Izuku tried his best to not fall into a perpetual state of panic as he followed Nezu's directions, but he just couldn't stop thinking about his and 13's problem.

All the ways this situation could go wrong haunted him the whole way and he nearly got caught by a few girls in his frantic state.

Izuku slapped himself in the face as he came up on the building Nezu's map lead to.

"Pull yourself together Midoriya! Panicking won't solve anything!" he scolded himself as he focused on the building.

It was an auditorium, where UA often held special events and orientation, sans Aizawa's classes of course.

Izuku signed as he pulled out the keycard Nezu gave him.

"Just what could I possibly need from here?" he thought aloud as he used the key and the blast doors slid out of the way, allowing Izuku in before slamming shut behind him.

Izuku squeaked once through but not from the doors trapping him inside.

No, that would be from the deranged scribbling all over the walls and the altar with an effigy of him at the podium, making the place look like the church of some cult devoted to him.

Izuku came to the very sudden and dreadful realization that it wasn't someTHING he needed. It was someONE.

Nezu had sent him here ether for a quirk or because this girl was loosing it.

Probably both, what with the many, many images of him, ether with hearts or in provocative poses, and even more barely legible words scribbled on the walls. Several of which being too lewd for Izuku's liking.

He was far more concerned with the sentences that went like "won't got away again" and "mine forever".

Clearly this girl had been suffering major Deku withdrawal all day.

But who did Izuku know well enough for them to get this bad, that he hadn't already calmed or who wouldn't be able to escape easily.

And why was everything in English…

CLANG!

Izuku jumped at the sudden noise as he realized he had been too caught up in pondering and was likely still too shellshocked from 13 to remember he wasn't alone in here.

A fact he was violently reminded of, as he looked up to see a silhouette, standing atop a massive cannon that had been slapped together with whatever could be found in the room. Which was a lot, given how hight tech UA was.

The clanging he heard before had been one of the massive bolts holding the thing suspended in the air, which the woman had removed so it would aim downward at Izuku instead of the door as had been originally intended.

All Izuku had time to do was stare dumbly up the barrel of the cannon as it began to glow.

…

"Shit!"

BOOOOM!

Izuku screamed as he darted across the room with One For All to escape the blast, only to get caught in the shockwave and slammed into the far wall.

…

Izuku groaned as he pulled himself out of the human shaped hole in the wall. His back burning from the intense heat.

Izuku's eyes bugged out as he looked back and saw a massive crater with molten metal pooling at the bottom.

"Holy shit!" Izuku thought before looking up at the canon. It's barrel spilt open like a banana peal and the whole thing about to fall, along with the girl hanging onto the edge for dear life.

"Oh no!" Izuku yelled as he used One For All and jumped, just as the cannon came loose and started to fall.

Izuku caught the girl mid fall and held her close as he landed on the upper balcony.

The young hero breathed heavily as he looked back and watched the molten metal splash up out of the pit before settling back down.

"Just who is this girl!? Mei's twin or something!" Izuku thought as he was both amazed and terrified by the patchwork invention.

"Izuku…" the girl spoke and Izuku gasped as he remembered her and was surprised by the American accent.

The girl quickly tackled Izuku onto a makeshift bed made out of dismantled auditorium chairs that Izuku hadn't noticed.

In fact the whole upper balcony had been converted into some kind of hacked together alter/sex room.

Fortunately, Izuku didn't have to try very hard to ignore the more… inventive… sex toys that littered the area. Because Izuku's focus was engaged solely with the blond haired and naked girl looming over him.

"M-M-M-M-M-M-Melissa Shield!?" Izuku stuttered out on shock as the woman practically drooled at the sight of Izuku, whose shirt had been burned and ripped off by the immense heat and shockwave.

"That's right Izu~… AND I'M NEVER LETTING YOU GET AWAY AGAIN!" Melissa answered with sadistic glee before smashing her lips desperately into his.

Izuku was too stunned to move or reciprocate. Melissa had always been a bitter sweet part of his life. A good friend that he'd endeavored to keep in contact with. And yes, even as dense as he was, Izuku himself had to admit that part of him had wanted there to be more between them at some point.

