To make this an educational experience.

“May I watch?” Vina asked. Despite her upbeat demeanor, and the surprising confidence she had shown up to now, the beautiful girl from Jakarta looked uneasy with what she was asking. Her chipmunk cheeks were flushed with embarrassment and her eyes nervously darted between the two of them. But that was understandable.

Mason glanced at Yumi, but she was looking at him. The short girl clearly wasn’t sure what to say. It seemed his submissive girlfriend was hoping he would know what to do. Of course, he didn’t. But he would try.

“Are you sure?” Mason asked slowly.

“Well I would like to do these things eventually,” Vina said, looking like a child admitting she took a second bowl of ice cream when no one was looking. But then her visage changed to a small pout. “But I do not know much about this sort of thing. I sit behind Dani Bell and some of the other cheerleaders during fifth period. And I hear them talk about what they do with boys. They seem to do a lot, but it is pretty embarrassing so I try not to listen. And I do not want to talk about this with my mother. So-“

“I understand,” Mason cut her off as gently as possible. He didn’t want to be rude, but he had known Vina long enough to know when she was just going to keep going without any interruption. Once again he looked at Yumi. The Japanese teen didn’t offer him a yes or a no. Her wide hazel eyes just stared up at him, curious to see his answer.

Was there really that much of a downside here? Not really. The only real risk was that he might scare Vina off. The innocent girl might not really understand what she was getting herself into. He decided to check.

“You want to watch me have sex with Yumi?” Ha asked bluntly.

“I want to know what to do,” Vina said earnestly.

“Okay then,” He agreed. “Let’s go.”

Mason reached out and held each of the girls’ hands with one of his own. He led them into the hallway then down towards Yumi’s bedroom. Despite his growing excitement and simmering lust, the tall teen could only move so fast. Partly because of that lust actually, as had become predictable his distended, oversized tool hobbled his movements. But also because Daisy, the Kamiya’s dog, had apparently woken up from one of her frequent naps and was now excitedly weaving between the three. She alternated between sniffing their shoes to see where they had been and begging for someone to rub her belly. But the blond also felt they needed to get on the same page before things got too crazy.

He turned to look at Vina first. The Muslim girl was actually already looking at him. Or rather the outline of his dick in his jeans. But she looked at his face instead when he spoke.

“Vina,” He said calmly but made sure to sound serious. “My golden rule for stuff like this, in the bedroom and outside of it, is that no one has to be **** to do anything they don’t want. So if at any point you decide you’ve had enough, all you have to do is say so. No judgment. No repercussions. Understand?”

It seemed to take her a moment to realize what he was talking about. But when she did she smiled. Vina seemed happy, reassured, and even more infatuated with him after that. The Indonesian girl enthusiastically nodded in agreement.

Then Mason turned his attention to the girl he was actually going to have sex with. Yumi was staring straight ahead as she walked. Her face was already quite red, and her eyes stared forward through her glasses in whatever the highly aroused equivalent of a thousand-yard stare would be called.

“Yumi,” Mason said gently, trying to get the petite girl’s attention. When she looked up at him he continued. “Remember that goes for you too.”

The tall, young man wondered if his little lover had heard him. He suspected not. But maybe she did. Or maybe she didn’t but knew him well enough to guess what he had said. Either way the Asian girl had an answer ready.

“I… I g-genuinely want this,” She said in a low breathy voice. Her quivering, stuttering voice made Mason a little worried. But Yumi made sure to use the magic word to say she was fine.

Then it occurred to him. The insecure teen’s fetish was in watching him with other women. Not in being watched herself, and given how uncomfortable Yumi was in her own skin that was probably a lot to ask of her. But the Japanese girl had still said yes. Whether it was because she realized this would have to happen eventually, or because she wanted to do this for Vina, or she was just so horny she was willing to tiptoe out of her comfort zone a little Mason couldn’t say. Whatever the case he was impressed. He gave her hand an affectionate squeeze as they walked into her room.

Mason shut the door behind them, making sure Daisy ended up on the outside. When he turned around both girls were staring at him expectantly. Vina looked a little nervous, a little curious, and a little excited. Her graceful hands were clasped together, moving as though they were washing each other and unintentionally giving her large breasts some extra lift. She rocked slowly from side to side, shifting her weight from one leg to the other then back again. By contrast, Yumi was standing stone still with her skinny arms crossed. Her face was already ablaze, but her bespectacled eyes eagerly drank him in.

