My Shape-Shifting Lover

Shinji smirked, brushing his fingers through Yumi's messy hair. His voice was low, teasing, but held a certain possessiveness that made Yumi shiver.

"My body already belongs to you," Shinji murmured, pressing a kiss against his jawline. "You can have it whenever, however you want."

Yumi felt his heart squeeze at those words. He knew Shinji meant them. Every touch, every glance, every time they made love—Shinji had always given himself so completely.

But then—

Shinji's lips curled into a mischievous smirk. "But you…" He dragged a hand down Yumi's waist, tracing the curve of his hip. "Your body isn't just yours either, is it?"

Yumi blinked, confused. "What?"

"Your shapeshifting ability." Shinji chuckled, lips brushing against his ear. "It's for me to exploit, isn't it?"

Yumi turned red. "W-what are you talking about?"

Shinji rolled them over so he was above Yumi again, looking down at him with that stupid, cocky grin. "I need more."

Yumi stared at him. "More?"

"Yeah." Shinji licked his lips, his hands sliding down Yumi's sides. "You already look perfect to me. But imagine…" His voice turned playful. "You shifting into my favorite anime girls."

Yumi's face turned bright red. "You—what?!"

Shinji laughed at his reaction. "You heard me."

Yumi's mouth opened and closed, completely dumbfounded. "You pervert!"

"C'mon, baby," Shinji whispered, brushing their noses together. "With the fullness, the curves, the details." His hands squeezed Yumi's soft hips, as if emphasizing his point. "It's just a little fantasy. And you can make it real."

Yumi groaned, burying his face in his hands. "I hate you."

Shinji laughed, pulling his hands away to kiss him again. "You love me."

"I do," Yumi grumbled. "And that's exactly why I hate you."

Shinji chuckled, pulling Yumi closer. "So? What do you say?"

Yumi sighed dramatically, but the tiny, mischievous glint in his eyes told Shinji he wasn't entirely against it.

"Fine," Yumi muttered, "but I swear if you ask for a cat-girl, I'm kicking you out of bed."

Shinji grinned. "No promises."

Yumi groaned again, but the way he was already thinking about which forms to take meant he was more into it than he let on.

Shinji's eyes glinted with mischief, his fingers still lazily stroking Yumi's side. "Alright then… turn into a cat-girl."

Yumi froze.

He blinked at him, wide-eyed. "I just said not to ask me that," he growled, ears twitching slightly in annoyance even before they had fully shifted. "You're seriously—"

Shinji leaned in, silencing him with a kiss. Slow. Deep. Lingering.

Yumi melted against him, his irritation dulled by the warmth of those lips. When they parted, Shinji whispered against his mouth, "You're too cute when you pout. Indulge me, Yumi."

Yumi sighed dramatically again, cheeks flushed. "You're unbelievable."

But his body shimmered faintly, the soft glow of his Kai activating. In moments, his already feminine frame grew a little smaller, more delicate. A pair of soft, white cat ears sprouted atop his head, twitching lightly. A long, fluffy white tail extended from behind him, curling lazily around Shinji's wrist.

Shinji's eyes gleamed like a boy on Christmas morning. "Oh my god…" he whispered, brushing his fingers against the soft fur of Yumi's new ears. "You're perfect."

Yumi gave a low, warning growl in the back of his throat, but it quickly melted into a soft gasp as Shinji scratched behind his ears. His entire body shivered.

"S-Stop that…" Yumi whispered, face turning red.

Shinji only smirked, moving his hand down to the swaying tail. "But this is the best part…"

"No—don't—"

He squeezed it. Gently, but firmly.

Yumi arched into him with a soft, choked moan, his legs trembling, eyes fluttering half-shut.

"Ah—Shin…ji…" he gasped, his voice caught between a growl and a whimper.

His body twitched, paralyzed with overwhelming pleasure as Shinji's fingers traced down the length of his tail, then squeezed it again—this time a little harder.