But they each had their own issues and studies to focus on. Izuku with UA and All For One, and Melissa with her own work and helping her dad after the I-island incident, which did little to help her own career. And on top of all that, they lived nearly half a world apart, and until recently, Izuku had a less than stellar opinion of himself in regards to the ladies. So he'd resined himself to the idea that it could never work out.

Now that impossible dream was being rammed down Izuku's throat along with Melissa's tongue, as he came to the shocking (to him) revelation that she must have felt the same, given how much she was effected by his quirk.

By the time Izuku's brain started working again, Melissa had finished her desperate kiss and sat up on Izuku to show off her impressive assets and rub her bare and soaked womanhood against Izuku's clothed crotch.

"Like what you see~" Melissa spoke in what might have been a sultry tone, if it weren't so desperate and insane.

Izuku wanted to stutter out an answer of some kind, regardless of if it was intelligible or not, but he was a bit too caught up in the American woman's large cleavage with decently sized, dark nipples.

Her curvy figure and sizable ass complimented this and Izuku found himself with a nose bleed, which he'd thought he had become immune too.

Melissa wasn't much better though. She had been so desperate for Izuku, especially after believing him forever out of reach, and now she had him at her mercy.

Unfortunately, Melissa's overactive imagination and overwhelming feelings caused her to get caught up in her own head. She wanted to do anything and everything with Izuku but couldn't figure out where to start.

Her eyes would shoot wide with surprise though, as Izuku shot up and kissed her deeply while wrapping his arms around her and smushing her large breasts into his chest.

They were both surprised that Izuku was the one to make the first move. But after everything he'd been through so far, having his insecurities and morals worn down, Izuku just couldn't hold back. Not when he had a chance with the one girl aside from Ochako that he'd actually wanted to pursue a relationship with before today.

As for Melissa, she was caught between desperate, ravenous hunger demanding she devour Izuku right now, and the shy girl squealing with joy at finally getting to be with her long standing and unattainable crush.

Izuku seized the opportunity granted by her indecisiveness and spun around with her in his arm before gently pushing her down so she was lying underneath him on the makeshift bed as he continued to kiss her while pressing his chest against her's.

Not that she could have done anything to resist his actions in the first place. Melissa was a civilian, and as such Izuku wouldn't have even noticed any attempt at struggling with his obscene strength and the many heroes he had grow accustomed to sleeping with.

And so, Izuku ran his hands over the woman's body. Gently caressing her shoulders then her sides before running his hands back up to caressing her sizable breasts.

Izuku had to lift himself up off Melissa a little so he could fully explore her chest with his hands. This gave Melissa room to squirm in torturous pleasure and denial.

She made no attempt to object though, in spite of her instincts screaming at her to breed immediately. Her desire to be loved by Izuku winning out now that he was actually satisfying her desires.

Instead she moaned in pleasure as she reached up and tangled her fingers in Izuku's messy hair as they continued to kiss while Melissa rubbed her womanhood against Izuku and he replayed in kind. The both of them grinding against each other as Izuku worked her breasts in his hands, sinking his fingers into the foreign woman's squishy pillows.

Soon his hands began to wander downwards though as he finally broke the kiss.

"Izu…" Melissa said breathlessly but soon found herself gasping for other reasons, as Izuku began kissing his way down her body, starting with her neck and collar bones, then the valley and inner walls of her breasts.

He then kissed his way down her flat and soft belly as he caressed her sizable ass.

"Ah!" Melissa suddenly yelped and her nails dig into the makeshift bed as Izuku reached her womanhood and he waisted no time in digging in as if she were an ice cream on a hot day.

Izuku knew he should just get to it as fast as possible. But he now had actually control of his quirk and he wanted his time with Melissa to be a bit more special then that.

Of course he knew that meant he also needed to show the same treatment to the rest of his girls once this was over, but he'd already decided to do that long ago.

He also knew that he should be asking why Melissa was even here in Japan in the first place, but he shoved that aside for now, in favor of focusing on making the girl he'd long since given up on, experience the most pleasurable sex of her entire life.

