Chapter Text
Naruto being Naruto was annoyed as sat on the medical exam room table whenever he came in for these routine checkups. He was irritated because he had been waiting for quite a while now ever since Shizune came and told him that Tsunade-sama would be with him shortly.
Naruto noticed for some reason that Shizune was both nervous and blushing when she took him to the exam room. Strangely enough, the room was on a floor which had no one apart from him and his Nee-chan. When he asked why, Shizune just replied nervously that it’s on Tsunade-sama’s wish. Naruto didn’t fret too much on it and just chalked it off as Granny with her narcissism in all these years he’d known her.
It seemed this floor was for the Daimyo and such because as soon as he left the elevator, the theme of the whole hospital had changed. The hallway was luxurious with new doors and tables.
The room itself was quite lavish but only had an exam table and a bed on the other side of the room with only a box or latex gloves and a bottle of some kind of water-based lube or gel. Not that he could tell what it was. He spread some on his fingers to play around with it. At least it smelled nice.
The time finally came when his beloved Hokage with her long stride and clicking of heels finally arrived. She was wearing a lab coat on top of her usual grey blouse instead of her usual green haori making her sizable cleavage even more revealing to the blonde Ninja. And she also had some really nice perfume on, which was unusual.
Not that he ever cared for it. Of course, her massive badonkadonks did not make him blow his loads in the middle of the night whenever he thought to or fantasized about them. Never ever.
For some reason, she was in a good mood and smiling for once in contrast to the blonde Ninja’s own irritated frown.
“What’s the matter, brat? Why the long face?”
That made him even more annoyed when he saw her smug smile on knowing she made him wait.
“Like you don’t know!”
She kept her smile and turned her back towards him seemingly putting on the latex gloves and replied patiently. “No, I don’t. Why don’t you tell me?” She pulled one glove on her hand making a snapping sound.
Naruto for one lost his annoyance which turned into curiosity. Ever since he knew Tsunade, she was never in a good mood unless she downed a bottle of sake.
“You okay, granny?”
She faced him and made a curious frown but smiled once again. “Why would you ask that?” Even calling her granny didn’t work. Was she fucking with him?
“I-Its just… You seem really…”
She closed the distance between them and leaned in close getting her cleavage right on his face level because of the angle he was in. The perfume stronger than ever now. It was making him stiff up because of the smell which of course Tsunade noticed.
“My eyes are up here, Naruto.” There was that smile again. Why wasn’t she angry?
“R-Right… It’s just that you seem… in a good mood?”
It dawned on her what he meant and she just faced the other way again not letting her facial expression shown seemingly getting busy again putting on the other glove. “Today’s a day I finally get to do something I’ve been wanting to do for a long time.”
“Oh! What is it? Is it a new Jutsu?”
“Far from it…” She said it in a small voice only she could hear.
Before Naruto could say more, she turned around having put both of her gloves on. Tapping the exam table, she said. “Alright, lay down, Naruto. And take your pants off.”
He got up seemingly to do what she said until it dawned on him what she had actually said. “WHAT?!”
“You heard what I said… Take. Off. Your. Pants.”
He was still in shock at what she said. This isn’t the first time they’ve done this but it’s the first time she’s asked something like this. “B-But why?! Ain’t this a routine exam!? Y’know…L-Like my blood levels and chakra levels and such?”
Tsunade lost the smile. “It’s standard procedure, Naruto. You’ve never had a rectal exam done before and its important. I’ve put it off long enough already.”
“Then why the fuck am I hearing about it for the first time?!!”
Tsunade was getting annoyed now which Naruto could tell by her signature frown appearing once again. “Listen, brat… I always take time off my busy schedule to take your medicals myself. Ask anyone in the whole Village if I do this for anyone else. And if I’m going to be doing this, don’t make me lose my temper. Especially today of all days, you don’t want it to happen.” There was a warning in there somewhere. “Or I will hurt you so bad not even the damn Fox will be able to fix it…”
Naruto paled after hearing that and said Fox also did, for different reasons.
“Now I’m going to ask you once again… Take off your pants.”
Naruto was sweating now but still kept an annoyed look on his face. “Fine…”
The smile was back again. “Good boy…”
Naruto took off his black and orange jacket and noticed that Tsunade was staring.
“Could you at least face the other way, granny?”
