This is gonna be longer with 2k+ words, bear with me!

"w-what?" Lucy stuttered, eyes widening at the words Natsu spoke.

Natsu didn't respond, turning and opening one of the three doors in the room, leaving Lucy in the spot he stood. Her eyes following the naked demon, momentarily captivated by the way the muscles on his back flex with each step

Once snapped out of her thoughts, Lucy followed carefully stepping into the door where the demon was occupying. The bathroom was decorated like the room, wall were uneven with dark stone and grey floors. The toilet, sink, bath, shower were all black and made well, the space looking expensive

Natsu stood over the bath, fiddling with he knobs on the bath before water rushed in. Lucy stood with her arms covering her chest, shying away from the demon's eyes. It was one thing to be completely bare before someone sexually but different when they weren't doing anything. The room heated up quickly, the steam fogging the mirror and blocking lucy's view

"Come here, Lucy" Natsu's voice knocked him from her thoughts, her eyes tearing away to land back on the demon who dipped his hand in the clear water. Lucy followed the order, standing behind Natsu with her arms still crossed as he tested the waters

"Get in"

Lucy took a step closer to the tub, dipping her toe in before anything else. It was unbelievably hot. So hot that her toe retracted immediately and shriek escaped. Natsu's hand quickly found lucy's bare hip to help her balance

"Is it too hot?" Natsu asked, moving forward to drain some water and add cool water before Lucy stopped him. He wasn't in the mood for standing around and waiting for the bath to refill, his bottom so uncomfortable he could barely stand.

so, she dipped the rest of her foot into the hot water, followed by her leg then his other, till she was sitting in the shallow water. It wasn't bad as it was once she got used to it, even relaxing. typically Lucy hated hot showers and baths but she figured she'd have to give it another shot if it felt this great

Natsu crouched down at the end of the bath, watching as Lucy relaxed into the large oval tub, the air was so quiet and stiff. Lucy hated it, so he did something he knew she'd find herself regretting

"W-Why didn't you answer?"

Natsu's burnt orange eyes flashed up to Lucy's much more dull brown ones. Her lips parted and clearly surprised with the sudden and direct question.

"I had a lot going on, a lot on my mind" He answered simply, his face returning to the expressionless face he typically wore, eyes everywhere beside's Lucy. she didn't like the bland answer, he wanted more and to hear more of why he did what he did and why his brother would be so concerned

"What have you been doing?" Lucy asked genuinely curious. He wanted to know more, he wanted answers so badly

Natsu sisghed, before looking into the mortal's eyes, "Lucy, i'm Lust. I fuck everyday all day constantly. It kills me not too, i see many souls a day and i've been doing it since my creation. All i've been made for" He paused, standing from the crouched position by the bathub. "That's what i've been doing recently and for all of eternity" his voice sounded tired and maybe even a little empty. But Lucy understood clearly

Natsu dipped his feet into the water first as he joined Lucy, his back hitting the end of the bath as he stared back to the mortal before him. She looked pure and innocent, perfectly smooth unmarked skin on full display above the water. Her hair flat against his forehead due to the sweat and water that collected

"Come here" Natsu ordered, pulling Lucy close as he pressed his chest to the smallers back. Lucy sat between his legs, stiff as she sat naked. It was off to be close to someone without having any sexual intentions. It was new for both of them. the silence unbelievably strong, the silence itself becoming loud because of how quiet it was

Lucy hated it, her voice breaking the silence first "As a human, i never thought that there would be houses and things in hell" dumb statement but that all she could think when she remembered she was in hell. Natsu leaned father back onto the tub, his eyes closing Lucy's body stayed up and too awkward to follow him

"There's no real houses here, my father built this palace when he arrived and the rest is history" Natsu's voice hummed from behind her, his voice almost echoing and vibrating off the surrounding of the bathroom

Natsu spoke up again before Lucy could, "Any other questions about hell?" he paused "One day you'll live here too"

Lucy shuttered at the thought, but responded "Well, is there a Mrs. Zeref?" Natsu cracked a smile, his eyes not opening but his hands reached out under the waters for Lucy's thin sides. they were soft and he liked placing his hands there.

