Yui and Daiki [pt.I]

The next day found Tanaka administering his first official sex training session. He fiddled with the camera on its tripod, excitement and barely contained glee making him fumble a bit. Not that it mattered, the ones who were really nervous were the two students sitting perched on the side of the bed before him, Daiki Tachibana and Yui Obata.

They were in Yui's bedroom. Yui's youthful beautiful almost look-alike mother perfectly happy to leave all three eighteen year olds alone for an oh so official fuck session. She hadn't even minded being a bit friendly with Tanaka and engaging in a little kissing and groping as the two other teens patiently watched.

He turned his attention to the pair of them. They made a cute couple. She was a shortish girl with bright red hair cut in a bob with a pretty face and sparkling light blue eyes. Her tits were small but her ass was a bit big for her slim frame, always looking delicious swishing around under her uniform skirt. Daiki was only a bit taller than her, slender with short brown hair and friendly eyes. While Tanaka hadn't seen him perform, he'd heard good things about his abilities on the track team.

"Ahaha, I'm so nervous for some reason..." said Yui, "I didn't realize this would be filmed...''

"Relax. Just standard procedure. Videos like these will be used in all sorts of ways to enhance the school's sexual training program. You'll be happy to have it to see how far you've come once you've gotten your sex license, plus Daiki here is going to make use of it for his solo practice." Tanaka told them as he finally finished the set up and hit record.

"Oh. Okay!" chirped Yui, as Tanaka stood tall next to the tripod, surveying the duo with his hands on his hips, "Please take care of us, Tanaka!"

Daiki was looking off to the side, clearly embarrassed.

Tanaka struggled to hold back laughter, "Alright, alright, I know you're both looking forward to the fun stuff. But first we've got to get through some standard questions I'll be asking every student doing my training."

They nodded back at him, clearly still nervous and a bit confused.

"Why did you want to take this training?"

Yui spoke up first, cheeks rosy, "Umm...well, I think it's alright if we take things slowly, but Daiki says he wants to do it so..." she trailed off.

Tanaka snorted. Of course, he wanted to stick his dick in this cutie! Tanaka had no doubt if Daiki had been the one to find the earrings, he'd have been humping away on top of Yui in a nano-second. Wouldn't have come up with a fun scheme like this one though!

Daiki answered when Tanaka looked his way, speaking a bit glumly for some reason, "The girl that I love is now my girlfriend. Of course, I want to hurry and kiss and have sex with her." Yui had let out a surprised little squeak when he'd said he loved her, though it was quickly overtaken with a rueful expression during the second part.

"My, my! That was quite forward!" said Tanaka. "I hope you weren't trying to pressure this kind girl into having illegal sex with you!"

"I...No! I just..." Daiki started to look worried as he stuttered his way into a response.

Yui looked quite alarmed, "Oh no! Nothing like that. Daiki was only teasing! Besides I would never have sex with a boy before I was trained!"

Tanaka chortled inside, "Relax, relax. I was only joking. Now... Yui, do you know your three sizes?"

Her eyes widened in surprise as she looked down, then gave a big nod. "Yes, I know them! 83 57 84."

"Bra-cup?"

She blushed as Daiki watched her with an intent expression, "Oh I just started wearing a C-cup. Ohmygosh this is so embarrassing..."

"It's okay." he smiled warmly at her, "I'll embarrass Daiki next. Do you know your penis size?"

His eyes widened as Yui's hands flew to her mouth.

He turned really red as he stuttered out, "I... I don't..."

"You haven't measured it? Odd. Normally a young man's mother will measure her son's erection regularly, letting him know if he's achieved his father's size or surpassed it, a regular right of passage." Mom had started confirming Tanaka's own superiority over his father loudly and often within days of getting the earrings. " Huh. That's fine. We'll get that taken care of eventually. For now, just tell us if you qualify as small, average, or large."