“Why? It’s not like this is my first time seeing you naked.”
He couldn’t say anything to that so kept his mouth shut until he remembered that she hadn’t seen anything from the waist down. Not that he knew of. “W-Wait… You haven’t ever seen…y’know… like my dick and stuff?”
Tsunade smiled and asked. “My my…How uncouth of you to say such a thing to a lady, Naruto-kun?”
Naruto was about to reply. “To answer your question, yes, I have seen your package. I’m a doctor for a reason, numbnuts. Now chop chop…time’s ticking.”
He couldn’t prolong it any further, he thought. He took off his mesh shirt which made Tsunade lick her lips. ‘Don’t want to ruin my lipstick. That comes for later…’
When he got to his pants, there was one problem. He had a boner and it wasn’t going down. It was already visible in his pants. He tried one last time with a whine. “Come on, granny… Is this really necessary?”
“Naruto…”
Well, he at least he tried. He took off his pants leaving him in his signature boxers but with something extra visible.
Now that was it obvious to her, she had to comment. “Oh my…”
Naruto blushed and looked downwards not being able to make eye-contact with her. “I-It happens! I-It’s not something I can control!”
Tsunade just smiled enjoying the show. “It’s a normal thing to happen. Carry on…” Deciding not to embarrass the poor boy further after what was going to happen to him today.
He took a deep breath and took off his boxers leaving him with his 9-inch rock-hard cock, darker than his own tanned skin tone. As soon as it hit the air, what little stiffness he had left was maxed out. The foreskin was stretched painfully over the semi-reddish-brown head with prominent veins visible on the thick shaft. Leaving him leaking precum all over his stretched foreskin. There was a small but trimmed patch of blonde hair above. It looked as though he kept it intentionally.
Underneath were two very big plum-sized balls with some amount of hair. His butt, on the other hand, was also quite sizable. Not that it ever showed because of the baggy clothes he wore. It was toned but it was still relatively sizable and bubbly for a man.
As soon as his cock hit the air, there was a very manly musk spread throughout the room. Naruto could tell because he came here as soon as his training ended. If he knew what was going to happen to him today, he could’ve showered before at least. Combined with his precum already being potent enough as it was.
When it hit Tsunade on the other hand, she lost her composure for a bit trying very hard to not pounce on his cock at the very same instance and sniff at the junction between his cock and his balls. She would get that opportunity, she told herself, but after she was done with him.
He was now standing stark naked in front of her trying very hard to hide his erection from her.
“What now?”
Tsunade came closer and each step of her heels was like impending doom for the blonde Ninja. “Lay down facing the other way and arch your back.” She said in a professional tone.
“A-Alright…”
He climbed on to the table now bent over and arched his back making his bubble butt all the more inviting to Tsunade.
Tsunade playfully slapped his ass which made it jiggle. “That’s quite a girly ass you have, Naruto.”
Naruto blushed and fumed. “T-That’s not something you say to someone who’s naked and bent over getting a rectal exam, granny! And what was that slap for?!!”
She took the bottle of gel and put some on her gloved hand still grinning. “Of course, my apologies.”
She was about to proceed but stopped abruptly. “Hmm, seems there’s a bit of a problem, Naruto. Due to your butt being so large, I can’t reach the opening.” That was a lie. “Do you mind spreading it for me with your hands?”
“Oh, come on, you have got to be kidding…”
Tsunade had a straight face. “Does it look like I’m kidding?” She looked at the clock in the room. “The longer you wait, the longer it’ll take to be done so I’d hurry up if I was you.”
He was already embarrassed enough as it was. He took his hands and spread his butt-cheeks wide open for Tsunade to see his anus. It was also a shade darker than his skin tone. Puckered due to his stress and he kept clenching it, but it was kept clean and surprisingly little to no hair was present. But the close proximity was making Tsunade’s breath heavy because of the salty musk seeping into her nostrils.
“Now you’re going to feel a finger inserting in which is a normal part of the procedure. Be a good boy and hold still for me…”
Somehow that dialogue sounded way lewder to Naruto than it should’ve been and it was turning him on as weird as it was for something to go inside him.
He felt his cheeks being pushed even further apart. Before he just wanted to get this over with but now…
She inserted a single index finger inside of him making a squelching sound which made him jolt suddenly having never felt this sensation before. Unbeknownst to him, was that the water-soluble gel which was used as lube had special properties.