"nope, there isn't one but its a rather interesting story so i'll tell you later" Natsu responded, lucy only nodded, her fingers twiddling under the hot water. Her bottom still ached from his punishment, a blush coming to her cheeks as she thought of the activites that had just taken place and the way Natsu came on his lips

"How were you created then, if your dad had no-?" Lucy asked confused Natsu's hands still ran up and down the length of his sides, comforting and making slowly relax and ease into his touch

"He spoke us into existence, a long process and the spell super long. Each one of us sins were made one by one carefully" He answered, unbothered by the curious blond's questions

Lucy hummer, taking in all the information about hell that Natsu gave it interested her how this was the afterlife, and she was living in it. That she'd here with Natsu even after she finally passes, slaving away for all of eternity in the dirtiest ways

"How many souls do you have on earth? Do you visit often?" This question was different from the others or at least Natsu reacted. This time his legs around lucy stiffened, his hands on his sides freezing to one spot. Even the hot water around them couldn't defrost them. She turned around to stare at the beautiful demon, his eyes casted downward and his lips parted

"Why didn't you answer my summon? Were you with other souls better than me?" she wasn't sure where the question came from, she didn't plan on asking anymore questions about his recent whereabouts. Lucy wasn't even sure why he asked and mentioned other better souls. He wasn't jealous, he never even thought of it that way.

Natsu's eyes finally flickered up and locked with lucy's, his previously frozen hands finally moving. They twisted the petite figure so she faced the demon, eyes never breaking the stare they shared

"Are you jealous?" he asked not realizing he was hoping for Lucy to physically react to the question but she didn't her face remained expressionless as she shook her head. Natsu reached under Lucy's arms, wrapping her waist before pulling him closer. Lucy sat between Natsu's thighs, knees pressing to his inner thighs and faces inches apart.

"Im just one of your souls" she finally spoke up as he stared down at Natsu's perfectly pink, sinful lips. Natsu nodded once quickly, his adam's apple rising and falling as he swallowed loudly. He pulled the smaller in, letting Lucy's head lean against his chest as the water enveloped them

It was comfortable for both of them, they could've fallen asleep there cuddled together if they had the chance but Natsu's eyes fly open, his body jolted.

Lucy looked up, chin still touching his chest"What? What's going on?"

Natsu quickly responded as she looked down, the once hot water was now comfortable for Lucy "My dad, he wants to see me right this instance...he summons me. you can stay here in my room or go back to earth...which would you like?"

Natsu hated to admit that his heart fell when she answered "Earth, home...please" but he followed her wishes and quickly stoof rom the water, which was far too cool for Natsu's liking. he grabbed nearby towels before handing one to the mortal hoping out to rummage in his toiletries.

.

.

.

The next two days were nothing less than amazing. Lucy's mother making a fast andd miraculous recovery she was even able to walk and was smiling more than normal. Lucy was happy, thankful. Her mother's gleaming smile was all she could wish for, all he did wish for. Thoughts of Natsu flooded his mind occasionally, the special one when she was back in her room with a tube of ointment in hand 'for you, see you in two days' she heard his voice in mind

The smile couldn't be wiped from her lips, eyes sparkling constantly. It was the second day, a extra spring in her step and was smiling more than was happy, thankful and a flower bouquet in her arms, it was from the doctors where his mother stayed, congratulating her mother for her recovery

She unlocked the front door, small giggles coming from the back of her throat as she thought about his success at saving her dear mother, staring down at the bouquet as she made her way to the kitchen. She unwrapped the paper, filled the vase as a shiver ran down. Every hair on his body stood at the end, her smile falling slowly at the chilling feeling

She didn't feel alone

"why lose the priceless smile, hm?"

The voice brought back the warmth to her body, that was lost from the chill, her body visibly relaxing as she recognized the voice behind her, She quickly shut off the nozzle of the water, moving the vase to the flat surface before turning to face Natsu.

He stood no more than 4 feet away from Lucy, topless as always. His skin gleamed a healthy glow that he didn't seem to have the last time she had seem him, his lips were bright pink drawing her eyes

"What's with the face? aren't you happy?"

Lucy quickly smiled, remembering the exciting day she'd had. He nodded, eyes never leaving Natsu, they traveled from his black eyes to his caramel skin, the smooth abs, defined arms and sharp legs.

Natsu smirked, knew no doubt that the mortal was looking at his body, "You're welcome. I focused on her recovery yesterday. So i assume she made progess" the corners of her lips fell slowly but surely a she though of the things she was told by her mother's doctor just a few hours prior.

