Prompt: Helping a Friend Ch. 11 (Fairy Tail) (Patreon)

Summary: Lucy transforms into Juvia and gives Natsu a fun night, but in the end, she's the one screaming in pleasure after Natsu reveals his own little secret. Includes: Transformation, and Imaginary NTR

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Natsu couldn’t believe his eyes. His jaw hung open as his eyes went up and down Lucy’s body. He couldn’t believe it. Lucy had transformed before his eyes, her body shifting in proportions slightly as her eyes changed shaped, and her blonde locks were darkened into a deep shade of blue. 

In a matter of seconds, Lucy was the spitting image of Juvia, Gray’s girlfriend. She smiled at him, and even when she spoke, her voice was a perfect match for Juvia’s voice. “This potion lets me copy any girl’s appearance. I can’t do what they do, but their voices, their looks, all of that, I can copy with the power of this potion.” 

She placed the potion aside as she stood before Natsu as naked as the day she was born. “What… What do you think?” she inquired, a scarlet blush consuming her face and neck. 

Natsu said nothing as he approached her, and ‘Juvia’s’ face only got redder as he came closer and closer. Her pale face was consumed by her shame and embarrassment as her lips parted to repeat her question, only for his lips to catch hers.

The two kissed, and Lucy was swept away as her boyfriend’s lips began to play with hers. Lucy felt her legs wobble under her own weight as she tried to make sense of the sensation playing in her heart. She tried to steady herself, even as confusion and excitement fill her heart and spill throughout her Juvia-shaped body. 

Part of her wanted to know why her boyfriend did not even seem to question the whole idea, but she decided to bring it up later. It was getting harder to think about anything, other than the feeling of their bodies pressed together. Her breasts pushed against his chest, and her hands wrapped around his neck as she stood on the tips of her toes to better kiss him.

Her lips opened and his tongue pushed into her mouth, licking her tongue as she moaned into his mouth. The two continued to kiss, tongues wrestling as their bodies were slowly carried away by the pleasure. They moaned as Juvia’s hard nipples rubbed against Natsu’s skin, and he finally forced her back, ending the kiss.

Juvia panted with her mouth open and her tongue hanging out as she looked at Natsu for more. He grinned a crooked, amused smile as he replied. “Are you ready for me, Juvia?”

Lucy knew who she looked like. She knew what she was doing. She had planned all of this for so long, to finally have it in her grasp was beyond amazing, yet it was this that made her heart skip a beat.

“W-what?” 

When Lucy heard her boyfriend call out her friend’s name, another girl’s name, she moaned in pleasure. She nodded her head in approval as she felt a jolt of pleasure running up her spine. She smiled at the sensation, taking in a deep, adoring breath as she began to let him.

When Natsu called her by another name, Lucy’s fate was sealed. His whisper sent a moan of pleasure out of her mouth, before her eyes widened. She didn’t expect hearing her boyfriend say another girl’s name would get such a reaction out of her, yet here she was, panting as his arms traveled up and down her body.

They kissed again, slowly moving to the bed as lust bubbled in Lucy’s body like lava rising within a volcano. She felt ready to burst as they fell onto the bed, and Natsu began to tease her body. 

His hands roamed over her body, before stopping on her breasts. ‘Juvia’ gasped, breaking the kiss to stare at his hands groping and squeezing her chest. He smiled at her, before his fingers pinched her nipples, rolling them between his digits.

She moaned loudly, biting her lower lip to keep her voice down as his thumbs pressed into her nipples. He felt them harden under his touch, before his hands went down her body to stroke her hips. One hand returned to her chest to play with her breasts as his other hand slipped between her legs to stroke and rub against her clit.

“Ahh!” Juvia smiled, resting her head on Natsu’s shoulder as his finger traced the entrance to her pussy. 

“Having fun, Juvia?” 

“Natsu, you’re so amazing...” She was feeding his ego, and he loved it, grinning with his sharp teeth as he began to nibble and kiss her neck.

“Damn right, Juvia. Keep talking.”

“Ahh, Lucy doesn’t deserve someone as wonderful as you!”

There was something so damn hot about Natsu saying Juvia’s name. Something that just made Lucy’s pussy quiver, and her heart race. Her imagination ran wild as she looked at the scene from an outside perspective. 

Natsu cheating on her… Juvia riding on his cock. Pounding her pussy as she moans and screams as Lucy rides Gray’s dick. Both women moaning as they kiss another man. 

Lucy could see the sweat dripping from Juvia’s body, her tongue dancing with Natsu’s, her pussy wrapped tight around her man’s shaft…

Her imagination was the finishing blow as Lucy moaned, cumming from Natsu’s fingers pushing in and out of her pussy. The wet sounds and the wonderful sensation, mixed with the fantasy of Natsu fucking Juvia, sent Lucy over the edge. She came as Natsu whispered in her ears.

“You’ve got a sweet voice, Juvia. I like hearing you moan.” He kissed her ear, before giving it a lick. “But now I want you to scream.”

When did her boyfriend get so good at dirty talk…?

He pushed her off the bed and onto her knees. She obeyed without any hesitation, and when his cock moved in front of her, she opened her mouth and welcomed it onto her tongue. Juvia bobbed her head back and forth, moaning as she tasted the cock against her tongue. 

It slid back and forth, pressing against the back of her throat as she closed her eyes and moaned. 

“Mmm. Juvia, you’re so good,” he grinned, stroking her head with an eager grin. He patted her head, and Juvia pulled the cock out of her mouth. It glistened with her saliva as he took her into his arms. 

