"Do you know what Erectile Dysfunction means?"

Tsunade stood in the middle of the medical room as she overlooked a clipboard that was currently in her hands. She typically didn't handle these problems that involved a male's genitalia.

But when the patient was her beloved brat, Naruto Uzumaki, she would have to make an exception.

"Is that when your penis stops working? Shizune-neechan told me a little about that when she tried to take care of it."

Yes, Shizune.

The poor girl tried to deal with the problem herself. But she was far too inexperienced to deal with it herself. Even going so far to try her own personal touch to cure him. However, she hadn't realized how fertile and healthy he was. So when Shizune came busting shrieking through her doors covered with semen head to toe, she had no choice but to answer the call.

Shizune was also going to be in the therapy ward for a few days after all this.

"Yeah that. But the problem with you is that we have the exact opposite situation occurring." She remarked before an idea popped into her brain.

"Hmmm…"

"What is Ba-chan?"

"How long have you had this problem?" She asked him.

"Ummm about a month now?"

Whatever Tsunade was going to say next didn't matter when she heard his response. In fact, she didn't say anything as her eyes bugged out wide as her jaw was left hanging in shock.

"E-excuse me!? What did fuck did you just say?"

"A month…" his voice suddenly became a lot quieter as he repeated the answer.

"A month!? Something like this lasts a few hours! Maybe a day at most. But a fucking month!" She exploded at him. "You should have come to me with this a lot sooner than a month, Naruto!"

"S-sorry, it was just too embarrassing to talk about. But the pain was just getting too much."

"When did this start?" She inquired as she relented on his stupidity.

"When I lost my virginity and had sex for the first time with Hinata-chan. It kind of goes away when I cum but it just eventually comes back up."

"Your month-long erection is definitely concerning. How many times do you masturbate a day?"

"I think I lose count after five."

"God damn. I know of men that like to do it three times a day but a minimum of five!?" Astonished by the amount he had to masturbate just to keep the pain away.

"The diagnosis shows that blood is still being pumped into the phallus. The problem is that no blood is being pumped out of it which shows it's being clogged up. However, the tests show that when having an orgasm, the blood stream starts to perform normally, if only temporarily."

Naruto could help but blush as Tsunade pointed towards the tv monitor in the room. A video of Shizune trying to give him a blowjob played. Her head bobbing up and down the long shaft proved nearly impossible for her to deepthroat. It wasn't long before Naruto took the matter into his own hands and he suddenly gripped her hair and began facefucking her. He fucked her mouth until the point that he had his orgasm. What he didn't expect was to let the grip on her head get away from him and his hands slipped off her head as a torrent of semen blasted into her. Whatever happened next seemed like a scene of a hentai as the cum surged into her and caused her to launch off his dick and straight into the wall.

"There is nothing that is abnormal about the blood cells nor is there anything wrong with the vessels. I think we would have long been caught if you had any type of sickle cell disease and I highly doubt the Nine-Tails would allow such a thing to happen. So we can cross priapism off the list."

"And you're a perfectly healthy male specimen by all accounts." She continued.

"Do you think this might have anything to do with Kurama being inside me?" There were still a lot of questions that were undiscovered about Jinchuriki especially when one lived within him without the use of a seal.

"Possibly. Can't ignore that possibility especially since you are the first and only male to house the Nine-Tails. Your father withstanding."

"But I have a theory…"

"What is it?"

"We just need you to come very very hard." She told him, laying it on thick.

"... Isn't that what we've been trying to do?" Questioning her supposed theory.

"True, but I think it will require a series of rapid orgasms. Essentially we need to over stimulate your cock."

"But Shizune-neechan tried that and it didn't work." He reminded her by pointing at the video of the failed attempt by Shizune.

"That's because we need something stronger. Hinata doesn't have the stamina to last more than a round with you so that wasn't enough," Tsunade said as she started to fiddle with the buttons on her doctor's coat. "And the nerves on your penis got too used to Shizune's hands. The first time it only took a few minutes for an orgasm. But after the second time, it took thirty minutes to an hour. That's not fast enough to release the pressure all at once.

"Errr… What are you doing?"

"Taking matters into my own hand," She said as she actually gave him a seductive wink.

"But you're old! I don't want your wrinkly skin all over me!" He said aghast.

"Thank you for stating the obvious," Tsunade remarks dryly as she was suddenly mirthful with the boy. "But why do you think I have wrinkly skin?

"Because you're like sixty years old!

And? Did you forget I'm a Senju and an Uzumaki?

"Uhhh… what does that supposed to mean again?"

"God damn it Naruto. It means that my vitality and youth are probably on par as yours which means that we age slower than the average person. I might be sixty but physically not even forty yet. I just tell everyone that I use genjutsu so people won't get jealous."

"So you're a MILF not a GILF?"

"Yeah sure. Let's go with that."