'we have to keep her tumor under control, process with treatments and try to ease her back into normal life. we almost lost her too many times, including yesterday and we can't get that close again'

Lucy closes her eyes, as she thinks over it, Natsu speaking up "What's wrong? what happened?" her eyes flickered up the demon, his eyes glowing a beautiful rust color as the setting sun shined into the kitchen window

"Last night was rough on mother, something happened but she's doing great" she spoke up a sigh escaping after she finished. Natsu's eyes brows nearly met in the middle as he frowned taking a step towards the blond

he wanted to comfor her, hug her but wasn't sure how. He knew it wouldn't be appropriate to do that, so Natsu did the one thing he knew how to do and how to do it well

Lucy's eyes widened when natsu fell to his knees in front of him, her jaw falling slowly when natsu's pink lips parted and his tongue rolled out

"w-What are y-you doing?" she askded hushed and rushed, panic clear in her voice. She wasn't expecting natsu to drop, not here and not now

"what does it look like? i'm giving you a change to fuck you masters face, you won't get this opportunity often, if ever again, get on with it" natsu spit back, venom laced in his voice but he sill opened his mouth wide after "Hope this makes you happy..." he mumbled

Lucy stood frozen on spot, hands hovering over her wasitband as she thought about it and if she wanted to do that. Her hands slowly reached for the button on her pants, still processing the situation as she kept her eyes on the beautiful demon who kneeled before her

"Lucy if you don't-" Natsu hurried her, becoming impatient with the blushing mortal, his own hands reaching and motioning to pull her pants down, hands on the back of her thigh to usher her closer "-hurry, i can't believe im doing this shit"

Lucy nodded as the demon positioned her and ushered her hands to the back of her own waistband and pushing the underwear down to reveal her slick dripping heat, it was easy fro natsu to do his work. Infact, it caused Natsu to crack the smallest of smirks staring forward to lucy's lower lips before licking, his hot tongue feeling the pussy as whole. Lucy's hips immediately rolled forward, a hand resting to land on natsu;s bare shoulder to balance herself a moans slipping out

Natsu's wet muscle takes long drags on her folds, fingers pushing past them to enter her warm craven, he bit her clit occasionally waiting for the mortal to start rocking her hips and fuckhis mouth but nothing followed.

his hands that rested on the back of Lucy's bare thighs rose, fingertips just below her bottom, His strong hands pushed her hips forward while he worked his tongue sucking and biting hearing the moans aloud, letting the demon pull and push her hips and fuck his own mouth.

After a few minutes, they built a rhythm to which Lucy became far too needy, her hips rocked with it that Natsu pushed and pattern keeping up even after Natsu's hands fell back to his bottom of his thighs, letting Lucy do it herself, pleasuring. the sounds were what he assumed heaven would feel like, his eyes flickering up to watch the way the mortal's eyes rolled back, arm flexed as he held Natsu's shouler

When Lucy opened her eyes, they immediately flickered down to natsu's stood on his knees with his tongue following his fingers in pumping in and out of her, the sight alone pulled her closer to her orgasm, moans becoming high pitched as he fucked her

Natsu groaned as her juices ran down his throat, slurping away nonethless. His hands rose and spanked the girl on her ass as she reached the end of her high

"I didn't give you permission to come in my mouth. you'll get punished next time" and boy did lucy feel butterflied in the pit of ecstasy stomach, as he stood wiping the ends of his lips carefully standing up. His knees ached, the leather of his pants sticking for a moment to his knee caps. He sighed, deciding to never do that again

Lucy bowed her head, shaking hands working o hiding her private into her underwear, quickly pulling her pants back into position. She truly didn't mean to cum, but it was too much. she never felt anything like that before.

"S-sorry, Natsu..i d-didn't mea-" Lucy couldn't finish he end of her sentence, a hand was wraped around her throat and her body was shoved against the refrigerator. The metal cool on her back, sending a shiver down her spine as she stared up with wide eyes at the demon before her

Natsu spoke, teeth gritted "I told you to call me sir, master or daddy. Never my name unless you're summoning me. Don't break the rules, you're not an exception Lucy" she pushed out a whine, from the back of her throat wishing to say okay and be obedient to him but the restriction airflow didnt allow it

her hands wrapping around her own throat, as he thought about the burning pain she was in. Natsu watched, eyes lowered and dark, a sigh pushing out his lips as he attempted to relax, taking one last look at the mortal before disappearing into thin air

Lucy sighed, relieved. finally peace and quiet.