Natsu bent her over the bed, bringing one leg to his shoulder as he began to fuck her. His cock pushed into her, pushing her pussy walls apart as his dick plunged into her. She moaned in response, smiling as he began to buck back and forth. 

“Am I better than Gray, Juvia?”

Juvia moaned as her face was pushed along the bed sheets. Natsu’s balls smacked against her body as he fucked her faster, his dick sliding along the walls of her womanhood.

The blue-haired beauty closed her eyes and cried out, cumming on the pink-haired man’s cock. Her moans were answer enough for the young man as he grinned and kept on the pressure. He moved faster, making her body jiggle and shake from the force of his blows. 

The force of her orgasm made her body tremble as Natsu moved her body. She gasped as he lifted her right off of the bed, holding her with his hands on her tits. He walked her around the room, with her body still impaled on the veiny shaft as he marched towards a naked wall.

Juvia was shocked by his strength, before he slammed her against the wall and slid his cock out of her pussy. She panted, staring at Natsu with awe in her eyes as he smiled down at her like a predator would look at their prey. 

Her pussy dripped her juices onto the floor as he smiled at her. Juvia’s tits pressed against his chest as he adjusted his body, and slammed his cock into her asshole, spreading her tight ass cheeks apart.

“Ahhh!” Her cheek pressed against the wall as he fucked her ass. 

Natsu grinned and began to fuck her butt faster and harder, pounding her into the wall, slamming Juvia against it as her eyes almost rolled into her head. Her hands clawed at the wall as she panted, trying to keep her voice down as Natsu repeated himself.

“Am. I. Better than. Gray?” He gave her ass a squeeze, before he began to spank her ass as her face pressed against the wall. “Well, Juvia?” He was clearly enjoying this, no doubt living out his own fantasy as Juvia mewled, answering him with moans and whimpers. 

His dick continued to push into her, making her bounce on his cock as she moaned. His balls smacked against her body as he repeated himself once more. “Am I better than Gray?”

“Y-yaaah!” Lucy couldn’t get ‘Juvia’ to answer. Her boyfriend’s rapid pace and throbbing cock were too much for him. She wasn’t sure he had ever fucked her this hard before, and that just turned her on more.

To imagine him showing this wild side to Juvia, not her… Her pussy juices dripped onto the floor as her arms wrapped around his neck, trying to match his pace.  

He kept fucking her for a few more minutes. By now he had her turned around, back pressed against the wall as he kissed her. Their lips mashed together before his tongue entered her mouth, swirling inside, tasting every inch of her mouth as his hands played with her tits. He showed no mercy to Juvia’s rack, smacking them around and pinching her nipples, before twisting them in his fingers.

Juvia moaned into his mouth as his hands mauled her tits, playing with them like dough. Juvia could feel pleasure rising in her body, nearing an explosive climax as she wrapped her arms and legs around his body. 

Lucy’s imagination ran rampant again. She imagined herself walking in on the two, watching them fucking in her house, by her bed. Their juices staining her things and property. It was so cruel, so mean, so… hot. 

She knew if she ever saw them fucking, she wouldn’t stop them. She wasn’t even sure if they would notice her. Juvia would no doubt be too high on the pleasure of being fucked by Natsu’s cock to notice her, but her own boyfriend?

He’d look at her. He’d know she was there, and he wouldn’t stop. He’d stare right into Lucy’s eyes as her nipples hardened and her wet pussy quivered. Lucy would cum just from watching them as Natsu came inside of Juvia, filling her ass with his seed. 

His cock pistoned in and out of her ass when they broke their kiss. They stared into each other’s eyes as Juvia felt her orgasm coming closer and closer. Natsu leaned forward, kissing her neck, sucking on her pale flesh to leave a scarlet mark there. 

Right before Juvia was about to cum, Natsu hissed into her ear. His breath was so hot against her already warm skin, she almost thought he was using his fire breath on her. 

What he said made her heart skip a beat, before she came to a screaming finish.

“I know what you did.” She saw his smile with wide, shocked eyes, before her muscles began to spasm and her entire body began to quiver and tremble. She gasped for air, shaking as her orgasm rocked through her body. 

At the same time, Natsu came, filling her ass with his seed. He coated the walls with her sperm to the point that it leaked out of her asshole, and dripped to the ground. 

It was one of the best orgasms in her life. Better than Gray, than Elfman, just… just amazing. Juvia couldn’t see straight as a large smile formed on her face. She trembled, before her body went limp, and her limbs fell towards the ground. Natsu and the wall sandwiched, holding her just off the ground as he smiled at her.

She gasped for air, trying to look at him. Her vision was blurry as she blinked, opening her mouth, only to close it again. She could hear heart racing as he let her go, pulling out of her and watching her slide to the ground.

Juvia, or rather, Lucy looked up at him with glazed over eyes. “H-how…?” she whimpered. 

He chuckled, tapping on his nose. “I got a great smell, you know that. Ever since I got back, I could smell the other guys’ scent on you.”

Lucy’s eyes widened again, but before she could ask any further question, Natsu spoke first. “So, want to go again? I still got a few more rounds in me,” he chuckled. He smirked at her as Juvia’s jaw dropped. Lucy couldn’t believe it as her mouth opened and closed like a fish. 

She gulped, wondering just what was going to happen to her now. She smiled, a tremble of excitement hitting her legs as she wondered just what was in store for her next.