"Oh! That's neat!"

'Yes, very neat. Now can I get started or what? And don't tell anyone about this by the way. Bad enough we scarred Shizune with how much you came all over her." She said as she pushed her finger into his chest with an accusing glare.

"I told her I was sorry!" His apologetic tone was enough to get her off his back.

"You're so fucking lucky that I love you, shitty brat. I haven't done anything remotely sexual since taking the hokage position," She said, hoping that her previous experience was enough to cover up her current and rather uneventful sex life.

"Haven't you been retired for over a year now?" Naruto wondered. If what she said was true, then it couldn't be that hard for her to get some dick.

"Well when everyone actually believes that the genjutsu is real, it suddenly makes it a lot harder to find a man apparently. Everyone thinks I'm literally an old hag," Tsunade told him as opened up her coat and tossed it behind her.

The disregarding of the coat revealed that a green strap top that was already causing him to have a nosebleed with how revealing it was. It hugged her chest tightly with a deep v neck right in the middle that exposed her legendary assets in full display. A generous portion of her endowed J-cups were in full display with the amount of cleavage that was sticking out. In fact, the top might have been too small for her as her large breasts looked like it was ready to tear the fabric into two. A pink hue near her nipple area shows a partial nip slip as her areola was exposed for his eyes to see.

As much as he wanted to stare at her famously large breasts, Naruto couldn't help himself as his eyes drifted lower to peruse her curvaceous frame. She was absolutely fit, her completely flat stomach and narrow waist was proof of her excellence. The black skirt that she was wearing underneath was far shorter than he could ever imagine. The wide birthing hips help compliment that large booty that Tsunade had been secretly packing back there. The skirt was so short that Naruto wouldn't be surprised that if she had turned around, Naruto would be able to get a glimpse of the large posterior that would be sticking out.

The outfit did little for the imagination.

And to Naruto surprise, Tsunade grabbed both sides of the skirt before lifting and revealing that she wasn't wearing any panties underneath. A soaking wet pussy was naked before him to see as it looked it was itching to get fucked with how much it was quivering. To push it even further, Tsunade stepped forward as she started to climb into the bed with him. Too shocked to do anything, he watched as she mounted herself on top of him. Straddling him, her wet folds were just mere inches away from his throbbing cock as he could feel the heat radiating from her groin.

"W-what are you doing?" He asked her as this was the last thing that he was expecting. He was expecting something like a blowjob. How could he not when she is literally called the legendary sucker!

"We both know how this is going to go. I'm a professional and we don't have time to pussy foot around. I played with myself beforehand, knowing what I was getting myself into. This is about you and getting this erection down as fast as possible."

Naruto cooed when Tsunade started to lower herself and her pink lips pressed against the enormous head of his penis.

"Any objections?"

"N-no!"

"Good. Now let's get - Ahhh!" Whatever she was planning came to a screeching halt when her foot decided to slip and caused her to lose her balance. Everything happened too fast to react and Tsunade accidentally pressed her entire weight down and shoved the horse-sized cock right into her snatch. She felt her breath vanish as she felt like some had pinched her gut but from the inside. Everything turned white for a split second, turning light headed before reforming her consciousness.

"F-fuck! I don't understand how something this big somehow feels bigger inside," Tsunade frothed from the accidental slip in. It was bad enough that the girth was thick and wide, but the length was the true killer when she could literally feel something distended.

Was that her womb that was sticking out of her stomach? And was that her ovaries as well?

"A-are you in my uterus!?"

What the fuck!?

"Uhhh… No?"

"Then why can I see my ovaries sticking out!?" She said looking down to see her womb conveniently pushed out of place and stretching beyond its normal means. The outline of her ovaries sticking out like a poor thumb.

Naruto didn't know how to answer, especially since Jiraiya never told him how to deal with a situation like this. In a panic, he did whatever came to mind first so he launched his arms and gripped on to her breeding hips.

"W-wait! What are you doing? You need to give me a sec - Ooohhh!" Tsunade moaned loudly as Naruto began to move his hips and started to hammer away at her tight pussy.

Holy shit! Holy shit! Holy shit!

"Naruto stop! You need to slow down! You're going to break my pussy!" She begged him, but Naruto was so absorbed into the nature of his lust that her pleas went unheard. Instead, Naruto continued to pound her tight vagina, forcing the muscles of her vagina to flex around his thick girth. The inner walls of her pink folds clamping harder into a vice grip, but that was exactly the medicine that he needed. The tighter the better and his dick needed all the pressure to blow the big one.

"Fuck! Too big!" She gasped out as Naruto continued to ravish her soon to be broken cunt.

"Oh God! My poor pussy! It's broken!" She screamed out with a howling orgasm.

He didn't care if she orgasmed and exploded her womanly juices all over his cock. This was about him and pain staking needing to have his own orgasm. So he didn't dare think to stop when Tsunade came. Nor did he stop the second time around she had come again.

