"So uh… I suppose we're not doing any research on me until all the zombies are replaced?" Naruto asked. It was hard to tell time here, with the sky a constant gray sheet without so much as a visible sun, but he figured it was at least afternoon. She was working on her fourth batch of brain-zapping potion when he finally found the nerve to speak up.

"Security comes first,"

"Sure, sure," he agreed without thought. Given the last two experiments, he wasn't exactly in a hurry to continue with it anyway; he'd only asked because the wound had been closed for hours and he was sick of standing around. The top knuckle of his pinkey did not grow back, as it turns out. Suffice to say, the skin had healed over, and the pain had long faded before he shared this info with his studier.

"I have a book on Fey I'll thumb through over dinner. I'll even work on it while you cook. If you cook,"

"I mean, I'm not a chef, but I can probably manage that,"

"You can boil us pasta; it's hard to fuck up," she continued, still yet to look at him. Her focus locked on the little beaker as she added a small pinch of soil to the liquid. That was the final step. It caused the simple yellow-brown mix to hiss and bubble and darken as the specs dissolved, which of course meant it was time for him to stuff his arms into his sleeves.

"If the reanimation process rattles you so badly, you can stay in here," she offered with just a hint of judgement. It might have irked him if she wasn't wearing a ghost of a grin. Naruto opted to smile snarkily as he corrected her.

"I'm not hugging myself because I'm scared; it's fucking cold out there!" not that he wasn't scared, or at least unnerved greatly, by the process.

"Oh… right. Humans are much more sensitive to the air up here. Or… human-based imposters, I should say," Karin muttered half to herself. Almost embarrassed as she picked up the, surprisingly clean, bonesaw and went through the wide doorway. It gave him a chance to look over the books, although what he hoped to accomplish with this he didn't know. Illiteracy made identifying the Fey book a wee bit difficult.

Thankfully, his host didn't question his staring at the small library when she returned. Even more thankfully, she selected one and made for the stairs! Confirming before she disappeared what her action meant.

"Come on then, let's eat,"

Naruto flew down the stairs! Although watching her skim a large leatherbound book didn't really make much of a show, and the glare she shot him suggested that his watching wasn't appreciated. That, or she wanted him to get cooking.

An easy enough request. The hardest part of that task was finding the noodles in her cluttered cupboard. Gathering, melting, and boiling snow took more time than cooking the meal, even with Karin informing him, to his delight, that there was a block of cheese to grind over the simple grains! Her willingness to share it with him reinforced his appraisal; this necromancer was a good soul.

Even better, by the time his plate disappeared, she was almost completely through the book! She hadn't actually shared any useful information or said anything non-cheese related to him since sitting down, but there had been a few soft hums that showed her engagement in the reading. It gave him hope.

"Tell me, have you discovered any other powers aside from healing?" she asked without looking up.

"Uh…. well, there is one thing, but it's kind of…" he chuckled as he trailed off, her stern stare goading him to suck it up and continue. "My uh, my penis, it changes size. Like, drastically, I mean, it grew to giant size when I was lying on my giant… friend, shrank back down later with the human,"

"Interesting," she flipped backwards through the book, staring at a page for a good while in silence. Naruto perked up yet further, smiling wide once more in anticipation! Then she sniffled. Then, slowly, a hand came up to cover her face as she began sobbing. Naruto blinked.

"W-What's wrong? Is it something ba-"

"-it's nothing to do with the book or you," she cut him off, softening his concern but leaving him worried. "I just… my research won't be done in my lifetime; I know that! All my families work, it might all be for nothing if I don't have an heir to pass my notes onto. I need to have a child, and I know you're my best chance I just…"

Naruto was far too dumbstruck to speak. The sudden revalation and the abrupt change of topic were enough to have his mind reeling with wonder. Not to mention the intimate details being disclosed so openly by someone who'd barely said a word about her feelings thus far in his stay. It was just as well, she continued quickly.

"Even so, I-I just can't bring myself to sleep with you. I'm only attracted to women; the thought of a man on top of me is revolting! It's not even the cock I like that; it's just the male form!"

Naruto was so stunned by the info, so stuck in his own discombobulated head, that he barely noticed.

Karin did. The way her guest's body immediately began to shrink and shift. It was just barely perceptible, even focused and watching him. With the awareness this young man had displayed so far, she wasn't shocked that he didn't realize what was happening until his breasts were the size of treefruits. Those sea blue eyes, so much larger now on his more pointed, feminine face, widened in absolute shock.

