized Astolfo's balls.

The pink-haired Rider immediately felt another orgasm wrack its way through him, resulting in him crying out in sheer delight. All while he felt the balls between his thighs doing their best to shrink as more and more of his cum was being shot out into the air in such a useless and worthless way...

It felt so good. It felt so good to waste it all. At least, that's what the kind of pleasure that rushed through him was telling him. And the more that he fired off the cum that held his intellect, the more he was inclined to agree. So much so that he even started to thrust his hips forward bit by bit, panting and gasping and crying out in desperation. All while he just wanted to cum all over again. He wanted to cum and cum and cum and cum!

His Master was happy to help him do so. Her gentle rubs transformed into the best kind of stimuli that he could ever experience. Which meant that he was cumming rapidly with every breath that he drew. His desperate release was drawing closer and closer with every moment that passed.

Because of course him cumming over and over, with his tongue sticking out of his mouth and his eyes rolling into the back of his head wasn't even close to the kind of climax that would leave him completely stupid. No, he needed a stronger orgasm.

Even having his Master's lips pushed up against those massive silos full of cum wasn't enough to force him to have that special kind of climax. It just made him writhe and cry out more and more. All while they slowly but surely shrunk as the contents poured out more and more.

His Master's room was now practically smothered by his cum. Whether it was dripping down from the ceiling thanks to how powerful his orgasms had been, or because it had splashed across the furniture thanks to that very same intensity. And while the room was smothered, so was she.

The remnants of Astolfo's cum was now little more than glaze that made a room dirtier. Which, granted, was what he did normally too. Whenever he fucked one of his Master's girls, he always ended up making a mess. Whether it was inside of somebody, or the room that he had been using as a nice cozy pleasure den until he managed to climax.

It really made it seem like he was just enjoying another loving night with one of those girls. But this would be his very final night of pleasure. There was no way that he was going to have the same kind of experience ever again. No, the only thing he would be experiencing or even consciously recognizing was the sheer concept of pleasure. He wouldn't be able to register anything else. Whether it was his surroundings or his partners, all that mattered to him as he grew stupider and stupider was the way that the pleasure just kept on bouncing around inside him and reducing him to little more than a fountain for cum to pour out through. Ah, it felt so good to cum. He never wanted to stop, never ever!

As he crept closer and closer to the orgasm that would completely ruin his mind, his Master felt that she could go a bit further. After all, if he was just left completely mindless then there wouldn't be any fun to be had. Because then he'd just be standing around as a piece of decoration. No, she needed to make sure that all of the other Servants understood exactly what he was meant to be used for. And thanks to the particular runes used on her gloves, it wasn't hard to start writing on his balls.

Little by little, the energy that made her gloves so special started to leak their way onto the surface of the Rider-class Servant's nuts. And the energy took on the shape of a few degrading letters. Most importantly the simple statement '0 IQ' right across the two balls. He didn't need anything more than that, frankly. Maybe a little 'X' over the IQ to remind the people that saw him that he couldn't even be considered that kind of meagerly intelligent. He was nothing more than a cum tap, really.

Which was exactly what she wrote along the two sides of his cock. 'CUM TAP 'stretched out so there was no way that you'd be able to miss it if you were to see his cock. You'd instantly recognize its true purpose, and assuming you had been with him in the past, you could now take advantage of the boy's new purpose and quickly deal with the thirst inside of you. What a handy and convenient use for something so horribly erotic and something that had ruined her life so many times over.

Of course Astolfo was feeling all the pleasure that came with being written on like that. His eyes were practically spinning inside of their sockets, stopping every now and then on a couple of obvious images. A couple of cocks, like the one that was currently spewing forth his remaining and meager intellect. A pair of tits in each eye, which just made the squirting even more powerful as it was like he was being squeezed in between a massive pair of milkers. And finally, 'FREE USE' inside both of his eyes as his cock throbbed and grew a little in response. His balls being emptied and gradually shrinking meant that somebody would need a little extra for him to properly service them, and an extra bit of length certainly helped in that regard.

Gudako gave those balls another kiss, watching the cum fly out above her, all while she pulled herself away ever slightly. She could see him trembling and cumming. But she would still need to put the final touches on him before she could consider him done. And the best way to finish him off would be to get him involved...

"So, Astolfo. What do you say? Are you sorry for what you've done? Or do you just want to keep cumming and forget that you ever did anything bad, since a cum tap like you doesn't need to worry about that stuff?" Gudako asked, all while licking the cum that had dribbled onto her gloves. She just needed a simple answer. A nod or a shake of his head would do.

Astolfo stared straight ahead as the flow of his cum started to taper off ever slightly. All while his eyes focused on the sight in front of him. The sight of his Master... Licking away at his intellect-filled cum. And there was only one thing that he could do after that.

The young Rider-class Servant let out a powerful cry and a scream that truly made his current state of mind echo out. All while a proverbial river of cum blasted from his cock, his balls shrinking massively in a matter of mere moments until they were the size of a basketball. All while he just let it all pour out.

His experiences. His consciousness. His intellect. Everything that defined him as a Human, much less a Servant, was now being rendered as little more than sticky globs of white goo that splattered against the walls. He truly could do nothing more than cum and cum until he was completely and utterly empty. His hips thrusting forward worthlessly, all while his entire existence was rendered completely null and void...

And when the cum finally stopped splurting out from his urethra, there was nothing left behind except a giggling pink-haired femboy who couldn't remember his name, nor even really think in general. He truly was nothing more than a cum tap. Ready to release more and more of the cum that was bubbling and churning away inside of his balls...

Gudako pulled the gloves off her hands as she tossed them at his balls, causing him to harmlessly moan and squirt out a bit more cum. And yet he didn't react any further than that, truly showing how far he had fallen. There was literally nothing left of the boy that just kept on fucking like his cock was dragging him around the place. Just a human-shaped dispenser that kept on letting out more and more of that sticky goodness as long as it got the nudge that it needed...

Now, truth be told... Milking all of that cum from him had left her more than a little horny. Which was why she started snapping her fingers, to make sure that she got the attention of the ones that were waiting outside of her room.

One by one, more and more of the girls that had either been smothered by Astolfo's cum in the past, or stuffed full thanks to his relentless rutting, made their way inside. And one by one, they each started to lap up the cum that was either covering the room or covering his cock, which naturally caused more to squirt out as these hungry ladies indulged their needs.

This was his new reality. Doing nothing, except providing for these horny ladies' need for his cum. All while his Master masturbated at the sight, beyond delighted and satisfied...