Yumi's hands clutched the sheets, nails digging in, breath catching in his throat. "S-Stop, I can't… I can't move…"

"Good," Shinji whispered against his neck. "You don't need to."

He kissed down Yumi's shoulder, down to his chest, while one hand continued to tease the tail—each squeeze drawing a soft, helpless moan from Yumi's lips.

"You're so sensitive like this…" Shinji murmured. "It's driving you crazy, isn't it?"

Yumi whimpered, body trembling. "I hate how good that feels…"

Shinji chuckled, licking just under his collarbone. "That's what makes it fun."

Shinji didn't stop playing with the soft, twitching tail in his grasp, but his voice lowered into something more thoughtful—warm, intimate, almost reverent.

"You know…" he murmured, fingers easing up a little to give Yumi a moment to breathe, "I always wondered why I didn't push this side of you sooner. Why I never really exploited your shape-shifting the way I could've."

Yumi, still trembling lightly, peeked up at him with flushed cheeks and half-lidded eyes. "W-Why didn't you?" he whispered.

Shinji looked down at him, brushing a strand of silvery hair away from Yumi's face. "Because I was scared."

Yumi blinked. "Scared?"

"Yeah." Shinji smiled faintly. "Scared that if I treated you like a fantasy, I'd forget you're real. That you'd think I only wanted the illusion… the body, the gimmick… not you."

Yumi's expression softened, ears flattening a little. "Shin…"

"But now," Shinji continued, voice barely above a whisper as he leaned in closer, "I know better. Because everything you become—it's still you. Your scent. Your heartbeat. Your warmth." He touched Yumi's chest, where his heart thumped wildly beneath his skin. "All of this… belongs to me."

He kissed Yumi again, tender this time, slow and deep and grounding.

"And I want to see every version of you," Shinji whispered against his lips. "Not because I want something fake… but because I love all of you. Every shape, every sound, every trembling little breath you give me."

Yumi's lips parted, and for a moment, he didn't respond. He just stared—his heart full and heavy and aching in the best possible way.

"…I hate how much I love you sometimes," he whispered shakily. "It hurts."

Shinji smirked, nuzzling against his nose. "Then let me make that pain worth it."

Yumi barely had time to recover from the last slow kiss when Shinji's fingers returned to his sensitive tail, curling around it with maddening precision. A soft gasp escaped Yumi's lips, his body arching involuntarily as his legs tensed, breath caught in his throat.

"Still so responsive," Shinji purred against his ear, then gave it a teasing flick with his tongue, making Yumi whimper. His other hand drifted up and softly cupped one of Yumi's cat ears, rubbing it in slow circles.

"Sh-Shinji… d-don't…" Yumi's voice was already trembling.

"Don't what?" Shinji teased, grin practically audible. "Touch your cute little ears? Or maybe…" His fingers slid lower, lightly gripping the base of Yumi's tail again, "this weak spot?"

Yumi let out a low, needy growl—but it was more flustered than threatening. He was melting under Shinji's touch, practically paralyzed in pleasure.

And then Shinji's voice shifted, playful but husky, dangerous in that way only he could pull off.

"Hey… Yumi…" he said lowly, brushing his lips against Yumi's cheek. "Can you make your chest and hips… even bigger?"

Yumi's entire face went red. "W-What?!"

"You heard me." Shinji chuckled as he nipped gently at his neck. "You can shapeshift, right? So why not go all out? Just for me."

"I–you–! You're impossible!" Yumi stammered, squirming under him. "I'm already–!"

"But I want more," Shinji whispered with a wicked grin, licking the shell of his ear. "You… with huge breasts… wide, perfect hips… a body that makes me go insane the moment I lay eyes on you."

Yumi gritted his teeth, but the way he trembled betrayed him. He let out an exasperated breath, then muttered, "…Pervert."

Shinji just laughed softly and gave his tail another firm squeeze, stealing another moan from Yumi's throat.

"Come on," Shinji whispered, "show me just how much of a fantasy you can become… for me."