"Oh my god," she gasped, feigning shock.1 "…do you still have your…"

Naruto wasted no time checking; he was a wee bit concerned himself, you might imagine.

The dick was still there! Karin apparently got her answer from the massive relief visibly washing over him, standing and taking his hand without hesitation. Not even when he began blubbering and stumbling, desperate for just a second to ponder these events; he hadn't even connected this transformation to her earlier words yet.

Then he saw the bed.

Her room was fairly empty, at least based on the quick glance he got. Karin wasted no time lurching our hero onto the bed via the single arm she'd been leading with. Everything focused up quick when she shrugged her fur coat off.

The faint, ice-grey skin was smoother than he'd have guessed, free of scars or blemishes too, despite the abundant muscle that made her undershirt cling so deliciously tight to her. It was a wonder how those cantelope-sized breasts had been stuffed into the thing! Her hips were wide too, and bare by the time Naruto's eyes got down to them.

Her snatch was highlighted by a puff of vibrant red around it.

"Wait wait wait," he said, for some reason, when she began to crawl over him.

"What? You can't do me this favor? Am I so ugly?" she asked, her voice so low that it made him look up at her face. Her eyes were sad, almost hollow, showing a vulnerability he'd yet seen. Something about it made her so alluring; maybe it was the angle, looking up at her from flat on his back, or the massive fertile boobs on the south end of his peripheral vision.

"Th-that's definitely not it," he began, voice high and unfamiliar in his throat. "I'm sorry, this is just…weird. My body is all small and… sensitive; i-it just feels so awkward!" Naruto eventually settled on. "Y-you are incredibly beautiful though! Honestly, I'm not just saying that! I'd even wondered earlier if you were something….. uh… inhuman…or in-orc or…. you know, because of the bright hair and eyes!"

Karin let the rambling continue as she perched over him silently. The words were sweet, and given what was coming next, she saw no reason to fight her body's reaction to them. A reaction that grew all the more pronounced when she let one huge hand squeeze the…. boys breast. An action that earned another high squeal and restarted the sputtering of her mouth.

"Gods above and below. Y-you actually want to…"

"I wasn't lying before," she hadn't exactly been honest either, but that wasn't the point. "I need an heir; you seem like such good stock," she purred out, coming down lower to further dominate her much smaller guest. This was a true miracle. A Fey of his breed was about the best she could hope for in a father, especially this far from civilization; it was enough to have her accelerate the reproductive mission that had been set aside.

"Okay I… I guess this is okay," Naruto mumbled, trying not to blush to pink as the orcish woman's face honed yet closer towards his. This was fine. This was a hostage situation; it's not like she could be defied! Sasuki would understand.

Hopefully.

She chuckled before stealing a kiss. That felt normal enough, kissing a beautiful woman. The feel of it wasn't any different than when he did this in his natural state; it was easy to get lost in sensation, and that was something he had no qualms with right now. When she actually lay over his body and his hands instinctively came up to squeeze at her breasts, mashed so delightfully against his, he saw the perks of this form.

So much boobmeat to play with…

Bliss, pure bliss.

"Does this feel normal? Correct?" Karin asked against his lips, stealing a peck before he could hope to answer with her hand squeezing his covered cock.

"Y-yes? I think,"

"Good," her fingers begin to tickle and fondle his sack. Good fuck, was that more sensitive too? How did any of this work?! "They certainly feel right, huge and full of cum, ready to fill me up properly…"

Naruto swallowed as she slid his pants down, cringing yet further when she immediately sank down on it without so much as a word of warning. It wasn't as if he had a good angle pinned under her mammoth body! So hard and firm and powerful! Such a contrast from the soft, smooth sanctuary sliding up and down his rod, gently clapping her hips down against his thighs with each slow bounce.

It was about all he could do to lightly rub her breasts and respond to the aggressive kiss that this intense woman refused to pause. Her tongue pinning his and plundering the interior of his mouth like an invader! At least she was enjoying herself, if the groans he swallowed were any indication. Naruto himself was keeping mostly quiet, not exactly thrilled with his new voice.

All the same, he screamed when he came.

Karin began bouncing aggressively, enough to nearly hurt his thighs with the force of her weight! Breaking the kiss to cry out a long, triumphant yet feminine yell as the rhythm of their fucking grew erratic. He didn't stand a chance.

Filling her felt incredible, more like a relief than normal.

A reprieve, however brief

"So. If I lick all the juices off that cock, do you think that would get you hard again immediately?" she coyly whispered into his ear.

Extremely brief.