"It's average." he admitted after an agonizing moment that Tanaka enjoyed. Looks like Daiki was a bit self-conscious. Tanaka adjusted his bulge casually. A lot of the male students were going to be self-conscious about such things soon enough.

Turning back to Yui, Tanaka asked, "Are you ovulating?"

She squirmed in place on the bed, drawing attention to her thick creamy thighs peeking out from the way her skirt splayed out around her hips, "Ah ha... am I ovulating? Why are you asking me stuff like this? Um... If I think back to health class.... I think I am now... yea..."

That made Tanaka's lust boil and he had to stop himself from just throwing her down on the bed and fucking his babies into her as Daiki looked on. But he didn't. He'd gotten over the fuck everything that moves phase in the first few weeks after he'd gotten the earrings back before school started back up.

"Okay. Thank you. Now tell me this, Yui. Do you masturbate?"

"Eh? Mastur-" she started slowly before suddenly reallizing what he'd asked and freaking out, shaking her head and waving her hands out in front of her, "No way! No way! I've never done lewd stuff like that..."

"Really? That's rare for a girl your age," he noted, enjoying those nervous movements of that cute high-sex appeal body of hers.

Tanaka turned to Daiki who was staring at his girlfriend and clearly enjoying the same thing Tanaka was. He snorted, "I don't even have to ask this. Do you jerk off, Daiki?"

"Yea." he admitted, apparently growing used to the situation. He smiled slightly when Yui looked at him.

"How often?" prodded Tanaka, enjoying the power he had over them as well as the anticipation. This was essentially just fore-play for him.

"Every day," he said matter-of-factly, "Twice a day even."

The beautiful little schoolgirl blushed and stammered out, "I don't wanna know that!" while she buried her adorable face in her hands.

Watching them, he thought to himself that they looked like a boyfriend and girlfriend who were having an innocent conversation about sex...

"What do you think about when you masturbate?"

Daiki answered quickly, "Yui!" Way too quickly for obvious reasons. Yui looked like she didn't know if she should be charmed or outraged.

Tanaka smirked, "Is that all? And make sure you're being honest, Daiki. This is an official interview."

"Um...well other girls at school like Reina Kurashika-", that fat-titted gyaru slut? Nice taste. Have to try that one soon, "-teachers at school, anime girls, hentai girls, JV actresses... I mean... I'm a guy, you know?"

"Yea yea." he chuckled, "Betcha didn't know Daiki was a perverted little monkey, huh Yui? Nah. I kid. That's normal for virgin guys who don't have their sex licenses yet."

Yui seemed relieved that her boyfriend's interests weren't strange while Daiki added, "Yea, we're so lucky we're first in the program. I'm gonna be the first guy in class to get his license and graduate from monkey to man!"

Grinning at Daiki's enthusiasm, Tanaka cocked his head at his repeating the word monkey. Given its fairly derogatory nature, he didn't think the guy would use it even to make a joke. He snorted with amusement. He'd learned that using the word normal was finicky. The earrings' power to adjust the entire worlds norms was activated upon his use of the word normal but it didn't always stay confined to that same sentence it was used in. Related statements said at the same time could be drawn in and he had to consciously stop and let a few moments pass if he wanted the normality to hit exactly as he wanted it to. Not that he minded this one too much. It was pretty funny and he was looking forward to seeing all sorts of people casually referring to virgin males as monkeys.

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Yui fidgeted, her whole body feeling tingly and a whole host of butterflies in her tummy, as she sat on her bed. Her eyes flitted from the groins of either boy standing right in front of her as well as the floor. She couldn't believe she was about to see her first penis in person. Two at once!

Tanaka was not a very cute guy, not like Daiki. He had a large protruding stomach and a soft doughy sort of face, that seemed to have a creepy look behind those glasses sometimes. She felt bad that she was so focused on appearance, but it was just true. So naturally, she was more interested in seeing Daiki's penis. Both boys dropped their underwear at the same time and she saw her boyfriend's dick fly up, half pointing at the ceiling.