Shinji's grin widened against Yumi's skin, his fingers never leaving that trembling, sensitive tail as he whispered, "Alright, if not the catgirl forever… how about something else?"

Yumi gave a wary side-eye, still blushing, his chest rising and falling with every shaky breath. "Shinji… what now?"

Shinji chuckled low and dark, brushing his lips along Yumi's jaw. "How about… an elf?"

Yumi blinked, caught off guard. "An elf?"

"Mhm," Shinji nodded, voice dripping with mischief. "Long ears… silky silver hair… graceful and elegant… but with fat assets. I mean huge. Bigger than what you're wearing now." His hand slowly moved to Yumi's shapeshifted hips and gave them a greedy squeeze. "Think you can manage?"

Yumi groaned, half from embarrassment and half from how effortlessly Shinji pushed his buttons. "You're seriously hopeless."

"But you love it," Shinji replied, teasing one of Yumi's cat ears again before flicking it. "You love seeing me go crazy over you."

Yumi covered his face with one hand, hiding the growing heat in his cheeks. "You're such a degenerate…"

"And you're perfect." Shinji's tone dropped into something almost reverent as he kissed down his neck. "Now… elf. Tall, curvy, and mine."

Yumi sighed heavily, but the warm flutter in his chest betrayed how much he liked the attention—how much he loved Shinji. With a shimmer of his body shifting and reshaping, his ears lengthened into elegant points, his hair flowing longer and silkier like starlight. His figure swelled—his chest pushing outward and hips growing wider under Shinji's eager hands.

When the transformation settled, Shinji pulled back just enough to look.

"…Holy shit."

Yumi couldn't even look him in the eyes. "You happy now?"

Shinji leaned in, voice husky. "More than you'll ever know."

---

Shinji leaned closer, his breath brushing against Yumi's pointed elf ear, watching it twitch slightly from the sensation. A low chuckle escaped him as he nuzzled into the side of Yumi's neck, his fingers gliding slowly down the smooth curve of Yumi's waist, settling at the swell of his hips.

"You're dangerously good at this," Shinji murmured, voice warm and teasing. "And you still haven't explained why you never used this incredible ability to drive me mad before."

Yumi shifted beneath him, biting down on his lip as Shinji's hands kneaded into his plush hips—bigger now, softer, shapeshifted perfectly into something out of a dream. His breath hitched, his body trembling slightly from how overly sensitive everything felt in this new form.

"I didn't think you were that kind of pervert," Yumi said, trying to sound annoyed, but his voice cracked halfway through from the pressure of Shinji's fingers grazing his side.

"Oh, Yumi," Shinji said with a smirk, sliding his hand upward to the curve of Yumi's chest, now fuller, heavier, resting against him. "I am that kind of pervert. But only for you."

Yumi whimpered softly, his cheeks burning with warmth as Shinji's hand moved with slow purpose, cupping and squeezing gently—just enough to make him arch slightly and stifle a moan. His fingers curled into the sheets, his legs tensing around Shinji's waist as the heat surged through him again.

"Ah—Shin…! W-wait…!"

Shinji laughed quietly, amused by how sensitive Yumi had become. "You're seriously telling me you've had this power all along and just kept it hidden?"

"I-It's embarrassing…!" Yumi admitted, voice high, eyes fluttering as his body quivered under Shinji's touch. "It makes me feel… weird when you play with it like that…"

Shinji leaned down, his lips brushing along the edge of one soft elf ear, earning another shiver. "Weird?" he whispered. "You mean amazing."

He nibbled lightly at the tip of Yumi's ear, grinning when the smaller boy let out a shaky breath. His hands, now resting around Yumi's lower back, slid down to his hips again. Shinji squeezed, slowly, possessively, drawing a sweet sound from Yumi's throat.

"You were made for me," Shinji whispered. "And you're mine. Every shift, every curve, every sound you make—it's all mine."

Yumi nodded, dazed, heart pounding, his smaller hands fisting into Shinji's shoulders. "Y-Yeah… I'm yours…"