Disclaimer: First Chapter
Happy Valentine's Day everyone.
Story Start!

The morning of the third day.

Early morning of the third day, and Naruto was awake while Koneko was still in the bed. On the ground, with both of his arms behind his back as he did push ups, silently muttering under his breath the numbers so that Koneko didn't wake up. This was odd on multiple accounts, for starters he was doing push ups without his arms, and he was doing it naked as the second odd thing. This was part of his secret morning training, something that nobody (not even Kuroka) knew that he had been doing since the day after he had sex with Shizuku. He acted like he was okay with the fact that he had lost to her, even if she didn't think of what they did as competition he knew he lost, but he wasn't. He didn't like to lose, and she knew he was striving to better himself sexually... but this was a secret training that he had decided was best left... unsaid, at least until it started to provide more results.

He was only 15 years old, and while he read that men didn't stop growing down there until full maturity (about 5 years or so away for him) he wanted to see if he could increase his size through sheer effort. So, before anyone else woke up in the mornings and saw what he was doing, Naruto made sure to do 100 push ups... using nothing but the strength of his penis. It hurt, it hurt a lot, and he had already had Asia heal him (while he wore boxers) without explaining to her the reason why he was doing it. It was said that when a muscle was torn, or a bone was broken, it repaired itself stronger than before. Asia healing him had increased the strength of his penis just enough that he was now able to do his work out, without totally destroying himself again.

Tissue fibers, when torn, repairs by fixing or replacing the damaged muscle fibers by using together and form new muscle protein strands, aka myofibrils. Once repaired, the myofibrils are thicker and in greater number than the original, resulting in an increase in size called muscle hypertrophy.

Naruto wanted it noted, that he asked Rias how muscle mass worked when he was coming up with this idea... without telling her why he needed it.

The end result?

Through sheer effort, blood, sweat, and utter agony he was going to increase the size of his penis without using those fake drugs that didn't really do anything. He would increase his size, he would increase the strength and hardness of his love muscle, and as he gained experience both his stamina and his recharge time would go up. This, while combined with the fact that he was a growing teenager, would mean that he would be able to actually put this unique training to it's ultimate potential.

"... done..." Naruto slipped his boxers back up, and wiped the sweat from his brow, looking at Koneko sleeping peacefully in bed.

Tonight was the night, the night that Koneko was truly initiated into a harem situation. To be honest, he was still a little nervous, this wasn't like with Shizuku. Right now, he had experience and she was the virgin. He had to show her the time of her life, he needed to make this special and satisfying for her, memorable even.

Not to mention, this was his chance to win.

His horrible lose against Shizuku had left a really bad taste in his mouth, but this was his chance. Koneko was his rival as well as his love interest, this was a chance for him to claim a sex victory, and just a victory over her in general. Love was a battlefield, and making love was one of the arts in the love war. He tasted a bitter-sweet defeat, it damaged his pride, and while he was now closer to Shizuku than he was before, he vowed that he was going to defeat her. She was his goal, sexually at least, that he had to surpass.

'... I guess I really am competitive... I can't even have sex without wanting to dominate the competition... hearing I wasn't the best partner she had... I won't take that without showing her just who I am.' Naruto gripped his fist, a challenging grin on his face.

He wanted Koneko's first time to be special, and he wanted to beat her, but this was also a chance for him to secretly find out how he compared to a virgin. He wanted to truly see where he stood out, with only a single other partner, how good was he really? He needed this second opinion, and Koneko was a person who was brutally honest, she would tell him the truth if he sucked or he was great.

His morning work out was done, so while he had a chance, he would shower and get a few more hours of napping in.

-Later that Morning-

'He's sleeping really soundly... and he smells good, he must have woken up early to shower... and work out maybe.' Koneko yawned as she snuggled up to Naruto from behind, before realizing what she was doing and letting go of him. She looked with another yawn, and saw the hotel room clock had the time as 7:15 in the morning, meaning that it was about time to have a good breakfast.

Tonight was the night.

Koneko's cheeks turned bright red when she realized what she and Naruto had promised to do, after their day at the anime convention, they would have a romantic dinner... and do the act. Nervously, Koneko shifted out of the bed with an uncomfortable look.

She heard the first time hurt.

No normal person enjoyed pain, and she was nervous, this wasn't something her Rook trait would protect her from. This wasn't her body being durable, the inside of her body wasn't much more durable than a normal human's was when it came to that area. Koneko didn't even know a ton about her species, she didn't know if she had a hymen or not like humans. She didn't know if it would hurt or not, but that alone was still enough to make her nervous.

'What if I'm not any good either... he's done it before... what if I don't compare against Shizuku... I'm sure she had a ton of experience and technique... what if after this, he decides against me?' Koneko knew she was being stupid, Naruto wasn't the type to base his opinion on people or change it because of sex.

Reaching into her bag on the ground, she got her costume for the day... the final costume was simple. It wasn't cosplay, it was a white bikini with some added features to increase it's fetish level. It was just a reference to RPGs and stuff where women's armor was revealing.

She didn't want tonight to hurt.

So... maybe before then... she could check herself, and break that herself just to make sure tonight would be nothing but pleasure. Her fingers alone wouldn't do it, they weren't really long enough to completely break it without causing herself a lot of unneeded pain... if she had one. So, she needed an object thick enough that it would break the entire thing in one go... that she could push into herself with relative ease.

...

-21 Minutes Later-

"... Na... Naruto... help me."

"... Uuuuh." Naruto groaned when he heard a soft voice coming from the bathroom. Blinking his eyes awake, he saw that it hadn't been that long since he laid back down to go to sleep. He looked around, before he got up and walked towards the bathroom, knocking on the door. "Aaaaaaaah... you need something?" Naruto asked her through the door.

There was a long pause.

"No... yes... maybe... I need your fingers."

"My fingers..." Naruto opened the door, and was greeted to an odd sight. Koneko was face down, ass up, in her costume for the day. Her face was burning red, and she was trying to keep it as neutral as she could. She had her costume slipping off her body, and both her hands were soaked in her own juices. "... What?" Naruto's face went blank.

She needed his help, right?

"... It's stuck... I pushed it in too far... and my fingers can't get it out." Koneko admitted with shame, not wanting to admit to the fact that she had done something really stupid. His hands were bigger than hers were, so he would be able to pull it out of her easier than she could. "... I don't want to call Rias to come help me... I tried to break my hymen... but I don't have one, so I pushed it in too far." Koneko explained when she saw him not moving to help her.

Naruto wanted to laugh, but he didn't as he bent down and saw her stretch herself open a little.

He saw orange and black, so getting inside of her, he was able to actually get his fingers on it, with Koneko moaning and shivering underneath him. Naruto quickly pulled out the object, the second he got a good grip. It landed on the floor, and Naruto got a good view of what she had stuck in herself.

His yo-yo.

She had attempted to break her hymen with his yo-yo.

...

That was a sentence that he was pretty sure he never expected to think in his entire life.

Chapter End!
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