It was a bit smaller than she'd expected, but it wasn't like she had a frame of reference for such things. It was pale white and smooth with a pink vein winding along one side. His testicles were like a pair of eggs nestled up against the base of his shaft. The tip was pink and shaped like a funny little helmet.

Then she turned her blushing attention to Tanaka's...

Where Daiki's was a stiff shaft quivering slightly as it stuck out from his curly brown pubic hair, Tanaka's hung down like a third leg, curved and coiling at it seemed to swell and grow before her eyes. Tanaka's cock was darker than the rest of his skin and it had a lot of bulging veins wandering around the shaft. The end of it was also big, a dark purplish color and giving off the somewhat amusing impression of a fat apple stuck to a pipe.

Tanaka grabbed his thick cock in his hand and gave it a few pumps, causing it to grow harder, the big head bulging and the hole at the end to spread every time his fist met it. "Now you'll have to forgive me if my lecture is obvious information but we need to make sure everyone has the same base of knowledge, you know."

"Oh! Of course!" assured Yui, nodding.

He cleared his throat and started speaking, "Now as you all know the male sexual organ is called a cock or a dick. There are other names for them as well but those are the most common. You definitely don't call it a penis. Saying that would just tell everyone you definitely don't have a license and for those in my training class it would embarrass me as your instructor using such a juvenile term. Now on to the cock! Daiki, do what I do to show Yui the different parts."

A hard breathing Daiki quickly mimicked Tanaka, taking his dick into his hand. Yui couldn't help but notice the way her boyfriend's hand seemed to encompass his entire length while the lower half of Tanaka's thrust out into the air past his.

"This is the shaft," he said as he added his other hand to his length and stroked up, pushing the skin forward so it almost covered the head before sliding back down. "The head is called the glans and this is the most sensitive part."

He ran his hand along the underside to the tip where a clear sticky liquid started to form at the hole, his fingers squeezing the glans and causing the hole to gape larger, a thick string of the oozy stuff.

"This is pre-cum, it's normal and happens when a guy is really aroused. Now I'll show you the balls."

He raised his cock so that it pressed up against his stomach and Daiki followed suit though his only went up to his navel. Tanaka's ball sac hung down, dangling between his thighs far larger than Daiki's. Yui had been vaguely aware that peni-cocks came in different sizes but she hadn't known that extended to their balls too. Tanaka's scrotum looked very full and heavy.

She wondered if they were full of sperm. If so, it occurred to her that Tanaka had a lot more sperm that Daiki. Maybe that made sense since he was a pro sex trainer. It made her feel... a familiar flutter in her loins and she squirmed in her seat.

"This is the scrotum, it holds the testicles," he said as he patted his balls. "The testicles produce sperm and the hormone testosterone which causes a guy to have erections and sexual desire. As you can see, Yui, your sexy body has us both excited and itching for sex!"

Daiki and Tanaka are all hard because of me? She blushed furiously, eyes moving from her boyfriend's exuberant erection and her teacher's much larger one.

"You can touch them if you like." Yui looked up and met Tanaka's eyes, frowning in confusion and he continued, "Your boyfriend's and mine. You need to get used to handling dicks."

"Um...o-okay, I guess."

She looked from one to the other, so very different and yet both male organs. She reached out with a tentative hand, fingers brushing against the hot flesh. Daiki's bounced easily in the palm of her hand, almost floating he was so hard. Tanaka's was heavy and fat, seeming to appreciate her hand's support as she wrapped her fingers around it. She could feel them both throb as blood moved through the engorged veins and she marveled at how different the experience was. Tanaka was a long squeezing stroke upon a big slightly gushy bat while Daiki's was a quick short pump on a rock-hard hot dog.

Her boyfriend had his head thrown back as he groaned, his face a bright red, his hips seeming to jerk a bit in response to her touch. He looked so cute! She turned her attention to Tanaka hesitantly and found him simply looking down his big belly at her with a smile, "You're doing fine. Here."

