This was it.
This was the pleasure that she had wanted to feel, wanted to know of with her own body.
It was nice being fucked, very nice actually. She didn't hate it when her harem had fucked her in different ways and different positions. During those 7 days where her body had been craving this, she kept trying to prove Naruto wrong about her own perverted nature. She learned so much about herself, and she had been surprised by the fact she loved being fucked from behind doggy style, and nearly as much as that she loved being on top of a guy and looking down at him as she squeezed a load out of him.
She had thought Naruto was all talk, actually she had kind of hoped he was all talk.
She had, deep down, hoped that he wouldn't be able to live up to her expectations and she could mock him.
His fingers.
"How... how?" Koneko asked when she sat in Naruto's lap and panted. The first experiment that she was having done to her as his official helper. She was butt naked, and Naruto's hands were wet with potion that he was rubbing into the sensitive spots of her body.
He knew her body.
His fingers skillfully found and targeted every single sensitive spot of her body. His right hand rubbed the top half of her right breast, and every so lightly rubbed her njpple, before he pinched her nipple. Both of her nipples had been standing at complete attention, their light pink standing out against her blushing red skin.
"How what?" Naruto asked her as he put some more of the potion in his hand.
"How... NNNNG!" Koneko came hard into Naruto's hand. He didn't even have a finger inside of her. She came harder than she did when she took the largest dick of her harem inside of her, pounding her. Using just her nipples and cupping her vagina, his palm just barely brushing up against her lower lips. "NN!?" Koneko came instantly a second time.
She had a shotgun orgasm, cumming twice at nearly the same time when Naruto pulled on her nipple and on her clit. She didn't even get to finish her first orgasm before he forced her to cum again.
"What... does this potion do?" Koneko changed her question.
"It makes the body warmer, and I want to see the effects it has on the sensitive spots of the body... what was that, your 7th orgasm?" Naruto asked Koneko as he lifted his hand up, which was soaked in her juices. Her face was burning red from the intensity of her constant orgasms. Naruto leaned forward and forced Koneko to lean against his body.
Koneko leaned back against Naruto even more, and she moaned when his finger finally penetrated her.
He didn't even hesitate, he found her G-spot and he started to rub it with his middle finger. Her hips bucked against him. She had her G-spot touched by a dick before, but her lovers had always tried to go as deep as possible inside of her. Usually when she got dick, it only pressed against her g-spot with the side of the shaft, but Naruto's finger purposely targeted her G-spot and pressed against it. He poked it and prodded it, his finger rubbing the potion deep into her G-spot with more skill that she had even fingered herself.
Her was better at fingering her than she was.
He was too skillful in going after her weak points, it was like he had experience finding her pleasurable spots.
"Ah!"
She came.
"Ah!"
She came HARDER 2 minutes later.
"Bend over and show me your ass." Naruto whispered into her ear as he placed his hand up against the coffee table. Koneko didn't react to his words right away, her mind had gone blank from her orgasm. "Okay, good angle." Naruto complimented Koneko when she leaned against the coffee table and showed him her ass.
Her inner thighs were soaked.
Naruto took out his notebook and he started to write down Koneko's reactions to the potion, noticing that her body was heating up. He could see her body starting to sweat even more, and Koneko looked back at him.
"Aren't... aren't you going to fuck me."
"Nope, you can have this while I record everything though." Naruto stated as he put a drop of potion on one of the hairs that he pulled from her. Koneko watched as a clone of herself appeared standing in the room with her. "I've got time to kill until Rias gets me that ingredient I need, but I need to do some prep work." Naruto stated.
Cloneko appeared.
"Thats... me again?" Koneko whispered when she saw herself.
"Yeah, did you forget that I can clone you practically whenever I want? Anyway, she will be your partner... and look at this here." Naruto stated as he gave Cloneko a slap on the hip, and Koneko looked down. Her eyes widened when she saw that her clone had grown a well sized dick, not the biggest that Koneko had ever had, but not the smallest either. "Futa Cloneko here will be your partner. I need to test out the limits of a dick produced by the Futa potion anyway." Naruto stated as he looked at hardened dick.
Well that was slightly surprising.
"... I'm that big downstairs?" Koneko looked at herself.
Her dick.
"Apparently, if you were a guy, you would be pretty well endowed. I guess your dick should be nicknamed Daineko then. Well then, Cloneko, get to it and fuck the original." Naruto stated to the clone. Naruto sat back down at the table and he started to write down his observations so far, and he grinned.
"... Are you sure that she is going to be able to..."
"I made you cum using nothing but my fingers, I think that your clone will do just fine." Naruto stated as the clone approached Koneko from behind.
Cloneko grabbed Koneko's hips and started to line herself up.