“What do we do first?” The Muslim girl asked, probably a little louder than she intended. But her face was resolute, even interested. So Mason gave her a kind smile.

“Why don’t you have a seat on the bed?” He said, waving his hand towards the king-sized mattress. The massive teen had always wondered why Mr. and Mrs. Kamiya had bought such a large bed for such a tiny girl. (And frankly, he was a little jealous.) But it was certainly working to his advantage now. Even Vina perched on the edge there was still plenty of room. Maybe he could talk his moms into getting him an upgrade.

But he could worry about that later. For now, there were more important things to worry about.

First things first he walked up to his petite lover. He cupped her adorable face in his large hands and kissed her. It wasn’t the same gentle treatment he had shown Vina. It was a fierce and passionate act that stole Yumi’s breath right out of her lungs. It was a reward for being so brave. And a promise that more was coming.

“Vina,” Mason said, pulling back from the kiss. When he looked at his second girlfriend, he found a pair of black eyes intensely studying them. “Have you heard the terms dominant and submissive before?”

“I know the words,” Vina said, a little unsure. That wasn’t really surprising. Mason gently stroked Yumi’s red cheek as he spoke.

“Well… During sex, some people like to be the boss. And others like it the other way around,” Mason said. That probably wasn't the best way to explain it, but it was about as good as he could come up with while every fiber of his being was screaming at him to just get started already. But this was important. “I need you to understand that because Yumi here is quite submissive. And so far I’ve liked being dominant.”

Vina’s brow crinkled in confusion. Clearly, the virginal girl didn’t quite follow him. But Mason could understand. This was probably a fairly foreign concept to her. It wasn’t hard to imagine the sweet lady had only ever imagined sex as a gentle, affectionate act of union between two lovers. All rose petals, silk sheets, and schmaltzy declarations of undying love. And he’d be happy to give her that when she was ready. (In fact that mental image it conjured got his heart beating that much faster.) But that’s not what Yumi would want. At least not in her current state.

“So we need to make sure we can be honest with each other. And for that, we need something called a safe word. Think of it like an escape pod,” Mason said. That seemed to work. Vina gave a small nod. “For her, it’s “genuine.” If she tells me something she genuinely doesn’t want to do something I’ll drop it. And it works the other way too.”

Yumi looked positively mortified. But the way she nibbled her lip and rubbed her slender thighs together let him know she wasn’t feeling all that bad about the situation. Vina though was digesting his little sex ed lesson. With one hand she lightly stroked her chin, while the other’s fingers lightly drummed on her leg. Mason could practically see the flashback behind her eyes. Then the realization hit her. She sat up a little straighter as a confident grin formed on her face.

“Oh! I think I understand,” Vina exclaimed. Then she grew a little more thoughtful, looking up to her boyfriend for guidance. “Should I do that too?”

“Well,” Mason stretched out the word, giving himself an extra second to think. “I guess it couldn’t hurt. That way I won’t have to juggle multiple systems.”

That would be useful. Especially given that the blond had no idea how many women he might have to keep track of in the future.

“In that case,” Vina said with an affectionate bounce to her voice. “Yumi I am genuinely thankful that you are doing this for me.”

Yumi could only barely mumble out a thank you. Mason could only chuckle. The bubbly Muslim might not have as firm a grasp on this as she thought. Still, she would probably get it after a practical demonstration.

The tall teenager looked down at his tiny, Asian lover. He swore he could hear her heart hammering as she looked at him expectantly. Mason gave her a wolfish grin. Then without a word, he grabbed her waist and scooped her into the air. Yumi’s surprised squeak sent a throb of pleasure straight to his cock. He deposited her, standing, on the bed and pulled her close. With their heights somewhat equalized, he plundered her mouth with reckless abandon.

Out of the corner of his eye, he spotted a blurry Vina turning to face them. Clearly, she hoped to get a better view of the action. But Mason kept his attention on Yumi. His tongue reacquainted itself with her mouth. The petite girl did what she could to kiss him back. But between his domineering hunger and her own all-consuming lust, she had instantly surrendered to him.

When he earned her first moan, Mason decided to push things further. His left hand bunched up a handful of her baggy hoodie, lifting its hem up. Out of the way his right hand, which glided down her back until it came to rest on her pert, little ass. After one quick squeeze, he pulled it away. And brought his palm down onto her left cheek. (Well given the size of his hand and her butt it was really the whole thing.) It wasn’t that hard of a spank, at least he didn’t think so, but it still **** a ragged, wanton gasp from his tiny lover.