Or the next one or the next one…

Actually, it was starting to become a detriment with how easy it was sliding in and out of her pussy. His girth and her wetness was slowly making it looser which was the exact opposite of what they needed.

H-hey! What are you - Gurkk!" Just when Tsunade thought she could regain her breath, Naruto snatched it away when he pushed off her hip and snaked his hands around her petite neck. Without hesitation, he applied pressure around the neck and started to squeeze the lungs out of her. Sputtering, Tsunade began to choke, but that was exactly what he needed when he felt her body tightening up. The gaping walls came clamping down harder than before and Naruto came instantly when it did.

With a husky grunt, Naruto unleashed his load into her and began to fill her womb with his seed. Naruto looked down to see the outline of her womb gulping down his cum as it filled her ovaries. However, the problem was that his cock remained erect even after what could be called the best orgasm of his life. But he still had plenty of stamina and he was sure that Tsunade could handle more.

He was going to break his dick if it meant that he would go back to normal.

Naruto didn't know how many times he had cum inside of her, but they had spent the last few hours fucking.

By the time he was done with her pussy, she laid on top of the bed, unmoving aside from the occasional twitching. She barely hung on there but she was too exhausted to even lift a finger. It didn't help that cum swished in and out of her womb, her belly swelled with his jizz. Her vagina had turned into a complete trainwreck with how badly Naruto ravished the abused hole. The pink supple lips were gaping wide and the walls had turned to a reddish color from how sore she had become. Cum oozes out of it and it doesn't seem to stop anytime soon.

Naruto sat beside her distraught as he looked down to see that his cock was still erect after all that.

That was literally the best feeling that he ever had in his life, but it still wasn't enough to calm his dick down to its regular state. Naruto almost felt defeated when he started to limp, only for the blood to pump harder. His cock instantly went back to its stiff and rigid state. But now her vagina had been overused with how gaped and sore it had become. Sure, it would eventually recover with her skills as a medic, but her sanity was currently indisposed at the moment.

If Tsunade's tight pussy wasn't enough then what would?

Then Naruto remembered a wise quote that Ero-sennin once told him when they had visited a brothel to seek out an informant.

"You see all these fat ass bitches in this brothel Naruto? Ain't no reason to have a fine ole booty if you can't fuck their assholes. Ain't nothing tighter than anal sex."

Anal never really crossed his mind as Hinata and him were more a vanilla type of people.

Well fuck it.

What did he have to lose at this point?

Tsunade was essentially a ragdoll as he easily flipped her over on the medical bed. Semen gushed out as her stomach plopped on top of the bed. Everything in her head was scrambled as she barely registered that Naruto had pinned himself on top of her.

What she did recognize was when his looming and hanging cock decided to press against something that was definitely not her vagina.

Her eyes damned near popped themselves out of their sockets when the fat tip of his cock started to deeply rubbing the entrance of her puckered hole. The fat cheeks that surrounded her back door instinctively jerked back and tightened the ring around her anus to prevent the intruder. However, everything in her body failed to function properly as she opened her mouth to protest. Tsunade attempted to tell him that was the wrong hole.

"Bwahhh…" Was all her brain could muster in her cock drunken haze. The effects of the mind rendering sex had practically left her speechless.

At this point, there is nothing that Tsunade could do to prevent Naruto at this state of their affair. Naruto in a desperate plea to end his suffering, had zoned into the one thing that might be able to save him. And when Naruto felt how tight the forbidden door was just by pressing against it, there was nothing that was stopping him now.

"Nnnn Gggg!" With a pain that flashed briefly, Tsunade squealed like a snorkeling pig when Naruto dropped his entire weight on top of her body. Her ass was not prepared for Naruto to drop straight down. Her poor little anal ring stretched radically around the entrance as his wife girth busted down the doors. His meaty flesh came pouring in through the stretched hole.

Thankfully, his length had been lubed by the combination of saliva, juices, and cum. The shaft was able to slide itself into her soft bum. She couldn't imagine how badly it would have been if he went in the dry. It was already tight enough as it was in spot how badly the initial stretching was. The inner walls of her rectum clamped infinitely harder than her pussy ever did. It didn't help how absurdly long his cock was as it felt like more and more of his flesh was entering her poor anus. Tsunade groaned and mewled as the cock reached deeper into her bowels and started to mess with her intensities. He was pushing it deep enough where stuff that shouldn't be moved was being rearranged and her stomach consequently churned.

It felt like an arduous process that she just went through that seemed like it went on for hours. But in reality, only a second had passed by and once the reality set inside her, her mind went into overdrive.