'I've had bigger... sure, Naruto was able to make me cum using nothing but his fingers... and those were awesome... but there is no way that this clone will be...' Koneko's eyes widened when she felt the head of her clone's dick start to split her swollen and ready lips apart. Her clone pushed the head of the penis into her only, before slowly moving out and grinding the head along her lips. "... I thought this clone was going to fu-NNNNGYA!?" Koneko screamed out.
Cloneko pushed 2 inches of dick inside of her and angled it perfectly to slam it into her G-spot, before she started to grind against it as she pushed even further passed it. Koneko's mouth opened and she gripped the table in a wordless moan, her saliva dripping down onto the table.
"You're taking that dick like a champ... tell me, does it feel weird after that potion? Does it feel hotter, warmer?" Naruto asked her as he watched more go inside of her.
5 inches in.
"It's... going in deep... and it's hot..." Koneko stated as she took more and more. Her clone wasn't stopping until she was all the way in.
Naruto looked at her reactions though.
"Hot... the deep part isn't really needed. You sound like a bad hentai there. Now tell me this, can you feel your entire body heating up?" Naruto asked, since physical contact was suppose to make the body heat up after the potion is applied. Koneko was starting to get lost in pleasure though when Cloneko stopped going easy.
Cloneko had the programming to fuck, and that was what she was going to do. Instead of simply pumping though, Cloneko curved her hips with each thrust. She heavily pressed into Koneko's G-spot with each thrust.
Koneko came.
"Ye... yeaaaaah... I'm... so hot."
Koneko was starting to sweat heavily now, her hair getting stuck to her forehead thanks to her sweat. Naruto waved his hand and Cloneko stopped moving long enough to give Koneko time to clear her head a little.
"I need you to tell me how the potion is having an effect on you. Is your entire body heating up because of the potion, or is... you know what, this potion is a failure. I need to rework it... you can keep going until you vanish Cloneko." Naruto stated to the clone. He would be happy to let the clone have her fun for the remaining time she had.
"You afraid to fuck me your-"
-45 Minutes Later-
Koneko was satisfied.
She was on her back, happy that she had taunted Naruto and gotten a rise out of him. She would have thought with the way that prefered to watch that he wasn't going to be good in bed. He was quite good though, and though when it came to bringing pleasure using nothing but his penis he wasn't quite up there with his creations, Naruto had something none of his creations had.
Intimate knowledge of her body AND access to whatever potion he wanted to enhance the sex.
His skilled fingers only ever went after the spots of her body that would bring her the most pleasure. He never once touched the wrong spot, and he always put the perfect amount of pressure.
Naruto had another advantage.
He had access to magic, and he carved magical symbols into her body using his magic. He would make literal electricity run through her body, or make her body cool down to the point that she started to shake uncontrollably. Her pussy would get even tighter when her body started to freeze, and her shaking would turn her body into a living vibrator which made only brought her more pleasure. Her constant shaking turned mere thrusting... not mere thrusting actually. Naruto had such intimate knowledge of her pussy, that he never even stuck his penis all the way inside of her. Instead of going all the way inside, he only went inside enough to hit the right spot, before he grinded he way out of her.
"Why... don't you... do that... more?"
"I like watching, but if you're going to work with my experiments, it doesn't hurt for me to at least prove that I can back up my claims of being able to bring you pleasure." Naruto stated to her.
Koneko couldn't stand up without grabbing the couch for support.
"You... didn't cum..."
"Of course not, I'm not going to cum inside of you when I can risk you getting pregnant. I need your womb to be vacant for some of my experiments. I'll finish myself off later." Naruto stated with a scoff, annoyed that she was concerned about that. He shaking legs stopped working and she collapsed to the ground.
"How... was I loose... was my pussy not good enough to make you cum?"
"Don't be stupid, your pussy was awesome, the best I've ever had... well, the fact is that you're not using your body properly. Thanks to my experiments, I made sure to master Tantric Ejaculation Control... it takes more than just a nice pussy to force me to cum when I don't want to." Naruto buttoned his shirt back up.
After his first... unfortunate female monster that he had to destroy, he made sure to learn how to never cum unless he wanted to cum. He could last anywhere between 5 minutes and 50 minutes if he wanted to without cumming. The lifespan of some of those monsters he had made when he first made female monsters usually lasted a short amount of time if they couldn't get their hands on semen, so he had a crash course in mastering the art of not cumming.
"What?"
"Your vagina is awesome, but right now you're not using your body to it's full sexual potential. You're good, but you've got to be a lot better than that if you want to forcean orgasm out of me. Don't worry though, if you want cum... come on Sly, you can finish her off. I'm going to start reworking that potion." Naruto stated as he gestured for his loyal doggo to take over for him. He had proven his point to Koneko, and made her cum a lot during the 45 minutes that he was doing her.
"Wa-wait... my body is still super-"
"Should have thought about that before you decided to taunt me, don't worry though, maybe one day you can challenge me again." Naruto offered her a prankster's grin as he offered his own taunt towards Koneko.