And if he was correct in his current observations, the first sex of her life.

"Ooooohhhhh!!! Izu~…" Melissa moaned as she reached down to hold Izuku's head in place as she ground up into his face when she wasn't squirming uncontrollably.

Izuku took that as the signal to redouble his efforts and he lifted her legs up a little and caressed them as he delved deeper with his tongue.

"YAAAAHHHHHH!!!! IZUKU!!!" Melissa screamed as her back suddenly arched and she began squirting in a powerful orgasm. Her lack of experience coupled with her hours of overstimulation with no release, causing her to climax fast and hard. Her screams rising in intensity as her back arched further and she continued to squirt more and more.

Izuku finally pulled away with a gasp as Melissa fell back to the makeshift bed, panting and dazed. He quickly used a nearby rag to clean off his face before removing his pants and crawling back up over Melissa's body.

Melissa focused back on Izuku when she felt something tap against her entrance and finally noticed him cupping her cheek.

"Ready?" he asked softly and with a caring expression that did not match the raging desire they both felt.

Melissa didn't say anything in response. Instead she leaned up and kissed him desperately and Izuku took that as his sign to proceed and began slowly pushing inside her.

Melissa would have cried out in pleasure had Izuku not kept their lips sealed together. He didn't stop or slow down though. Instead he grabbed her shoulder with his left hand while he used his right to interlace their fingers, both to offer support and for leverage as he moved further and further inside. Taking her virginity and almost fully sheathing himself in her. Even then, his tip still tapped against her cervix and she finally broke the kiss to toss her head back and scream in pleasure as she orgasmed again, just from Izuku filling her.

Izuku grunted as he felt her constrict around him and he tried to keep a reasonable hold on his quirk. He might be actively trying to make an excessive amount of quirks now, but he didn't want to overdo it.

Izuku paused before he could start moving as he thought of this. His eyes then locked on Melissa's beautiful and pleasure drunk face.

"Melissa is quirkless…" Izuku thought as he slowly began to move back and forth. Making slow and shallow thrusts.

"What kind of quirks could our children have…" he pondered as he continued his slow lovemaking. Melissa's inexperience causing her to feel so much pleasure that she didn't care he was moving so slow.

Their shared quieklessness had been one of the things that drew them together.

It didn't matter that Izuku actually had one this whole time. He hadn't known about it and had been functionally quirkless his entire childhood and early teens, and Melissa had leaned his cover story about getting his quirk late in life when he got One For All, so the feeling had been mutual.

Now though…

Izuku felt a hint of guilt that had always been their grow stronger.

He'd gotten to live his dream. To cheat life and get a quirk in spite of it. That had been another thing that caused Izuku to unconsciously distance himself from Melissa.

Now he knew he actually had a quirk from birth, even if it was such a lewd one, and that only made his guilt grow.

This internal struggle also caused Izuku to unconsciously increase the speed and depth of his thrusts a little. His tip starting to poke through her cervix a little.

His mind inevitably came back around to the quirks he could make though.

With all the other girls he always had some kind of idea beforehand, but Melissa was a blank slate. He had no idea what to expect or if he even could safely make quirks with her genes.

Izuku stopped suddenly as that last thought crossed his mind and his horrible childhood flashed before his eyes.

This gave Melissa time to adjust to having sex for the first time and to look at Izuku with confusion and impatiences.

Before she could raise her voice in protested though, Izuku suddenly began thrusting hard and fast and Melissa screamed in pleasure as Izuku finally went all the way in, breaching into her womb and hammering it unmercifully.

Izuku couldn't help himself. The idea of his kids suffering as he did lit a fire in him and he was determined to never let them be quirkless.

Hell, Izuku was now pretty much dead set on giving Melissa a quirk once this was all over.

Regardless, Izuku's heightened emotions caused him to let his control slip a little and he was now plowing Melissa with vigor, sending her legs up in the air before she locked them around Izuku as she cried out in pleasure.

"Yes! Yes! Yes! Never let me go again Izu!" Melissa yelled in English and Izuku lowered his head down next to her's.