“That feels good? Doesn’t it hurt?” Vina asked in shock. She was sitting cross-legged against the headboard. Her hands had been resting on her knees until she brought them up to lightly cover her mouth. Now they were just below her wide eyes.

“Well we’ve only tried that once before,” He said with exaggerated thoughtfulness. Then he looked down at the petite, Japanese teen in his arms with a cocky, toothy grin. “We’d have to ask Yumi here.”

The girl in question lowered her hazel gaze in embarrassment. But that wouldn’t do. Mason hooked a finger beneath her chin and lifted her round face up. He gave her a second to object, but all she did was swallow heavily. So he gave her one more grin and turned her to face her co-girlfriend.

Yumi didn’t answer immediately. But eventually, she got the words out. Even if she had some difficulty.

“I-I-I-It feels g-good,” She stuttered. Her old stutter was always at her worst when she was nervous. But there was no missing the aphrodisia in her tone. “It d-does h-hurt a lit-little. B-But I like how it feels. H-He could even b-be a little r-rougher.”

Mason smiled at that. Then he obliged his tiny girlfriend, smacking her ass a bit harder than before. The firm thwack that filled the air was accompanied by another libidinous groan. Vina’s eyes followed his hand this time, flicking up and down with perfect timing. It was like she was studying the spank trying to understand what was so appealing. The outsized, young man hoped she found that out. It would be such a waste for an ass like hers to go unspanked.

“We’ll have to test just how much rougher you like it,” Mason growled softly. “But that will have to wait for later. Right now you’re looking a little overheated.”

“Th-That’s hardly my fault!” Yumi protested, while her face grew several shades redder.

“Are you saying it’s mine?” Mason taunted.

“W-Well…” But he didn’t let her finish. One of his hands plucked the glasses from her face, while the other one pulled her gray hoodie up and over her head. Yumi wordlessly acquiesced. Lifting her slender arms and helping tug the garment free. Once it was Mason dropped it to the ground. Then he brushed her long hair from her face, taking in her flustered cuteness.

Beneath it, she was wearing a black t-shirt. Across the chest was a group of anime characters he didn’t recognize. One man flanked on either side by several beautiful women. Was that intentional? He might need to ask. Later.

Right now he gave her one more quick kiss. And started pulling that off as well. Once again Yumi once again proved to be wordlessly compliant. Though her instincts kicked in when her top came off. She tried to cover as much of her bare skin as possible. Even though her torso was small, and she still had a bra to help, there was no way to cover it all.

“Your bra is so cute!” Vina excitedly said from the sidelines. It certainly was. One other advantage of growing up with so many women in the house was that Mason knew a bit more about female underwear than most other eighteen-year-old boys. For instance, he could recognize Yumi’s bra was actually a training bra. It was a bit old, based on the slightly faded fabric and the fact that Sylveon was notably absent from the other Eeveelutions despite being her favorite. His best guess was that she had it gotten a few years ago, but failed to ever outgrow it.

“And you are so pretty,” Vina continued. Then she pouted looking down at her own body. And when she spoke again her voice was low and flat. “So thin.”

The Indonesian girl’s hands awkwardly rubbed over her stomach. Her shapely body was far from lacking curves. And one of them just so happened to be on her tummy. It really was just a bit of extra belly. Not exactly a six-pack, but definitely far, far from a keg. It was just a tallboy. One you couldn’t even see through her clothes half the time. Mason opened his mouth to try and comfort her, but his nearly topless girlfriend beat him to the punch.

“Y-You’re so beautiful,” Yumi insisted. “More than m-me.”

“That’s crazy!” Vina said loudly. “You are so cute! Adorable!”

The Japanese girl looked away in embarrassment. She looked ready to argue, but Mason interjected.

“You’re both beautiful. Just in different ways. I hope I’ve made it clear how attractive you are,” Mason said, once again pulling Yumi to meet his gaze. Then he looked over at Vina. “And when you’re ready I’m going to do the same for you.”

His Muslim girlfriend blushed at that and tried to hide her lovesick smile behind her hand. His Japanese girlfriend meanwhile tried desperately to cover the entirety of her burning face. Mason shifted his gaze from one to the other. He gave Yumi a kiss on the forehead. Then he crooked a finger at Vina. The curvaceous girl awkwardly crawled over to him, Mason taking the moment to admire the way her heavy breasts swayed beneath her. She pulled herself up onto her knees when she got next to Yumi. It was clear the Indonesian girl was going to ask a question, but he cut her off. He quickly leaned down and planted an affectionate kiss on her plump lips.

