Biology with Yumi.

The ride to school ended up being a lot like the day before. Yumi was quiet and nervous. Which Mason found too cute to resist. So they ended up sneaking kisses at red lights. (Earning another 10 silver in the process.) But all too soon, they reached the school and would have to stop their PDA.

But there was at least one upside. Today they actually had their first class together. And to make things even better, it was biology with Mr. Garvey.

The science classrooms at William Tweed High were different from others. Instead of desks, there was a series of black countertops. Each with a sink, some cabinet space, a power outlet, and a fire retardant finish leaving them ready for lab work and the inevitable lab fuck ups. Two students sat at each one. And given that Mr. Garvey subscribed to the philosophy of assigned seats that could easily spell disaster. But he was smart and let his students pick who they wanted to sit with first, then decide which pair had to sit at each station. That, combined with the fact their teachers could trust the two nerds to not cause trouble, was how Mason and Yumi ended up sitting together in the back of the class.

Of course, not everything was all sunshine and rainbows. The height of the counters meant they had to sit on stools instead of chairs. And while they were admittedly better than normal school desks, the giant blond still would be lying if he said he found them comfortable. But at least Yumi actually sort of liked them. Then again the pint-sized girl tended to enjoy anything that helped her feel taller.

When the first bell rang, the two already had their notebooks out and were ready for the first half of the class, the lecture. But Mr. Garvey was the type of guy to at least say good morning and give his students a chance to ask questions before he got going. So Yumi and Mason were actually ready before him.

But eventually, he got going and the two began taking notes. But despite his best efforts Mason just couldn’t concentrate on what his teacher was saying. Instead, he just kept glancing over at his girlfriend.

Yumi was hunched over her notebook scribbling furiously, the rapid swishing of pen on paper occasionally punctuated by the clicking of her changing colors on her shuttle pen. Her round face was scrunched up in concentration, brows knit and lips tight. Every so often her free hand would come up to turn a page and push her circular glasses back up her button nose. All the while her hazel eyes flickered between the paper in front of her and the whiteboard.

All together it made for a picture that Mason found too cute to look away from. And best of all, this industrious, brilliant girl had agreed to date him. He had never felt so tempted in his life. It took all his willpower to not reach out and touch her. To put an arm around her narrow shoulders and pull her against him. To tuck a strand of silky, black behind her ear. To take one of her hands in his own. The lovesick dork had no idea how he would resist for an entire class.

And as he took her in his mind also helpfully reminded him that they had done a lot more than just date. And his temptations weren’t all so innocent. Given the size difference, neither of them could easily reach the other's neck. But now, as Mason’s eyes traced her throat, he found himself wanting to kiss and nip at the sensitive flesh. And as his eyes moved lower, a now-familiar hunger swelled within him. The insecure teen’s taste in clothing tended towards loose and comfortable. And today’s outfit, an oversized, sky-blue hoodie and a pair of baggy jeans was no exception. But as she perched, leaning forward, on the stool, her pants were **** to conform to her tight, little ass. And even though it had only been a day, it already felt too long since he had felt it in his hand. Mason also couldn’t help but notice a tiny glimpse of a pink waistband poking out from beneath the denim. Which made him wonder exactly how loose her pants were. Could he fit a hand down the back? Or the front?

Eventually, Yumi glanced at him. Whether she spotted him out of the corner or just felt his eyes on her, Mason wasn’t sure. But the Japanese girl gave him a worried look. Then she angled her notebook towards him and wrote a question.

Are you alright?

It was hardly the first time they had done this. But usually, they were asking about something academic. Still, Mason knew to turn to a clean sheet and respond.

Yeah. Just a little distracted.

The petite girl took a second to realize exactly what he meant. But when she realized that she was what he found so distracting, her pale face grew progressively redder. And despite clearly fighting it, a small smile formed on her face. A small buzz of energy ran up her spine and she quickly wrote a response.

Me too.

For some reason, Mason found that hard to believe. Maybe it was the fact that his girlfriend’s usual hyper-focus seemed no different than any other day. But when he raised a questioning eyebrow at her, Yumi bashfully looked away from him. But eventually, she glanced back at him, and for just the briefest moment her almond-shaped eyes flicked down to his lap.

Yumi’s cheeks went from a little red to vibrant crimson as she stared down at her notes. Her slim thighs squeezed together and her left hand anxiously picked at the cuff of her hoodie’s sleeve. And Mason realized what had happened. His thoughts, tame as they were, had been enough to give him a semi. With its added size, combined with the relative tightness of today’s pants, his dick was easily visible. Given that the petite girl had not only seen but sucked his cock the day before, that was quite the reaction. But part of the giant hoped his first lover never got so used to him that she would stop blushing like that. She was just so cute.