With her finger inside of him, she gently massaged his ass cheeks, allowing them to tenderize underneath her hand which was also lubricated with the gel. Soon afterwards, his cheeks were start to twitch from all the knots being untied. It seems he was really stressed out.
She gently started moving her finger around as she noticed his breathing was getting heavier. “Seems there’s no hard masses or nodules. No signs of asymmetry present. Seems like it’s a perfectly healthy asshole, Naruto.”
“Y-Yeah yeah… Can you please hurry it up?” His boner was also begging for release and he was trying desperately to not rub against his thighs and failing.
“Hold on… I need to carefully examine it. Otherwise, there’d be no point.” Which made Naruto groan. His erection was starting to hurt.
Now instead of moving around, she started fingering him back and forth gently. The squelching sound becoming all the more prominent as she lightly picked up speed.
“Your ass is quite tight, Naruto.” She commented randomly whilst kneading one cheek with her hand and squeezing it.
“U-Uh, thanks, I guess? I-Is that a g-good thing?” His voice coming out strained and quickly turned into a moan.
She giggled at his obliviousness. “You don’t know how much important that is to the other person. You’ll learn…Soon.”
He just acted confused at that response hoping Tsunade might clarify which she didn’t.
Once she made him get used to the rhythm of a single digit, she slid another one in and picked up speed as she fingered him now using the rest of her hand to gently massage the outside of his hole.
“Have you ever heard of a prostate orgasm?”
He groaned. “A-A prostate what?”
“A prostate orgasm. You can achieve it by having your ass stimulated.”
He didn’t respond so she continued. “Do you want to come like that, Naruto? And don’t try to deny you aren’t just rubbing your hard cock between your thighs right now.”
He had been caught. Never in his wildest of dreams or fantasies would he have thought to have been there then and now. But being in the position he was in, he had to make a choice which was obvious to both him and his Hokage.
She inserted another finger insider of him which made him let out another groan which quickly became a moan as she pushed harder. He quickly answered. “Y-Yes…”
She inserted yet another finger inside his ass. “I didn’t quite catch that…”
He couldn’t take it anymore. “YES! I fucking said YES! Make me COME, TSUNADE-SAMA!”
She grinned. ‘Finally...’
“Good boy… Now leave your cock alone… No touching.”
He listened submissively and actually arched his back more and spread his legs eagerly so there would be no contact between his legs making his rock-hard phallus come into view which made Tsunade lick her lips.
Now with four fingers in his ass and her gently stimulating his buttcheeks with occasional hard squeezing. It wasn’t long before Naruto started yelling out. “More… MORE!”
Tsunade laughed and slapped his ass once again causing ripples. “You’re even more of a buttslut than I could’ve imagined!” And this time, instead of complaining, he actually moaned at being slapped.
He was getting closer now. She slapped him once again. This time leaving a red handprint on his bubbly ass. “G-Granny…S-Stop…I’m going to—"
As soon as he said it, Tsunade inserted another lubed finger and fisted her whole hand up his ass as far as she could at once intent on reaching and stimulating his prostate which she did.
This had the desired effect as Naruto screamed and a watery trail of discharge started leaking from his tap which quickly turned into ropes of pearly white cum gradually which amazed Tsunade. His whole body spasmed and jerked and his eyes rolled into the back of his head as he collapsed and fainted on top of his own cum with his ass still in the air.
Pulling out with quite a bit of force, his asshole left quite a big gape on his virgin ass which was struggling to close itself. It was so sexy to her that she had to take a photo of that. Which she did.
Tsunade took off the rubber gloves and looked at her handiwork and grinned. Phase one of her plan was complete.
She looked down and saw the blonde’s cock still leaking piss-like droplets of cum and decided to try a sample. She bent down and sucked on his foreskin covered head sucking out all the left-over cum making the blonde moan in his sleep and making herself moan with the musky and tangy flavor. “So delicious. It’s a shame so much is wasted…”
She decided on not pulling back the foreskin, saving that flavor for later but did scoop up a lot of the cum from the puddle underneath with her fingers licking it up wishing he could be awake right now to see.
When she was done sucking his tip, she let go of the head with a pop but not before giving it a lick and a small kiss leaving behind a red mark.