“Hope I made my point,” Mason said lightheartedly. “Now let’s get you out of this.”

He circled his hands around Yumi’s thin torso, dragging his palms over the sensitive skin covering her ribs. He followed the fabric of her bra ready for a potential challenge. It was a cliche, the man struggling to undo the hooks on a woman’s bra. One he suspected was often over-exaggerated. Still, he wasn’t relishing the idea of doing delicate work with his thick fingers. But much to his surprise, his fingers met without ever feeling a break in the cloth.

“It doesn’t have hooks,” The tiny girl mumbled into his chest.

That worked for him. For the third time in a row, Mason pulled a garment up and over, his petite girlfriend’s head. And as before Yumi’s hands quickly moved to cover the newly exposed flesh. But Mason was ready. He stopped her arms with one hand and fixed her with a stern look. She was quick on the uptake and dropped her arms to her sides. The blond dropped her bra into the same pile as the rest of her clothes. Then brought up his hands to fondle the small mounds. Once again they proved quite sensitive, as the tiny teens’ said breathing quickly grew ragged. She closed her eyes and allowed herself to simply enjoy the feeling of his hands on her.

“Do you like them small?” Vina asked. Her hands rested on top of her own much larger tits. She looked down at her chest unsurely. Had any girl ever worried if her boobs were too big to be attractive? Mason might have been witnessing a unique moment in history. But it was one he quickly squashed.

“I like all kinds,” He said, openly ogling Vina’s chest for the first time. Normally that probably would have made the Muslim girl uncomfortable. Maybe even a little angry, as odd as that sounded. But now it only garnered a bashful, though quite charmed, smile. She even went so far as to lower her hands to give her new boyfriend a better view of the puppies in her sweater.

A familiar yearning uncoiled within him. He couldn’t wait to get his hands, and maybe a few other body parts, on them. While staring at the Indonesian girl’s heavy bust (no doubt much to his other girlfriend’s pleasure) he circled fingers closer to the center of Yumi’s bee sting breasts. Until he found her small, light brown nipples. They were already hard as little pebbles. And when he gave them a small tweak the Japanese teen yelped in delight.

But there was more he wanted to do. Mason kept one hand on Yumi’s chest, drawing ever more delightful, erotic sounds from his original lover. The other slithered down and hooked her behind her knee. He lifted her leg, helping her maintain her balance on the squishy bed by supporting a good deal of her measly weight. To his surprise, she acted before he could speak. The waif quickly pulled off her sock. One repetition of the process later and she was left with bare feet and a light sheen of sweat glistening on her skin.

Before any other interruptions could crop up Mason took care of her pants. Despite his lack of dexterity, the giant teen made short work of the button and zipper. Without their help, the jeans instantly fell from her narrow hips. There were the panties he had glimpsed earlier. Beneath the pink waistband, they were actually striped. A series of thick white, pink, turquoise bars ran horizontally along the front and back. But that wasn’t what got his attention. That was the smell. Even still wearing her underwear, the faint perfume of feminine arousal was already wafting off of her. It was a delightful scent, one he might just end up addicted to.

Lowering himself to his knees Mason pulled her panties down as well. And for the first time, he got an in-person look at her clean-shaven pussy. He ran a thumb over her hairless mound making a shiver run up her spine. Yumi had done a wonderful job. The sensitive skin was smooth as silk without so much as a single black strand left behind. Now free from the wild thatch of pubes her little cunny was even cuter. Though any semblance of innocence was dispelled by the way she was practically drooling clear nectar.

“You don’t have hair?” Vina asked in confusion. “I thought all women had them down there?”

“I sh-shaved it,” Yumi moaned, as Mason’s breath tickled her bare lips.

“Why?” The Javanese girl asked.

“Because I told her too,” Their boyfriend explained. “And since she’s a good girl she obeyed.”

That sent a shiver up Yumi’s spine. If Mason didn’t know any better, he might suspect she had begun to enjoy that particular moniker. He’d have to remember that going forward.

“Should I do it too?” Vina asked. Her lips tightened and she uneasily eyed Yumi’s groin.

“If you want to. It’s not an order.” At least not for her. Not yet. “But since Yumi did as she was told, I think she’s earned a reward.”