His hands rose to cover her own where she gripped his member, the tips of his fingers brushing against the inside of her wrist as he began to move her hand over his dick in a slow and steady up and down motion.

She turned from one to the other watching intently as she pumped their cocks, listening to their groans and grunts. The whole experience was overwhelming but at the same time, simple and natural. It was amusingly a bit like milking a cow and she felt a little smile form on her lips as she realized how easy it was to make them feel good. She'd been worried..

"They feel so different..."

"That's because they are," he explained. "Everyone is built differently and unique, just like faces and finger-prints. This isn't a science, it's an art. The best sex comes from learning the body, not the diagrams. Daiki's testicles are small, so he probably shoots quickly. My testicles are large and heavy so I can hold my sperm for days before ejaculating."

That made sense to Yui and she glanced between Daiki's and Tanaka's dicks, feeling the urge to ask about the difference in size she didn't want to embarrass Daiki.

"Your wondering about the size difference in our cocks and if it's true what they say about bigger ones?" Tanaka said knowingly.

Yui's eyes widened, her stomach dropping as she felt her face burning in embarrassment, he had read her mind!

"Well, that's a lesson you can answer yourself." he said with a chuckle, "I bet you found me to be a pretty unattractive man before this, right?"

"W- well..." Yui stuttered, trying to find an answer that wouldn't hurt his feelings.

"It's alright. That changed as soon as you saw my big dick, right?"

"Uh..." she was at a loss. She did sort of find his very big penis to be fascinating but it was also kind of gross... But she couldn't tell Tanaka that!

Tanaka's grin only grew as he stared at her from behind his glasses perched low on his nose, "That's alright. Here's something you probably didn't realize. When women look at a guy and judge his physical appearance they base it on his face and his body. What they can see. Good looks, broad shoulders, narrow hips... that sort of thing. But normally they always leave a bit of room for one last factor which is dick size. If a guy has a really big cock, once a girl sees that, it hits them right in the ovaries! More than makes up for him being fat or ugly or maybe even a bit of body odor."

"Oh..." Yui said, feeling her cheeks burn. The truth was ever since she'd seen Tanaka's big one, she'd seen him in a new light. His big belly and bulky overall form just kind of healthy and even powerful looking now.

Not ugly as she'd previously thought.

"So when most women see my dick they normally immediately lose any prejudice against me due to body type and are very willing to be with me in a sexual manner."

"The reason you feel that way is that you're body recognizes both the greater pleasure my large cock can provide and my fitness for knocking you up. Now that isn't to say a smaller dick like Daiki's can't make you feel good, but normally there is just a ceiling to the pleasure it can give you."

That made a lot of sense to Yui. She had a basic idea about the mechanics of sex and if the rubbing of the boy's dick inside of her provided the good feelings then naturally a bigger one would be better. Since she was still a virgin, she couldn't really comment on the matter but it all seemed to make sense. Looking to Daiki, he didn't seem to bothered by their discussion but then again he seemed to be off in his own world, just staring at her hand on his dick with a goofy grin on his handsome face.

"Ah! Thank you for telling me that, Tanaka!" she said blushing under his intense gaze as she continued to slowly stroke his huge cock, "I had no idea about any of that."

He grinned at her, "Not at all, Yui. Oooh!" He suddenly reached out and pulled her hand off Daiki's dick. "Ha! I think Daiki was about to ejaculate! What did I say about him?"

Daiki was gasping his hands on his knees as his dick seemed to pulse angrily. Yui tried to think about it even as she appreciated the amazing condition she'd put her boyfriend into with just a bit of shaking her hand upon his pe- dick. "Um...that since he's a monkey with small balls he ejaculates quickly?" she tried.

Tanaka's eyes went wide and he threw back his head, laughing uproariously sending both his big belly and cock jiggling wildly.

Yui giggle nervously, not sure what Tanaka was finding so funny about what she said.