"I promise… I'll never let you go… never again!" Izuku replied before kissing her deeply.

Izuku then noticed Melissa's breasts bouncing up and hitting his chest and he pushed himself up to watched them for a moment before descending on them like a starving man and sucking hard while letting go of her shoulder to work the other one.

Melissa was now free to cry out and scream as Izuku brought her to orgasm after orgasm while he greedily suckled on her sizable tits. Eagerly awaiting the delicious nectar and the information on what quirks he could make and give to their children.

…

He was not prepared for what he received though, as Melissa cried out in pleasure and surprise when her breasts grew two cup sizes and her nipples darkened as they grew a little and begun spraying milk.

Izuku however paused in his thrusting again and his eyes shot wide.

Then green lightning began to surge as he fully lost control of his quirk and instincts.

CRACK!

The makeshift bed buckle beneath them and Melissa's mouth hung open in a soundless scream as Izuku truly went to town on her. Not just with raw speed and strength but actively using his quirks to amplify her pleasure.

"HOLY SHIIIIIIIITTTT!!!" Melissa finally found her voice and it was an octave higher than usual.

Izuku couldn't help it.

Melissa's genes weren't a blank slate at all.

They were clay…

They were putty in his hands to be freely shaped with no limitations but Izuku's imagination and skill.

Unlike every girl before, Izuku had zero restrictions on what quirks he could safely make with Melissa.

His own natural reaction combined with his quirk's and Izuku couldn't stop himself from hammering Melissa like a man possessed as he drank from her breasts as if it were a drug.

He just had to breed her. He had to.

Had to make her feel so much pleasure she would beg him to do it again and again for the rest of their lives.

Before he could go too far though, Izuku's rationale mind, fueled by concern for Melissa and their future kids, wrenched control back as he realized he was about to go too far.

So he willed his quirk back under his control and gripped Melissa's hands with both of his before forcefully prying his lips from her breast. Inadvertently tugging it back before finally releasing it and letting continue to spray.

"Melissa!" Izuku called out but she was too overwhelmed to respond. Not that it would have changed the outcome anyway.

And so Izuku cried out as he suddenly exploded inside her in a particularly powerful orgasm that caused her belly to bloat a little.

Apparently Melissa wasn't totally overwhelmed yet though, as she felt him filling her and responded with a powerful scream of pleasure and an even stronger climax, causing her back to arch, thrusting her breasts up to tempt Izuku again before collapsing in a daze.

Izuku likewise collapsed on top of Melissa and rested his head in between her breasts as he panted for air. His body steaming.

Izuku gently caressed her body for a moment as he enjoyed the afterglow, but quickly winced and clutched his head.

Izuku suddenly found himself immobilized by a combination of pain, disorientation and hyper awareness leading to his vision going white and his ears ringing.

This wasn't just quirk overload ether.

Rather it was one particular quirk manifesting that had him in such a state.

He was so overwhelmed that he lost track of time and his sense. Only regaining some sense of self again to realize he had been flipped on his back with Melissa straddling him and bouncing up and down on his still hard manhood.

He was surprised she even had the energy to move, but he didn't actually know how long he had laid their with her and her belly was already massive, so she may have had time to recover.

Any doubts that his feelings for her had been mutual were washed away though, as he saw the madness and desire still burning in her eyes as she carefully but vigorously continued to have sex with him.

Izuku was still unable to move though, so all he could do was just lay there and let her work all of that neglect and lust out of her as he slowly adapted to his new quirk, in addition to all the others he just received.

"At least I didn't go as far as twenty this time…" Izuku muttered with discomfort and pleasure as he watched Melissa's massive, pregnant belly bouncing up and down with her and her large, leaking tits.

"Nineteen isn't much better though…" Izuku sheepishly admonished himself but couldn't find it in him to truly care at the moment, as he watched the beautiful and heavily pregnant woman bouncing on him and bringing them both immense pleasure for as long as it took for Melissa to satisfy herself and for Izuku to recover.

…

It was going to be a long night…

A/N -

(309 total)

(Harem size 29)