After a moment of fiddling with her pen, Yumi wrote another message for him.

That way too.

That wouldn’t have been Mason’s first guess. Then again it was easier for a woman to hide her arousal than a man. He was almost jealous. Then again he really only had himself to blame for the difficulty of hiding his erections. And there was no telling what Lilith would have done if a lady ended up with the Luxuria app.

He threw a contemplative gaze Yumi’s way. An idea formed in his mind. Mason had been thinking of doing something like it later. But he wondered if they could do something like that now. Still, he would give Yumi a chance to use the G-Word before anything else.

Do you want to try something? He wrote. The short Asian girl stared at his message for a whole minute. Before her bespectacled eyes flitted around wildly at their classmates. Mason could practically see the gears spinning wildly in her head. But after a long moment, Yumi swallowed hard and quickly scribbled something down. No doubt scared of losing her nerve.

Yes.

The blond teen was impressed by her gumption, even with the Subby for Hubby trait helping her say yes. So he decided to test just how far she was willing to go.

Do you remember what I told you to do yesterday?

Instead of answering with words, Yumi gave a small, stiff nod of her head. And the noticeable squirm of her slender hips told him she was remembering the correct thing. Mason did his best to maintain a neutral expression. Worried about either looking suspicious to someone else or ruining the spell for Yumi.

Then ask to go to the bathroom. And send me a picture so I can see if you followed my orders.

He was ready for her to try and talk her way out of it. Or maybe just to say that she genuinely didn’t want to do that. Or just stall for as long as possible. But instead Yumi almost instantly, though trepidatiously, raised her small hand.

“Yes, Yumi?” Mr. Garvey asked.

“M-May I go to the bathroom?” Yumi asked only barely loud enough for their teacher to hear.

“Alright,” He told her. “But don’t take too long. We’ll be starting the lab soon.”

“Th-Thank you.” Yumi slid off the stool and scurried towards the door as fast as her short legs could carry her without running. Mason wasn’t sure if that meant she was nervous or excited. Having known her for years, and seeing both Excited Yumi and Nervous Yumi plenty of times, his best guess was a little of both. But either way, she grabbed the hall pass, a piece of wood painted by Mr. Garvey’s daughter when she was six, and headed towards the bathroom.

Once she was heading down the hall Mason waited for his chance. When his teacher turned to draw a diagram on the board, he slipped his phone out of his pocket and laid its screen up in his lap. The blue-eyed teen double-checked to make sure his phone was silent.

Then all that was left was to wait. He was a little worried that he wouldn’t have the patience to wait it out. With every passing second, he grew more and more excited to see exactly what she would send him.

But it turned out that he didn’t have to wait for long. His screen lit up, a notification letting him know that Yumi Kamiya had sent him a message. Mason eagerly unlocked his screen and opened his messenger.

As promised she had sent a single picture. Yumi had (predictably but wisely) chosen to take the picture in a stall. She had also taken it while standing, the phone looking down from Yumi’s point of view. The phone seemed to be in her right as the left was pulling the hem of her sweater back and up, giving him a glimpse of her flat tummy and boyish hips. Down from there, her slim, pale legs stretched down to the floor. And gathered around her ankles were her discarded jeans and a pair of pink and white polka dot panties.

And in the center of the frame was her bare mound. Where just the day before had been a thick coating of whisky black hairs, there was now nothing but silky smooth skin. To give Mason the best possible view Yumi rocked her hips forward, letting her boyfriend have a good look at her bald cleft. He even caught a peek of her minuscule, pink, inner lips.

For a moment Mason wondered if they were really as wet as they looked. Maybe they had just caught the light from her camera flash. But a second look revealed a noticeable wet patch in her cute panties.

That simple image was all it took for him to go from half-erect to throbbingly hard. It also reminded him how glad he was to have a privacy screen protector. Even if he originally got it to protect himself from Viv’s prying eyes.

It didn’t take long for Yumi to return, her face a brilliant crimson and her eyes downcast. She quickly hurried back to her seat where she gave Mason an embarrassed, but proud smile. Lust was flickering in her hazel irises and rumbling in Mason’s chest. But with all the blood rushing to his cock, the blond teen could only think of two words to write.

Good girl.