Sly jumped her.
'He... did he just say that I'm not using... how am I not using my body to it's full sexual potential... I've had sex with multiple men, and even a clone of myself, and NOW a Monster Dog-' Koneko's mind was wiped clean for a moment.
She felt a burning annoyance filling her gut at Naruto's words.
He ignored her as she came again, and Sly started to fuck her like an animal possessed. He didn't even glance over in her direction as he started to work on his next potion.
"Sly, don't hurt her."
'... Sly is thicker, longer, and just altogether bigger... but somehow... his penis is better in almost every way... but why was Naruto still better?' Koneko started to have her mind clear. Sly just rutted her mindlessly, not caring to try and bring her any real pleasure. He just went as deep as he could fit inside of her, but he moved his hips as fast as he could. Sly was FAR better than any of the guys that she had sex with before today, even if she hated to admit that being fucked by an animal was a great experience for her.
It didn't make sense.
Was it the way that Naruto used his hands, or his abs, or his entire body during sex. Was it the fact that he knew every secret of her body somehow, and he made use of all of those secrets? Was it that somehow, instead of just going as deep as he could go, he skillfully targetted each of the best spots inside of her vagina? Was it the fact that Naruto used magical circles to apply effects to her body as well, no that wasn't it either because he only did that near the end to prove to her that he could go further.
"How... how are you better... how?" Koneko whispered as she looked towards Naruto.
She was not inexperienced, she had sex with 6 other men before Naruto, and 2 of those guys were bigger than Naruto was. Heck, even the 4 smaller than him had been really good lovers, but ALL of those lovers had been human like Naruto. Yet none of them even came close to Naruto's skillful loving, and she could force them all to cum whenever she felt like it. Yet even after 45 minutes of sex with Naruto, she couldn't force a single orgasm out of him, no matter how much she clenched her pussy to tighten it.
"It is simple, I've used a potion to transform into you and played with your body. I spent hours figuring our each and every secret your body had. I'm well endowed, sure, bigger than your average guy. The secret of my technic isn't that I'm good with my penis, though I am..." Naruto glanced towards Koneko as her body started to tense up as she got fucked doggy style. Naruto's eyes had a playful light to them. "... but part of my skill simply comes from the fact that I know exactly what feels great in your body. Your pussy can fit about 9 inches inside of it at it's limit, but the three best spots in your vagina are at 2, 3, and 5.5 inches inside of you. The other 3.5 inches are just for the good feeling of getting stretched... the top of your breasts are more sensitive than the bottom, and your right nipple is more sensitive to the cold. You have a preference for doggy style and being on top, but what feels best for your body is being on your back with your hips raised up." Naruto started to list off the secrets of her body.
"NNNNGH!"
"You can cum whenever you want Sly, I need Koneko to recover so she can help me with my next experiment." Naruto informed his good doggo. "Oh, and Koneko... a man's body is more than just a penis as well. During our entire sexual experience, you never once tried to tease any part of my body besides my penis. You're focusing completely on the penis, which makes you a good lover... well I'll let you figure out why you're only a good lover... when you figure it out, I'll give you another chance with me." Naruto stated to her with a smug grin.
Koneko came, but even as she was cumming, she gave Naruto a small glare for the way he taunted her skills as a lover.
"Tell me."
"Figure it out yourself, don't worry, with my experiments you will have a TON of chances to figure out the secrets of your body." Naruto explained to her. He wasn't going to tell her anything else on the matter until she figured it out on her own.
By the way, he could go up to 50 minutes straight without cumming, but that was only when he made an effort to control himself. If Koneko had lasted another 5 minutes without passing out and waking up, then she might have actually been able to get him to cum.
Thankfully, he made her cum more than once every 2 or 3 minutes, and 3 times he made her cum twice in a row instantly.
"Um... is it safe to leave our room?"
"Not yet, I'm still doing experiments!" Naruto called out to Asia, who was hiding in the bedroom while the experiments were going on.
"When Sly is done... I want..."
"I told you, I'm not going to have sex with you again until you learn where you need to improve. Anyway, I like you Koneko, but you're not my girlfriend. I'm not just some hot piece of ass you can get whenever you want just because you want some dick. Though, that doesn't mean I won't masturbate to you." Naruto teased her, before he went back to his experiments.
He needed that Phoenix Feather soaked in Virgin/Slut blood, but other than that one ingredient, he could finish 99% of the potion.
He also needed to make some combat tentacles to help Rias train her peerage.
He also needed to meet up with Gasper in order to start his Trap Research.
"Yeah... I am never making another contract with Rias again, she is WAY too much work. This is going to cut into my experiment time until I finish this contract with her. Next time I make a contract, it needs to be with somebody who understands my desires and lets me work on stuff I want." Naruto was not going to make this mistake again.
In the future, he was only going to make contracts with devils who let him work on his monsters and potions in peace.