Her nearly limp body froze to a standstill as her brain still tried to register the taxing penetration. Her upper half remained limp and near unresponsive. However, her lower half understandably went stiff and rigid. What Naruto didn't expect was for her body language to suddenly change on the dime. Shock coursed through her veins and injected straight into her spine. Her legs started to jolt from its stiff position before it started to spasm out of control. The lips of her gaping pussy quivered uncontrollably before a fountain of juices gushed alongside any semen that had remained inside.

She had just orgasm from having her asshole penetrated by his fat cock. Her sphincter was secretly her most sensitive spot which was she tried her best to prevent me from going inside of there. Doing so was the only reason she hadn't become a mindless anal whore but that was thrown out the window when Naruto went full renegade. As if it wasn't bad enough before, but when Naruto started to pump into her with ruthless aggression, Tsunade might as well throw in the white towel. Each earth-shattering thrust for her poor pussy to tremble in excitement. Losing full control of her body, she could do nothing as constant rounds of mind numbing orgasms had turned her brain into mush.

She was at least glad that her fat and pillory ass was cushioning the powerful slams of his pelvic thrusts. If not for plump bubble butt, her already buckled hips would have been grinded into bone dust. The violent ripples crashed down her soft and supple flesh as Naruto clapped her with a thunderous slam.

She was being run into the ground as her breath turned haggard in exhaustion. She was being fucked into becoming a stupid slut with her tongue rolled out like a dumb whore. With eyes pushing back against their sockets, she was beginning to fade fast as the white fade began to encompass her vision.

Thankfully, Tsunade didn't need to hold out for much longer. With his pounding becoming sporadic and uncontrolled, Naruto's cock was losing itself as the cock grew stiffer than before. His testicles ached like never before as it pulsated faster than a heart cock had never hurt this badly before, the tension of her ass had created a massive clog of pressure that was accumulating inside his dick. But it was an agonizing pain that his cock desperately needed as an exploding orgasm surged through.

"Fuck!" Naruto let loose a long awaited howl as he came harder than he could have imagined. Whatever orgasm he had before paled to the volcanic eruption of swollen balls. A thunderous torrent of semen flooded the insides of her bowels. Neither was expecting the astronomical amount that was pouring into her anus and straight into her stomach. The amount exceeded the already full storage and the last thing that Tsunade saw before fading out was the spillage of cum that was beginning to pour out of her mouth and nostrils. By the time he was finally down cumming, her already swollen belly had ballooned to the point where she looked like she was ready to give birth.

But the relief that followed afterwards made everything worth it. As he pulled out of her gaping asshole, the tension that had been constantly there had finally vanished. The orgasm was the most painful experience he had ever felt even more sore than getting stabbed by a chidori. But the feeling of utter bliss that came afterward was heavenly.

Naruto had never been so happy in his life to see a limp dick.

"Holy shit that worked Ba-chan! Look! My penis is back to normal!" He cheered excitedly as he jumped around the room happily. The exhaustion of fucking Tsunade seemingly disappeared as a second wind overtook him. He excitedly started to shake her, not noticing that he'd fucked her into unconsciousness.

"Uwahh?" Tsunade couldn't dignify with a response as the thick seed was still spilling out of her esophagus.

"I can't wait til I tell Hinata!" He told the unconscious woman before rushing towards the door, not even caring that he was still naked.

He swung it wide open to reveal a woman standing behind the door that was listening to them having sex the entire time. Revealing themselves to be his girlfriend, Hinata, she had nearly stumbled forward, not expecting the door to open.

"N-Naruto-kun!"

Before opening to reveal that his girlfriend actually came to see Tsunade with him. She had been patiently waiting outside the room as Tsunade took care of him. And of course, the room wasn't soundproof so Hinata could hear every exact detail that was happening inside. Combined with the Byakugan, Hinata was essentially getting a free show as she dropped her hands into her loins.

"Hinata! It's perfectly normal now! Look!" Naruto told her with a giddy voice and was unsurprised to see her behind the door. As if seemingly knowing that she had been spying on the two the entire time.

That or he just stopped caring after a certain point.

R-really!? That's great news!" As she swiftly stood up from the floor as she tried to adjust her clothing as quickly as possible.

However, at this point, Naruto didn't even care that she was masturbating while he was having sex with another woman.

"Now we won't ever worry about having sex again.

"That's amazing Naruto-kun!" Hinata said with genuine excitement. She thoroughly enjoyed her alone time with Naruto, but she just didn't have the stamina to handle his absurd medical condition.

But now she doesn't have to worry about that!

She needed to thank Tsunade for doing them a solid.

She was a complete trooper.

Hinata wondered if Tsunade could still get pregnant. After that whole spectacle, it would be near impossible if she wasn't.

"Yep! After today, I will never have sex again!" Naruto loudly proclaims before marching off back home.

"Yes! That's…. What? What did you say about Naruto-kun? W-wait! Don't leave! We need to talk about this. Let's be rational about this. You also forgot your clothes!"