The dainty girl ogled the crotch of his jeans. Her tongue flicked out to quickly wet her lips before she realized what she was doing. Even though Yumi averted her eyes and looked about ready to die of embarrassment, she still responded with a message of her own.

I’m glad you like it.

True to his words, it wasn’t long before Mr. Garvey announced it was time for the day’s lab. They were going to culture bacteria, then next class they would try and identify what type of bacteria they grew and test different disinfectants to see which one was most effective. As he walked them through the process he took a series of prepared culture kits, one for each table.

“Alright come and grab one,” Mr. Garvey said, “When you’re done bring them to me so we can put them in the incubator. And if you get done earlier feel free to get your homework done or just relax. Your choice.”

“I’ll get it,” Yumi offered, quickly moving to grab their kit. Given his current penile situation, Mason was hardly going to argue. Especially since watching Yumi’s butt as she walked away didn’t help. So when she returned he was sure to tell her so.

“Thanks,” Mason offered with what he hoped was a charming smile.

“No problem,” Yumi said happily. “I figured that would be a little embarrassing. If everyone saw… Um, I mean… I wouldn’t mind… If, you know, the other girls…”

“I’m sure you wouldn’t,” The tall blond said with a chuckle. He was honestly impressed with how into her harem fetish his Japanese lover was. Especially given that it existed without Lilith’s intervention. One day he would have to ask her exactly how many other girls she wanted her boyfriend to be dating since it seemed the answer was more than two.

But that would have to wait. However horny the two were, they were first and foremost huge geeks. So they jumped straight into their lab work. Each group was free to choose exactly what the source of their bacteria would be. So the two of them chose to go the simplest route and just used Mason’s mouth. So after laying out their four Petri dishes, one control group and three to experiment on, Yumi carefully swabbed the inside of the gigantic teenager’s mouth. Then carefully applied the swab to the agar in each dish.

It was almost a romantic activity. Yumi’s small, warm hand on his cheek. The two leaning so close they could stare into each other’s bespectacled eyes. But the tender moment was more or less ruined by cotton rubbing the inside of his cheek.

As she pulled the last swab out of Mason’s mouth, Yumi asked him a question in a hushed tone.

“Um, are you still going to talk to Ms. Bailey today?” The Asian girl didn’t look him in the eye. Instead, she applied the swab to the last dish. And began marking them, even taking a picture of the four of them on her phone.

“Yeah,” He said softly. “I was going to go see her during lunch.”

It had seemed like the best option he had. He still had to help Ms. Rosso out after school today. So going at lunch would ensure the two had as much time as they needed. And thanks to asking her about a project earlier in the semester, he knew what lunch period Ms. Bailey was free.

Yumi gave him a nod and a small smile. Then without another word, and a glance at Mason’s still half-hard dick, she brought their work up to Mr. Garvey. The individual dishes were placed on a metal tray and placed into an incubator. But when she returned, the short girl had a determined look on her face. She sat down next to him and spoke.

“C-Can I… ask for something.” Despite her resolute expression, Yumi’s voice came out quavering and meek. The display melted Mason’s heart.

“Always,” He said warmly. “Please don’t ever feel like you can’t.”

That seemed to buoy the Japanese girl. She smiled up at him, hazel eyes shining with love.

“Thank you,” She said, more heartily. “It’s just that I know this is all happening fast. But I need to ask. Can we also ask Vina today?”

Mason was a little surprised by that, but then again Yumi had been very happy when Mason brought up their Indonesian friend during yesterday’s dirty talk. And today did give them an opportunity since the three had already planned to hang out after school.

“It’s just,” Yumi continued when Mason didn’t answer her. “I hate to feel like we’re keeping a secret from her.”

“Yeah,” He agreed. Vina was the type of girl who trusted her friends unconditionally. And violating that trust just felt like kicking a puppy.

“And whenever I thought about… this,” She said, conscious of the fact that they weren’t alone. “Vina was one of the first girls I thought about. And-“

“It’s okay Yumi,” Mason gently interrupted her. “You’re right.”

“So we’ll…”

“We’ll ask her today,” Mason said with finality. While he would have preferred to wait until he could upgrade his You Rapscallion trait at least one more time, he only had 181 gold at the moment. It would be a while before he could upgrade it one more time. So he would just have to trust what he had and hope for the best.

They spent the rest of the period working together on the day’s homework. Mason wondered if Yumi too was trying to formulate some sort of plan of attack. He certainly was, both for his teacher and his friend. But eventually, the bell rang. And the two were **** to split up.

As they packed up to move out though, Yumi pushed her notebook at him one last time.

I love you, Mason.