Relaxation's Lust

Author's Note: Hello, again! It's been a little while since I posted an Edens Zero fanfic. I know I haven't really put out a lot of fanfics, this year—given that I've been busy IRL, with work, and everything else. However, with Shicca Day on the horizon, I actually wanted to make another story featuring Shiki and Rebecca (and, only them!). The idea for the story you're about to read below, is based more from a NSFW Shicca comic I saw on Twitter, a few months back, recently made by a collaboration of four users (who will be mentioned in the end notes). You'll find some familiar parts in the story, if you've read that comic first! Anyway, with all that being mentioned, I hope you'll enjoy this oneshot!

NSFW ADVISORY: The following story contains graphic sexual descriptions, and strong language. Reader's discretion is strongly advised!


Slow, gentle footsteps echoed quietly throughout the halls of the Edens Zero, as a young, ash-blonde female—with her hair tied back in a ponytail, sighed wearily.

"Ohh, God!" Rebecca huffed out, resting her hand onto her neck. "I'm dead tired! I can't feel my legs anymore!"

In her dark tank top, and thigh-high shorts of the same colour, the ash-blonde could feel her trembling body giving way, at any moment. Slowing to an eventual stop, she released a low, protracted yawn, while stretching her right arm, holding it upright with her other.

As she did, Rebecca reflected back recently, to what had gotten her in such the shape of her life. 'Training with Witch is really a challenge I'm having!'

To say nothing of how torturous, and intense, her training sessions were, was quite the understatement, in her mind.

A look of dread began forming on her face, having imagined what more new training sessions the Shield of Edens had planned for her. 'She's gonna kill me, someday!'

Getting herself moving, again, Rebecca finally made her way to the corridor, where her room was.

The doors automatically slid open with a hiss, as the ash-blonde entered past them. Releasing another prolonged yawn, Rebecca undid the scrunchie binding the back of her hair, pulling her long, wavy strands free and loose to her waist.

Approaching her desk, the young B-Cuber settled onto her chair, before powering on the monitor to her computer.

"Well," she breathed out, going through her online account. "Let's see what they wrote under the last video…"

While she went through the many, various comments for her most recent video of her escapades, a pair of knocks sounded from the other side of her doors. The doors eventually slid open to allow inside, a raven-haired male around the same age as her.

His voice that greeted her was unmistakable to the ash-blonde female. "Hiya, Ducky!"

With her eyes focused on the screen in front of her, Rebecca could only muster a half-hearted response. "Hey…"

Clad only in his black, crew-neck tank top and white boxer shorts, Shiki noticed that something about her was…off. There was growing concern on his face, his lips parted open in a slight frown. "Rebecca…"

Not before long, the Gravity Ether Gear user had conjured up an idea that made him giggle quietly, while he slowly tiptoed towards the ash-blonde from behind.

"Kyaaah!" Rebecca yelped loudly, as she felt his hands suddenly plant onto her shoulders that nearly made her jump off her seat.

Shiki chuckled playfully, his smile widening. "Hey," he began, whilst massaging his hands against her shoulders. "Don't you even say 'hello' to me, anymore?"

Rebecca sighed deeply, relaxing against her chair, as well as leaning her face against his closest hand. "Ah…you know you're not funny, right?"

Shiki wordlessly responded by wrapping an arm around her, before leaning in to press his lips against her cheek. Letting out a short, high-pitched giggle at the warmth of his lips, Rebecca returned his kiss, with a chaste one of her own.

Returning back to her seat, the ash-blonde female allowed her raven-haired companion to massage her shoulders.

"Rebecca." Shiki pressed his fingers gently against the bare skin of her shoulder areas. "You've been putting too much stress on yourself, in the last few days," he emphasized. "Don't you want to relax for a few minutes, at least?"

"A-ah…." Relieved sighs escaped the ash-blonde, as she could feel the muscles of her body relax, from the shoulders down. His touch was gentle and soothing to her senses. It felt as if his gravity was taking away those sores, aches, and pains, right away.

Shiki raised a curved eyebrow, when he also heard her comforted sighs, as well as airy moans. Before he could even ask, however, there was a deep, slight chuckle from the ash-blonde in front of him.

"You're a real demon, you know that?"

Blinking for a second, Shiki slowed the presses of his fingers against her shoulders. He leaned closely against her, with a cheeky grin. "But, you know my proposal is good, huh?"

Rebecca chuckled again, feeling his arms now wrap around her, as she held his large hand. The next thing she knew, she was off her chair, on her feet, her body turned around to face him from her left. Her arms holding him closely from around his left arm, both of their faces were a close couple of inches away from one other, feeling each other's breaths.

'Well…you're right about it, too.'

Holding close behind her, with his hand on her upper-arm, Shiki leaned in to press his lips against her cheek. Rebecca hummed happily at his kiss—only to release a small gasp, when she felt his lips move below, and brush against the side of her neck. While he did, the raven-haired male grasped the strap of her tank-top, slowly shifting it down her shoulder, revealing the thin strap of her bra underneath it.

With a playful giggle, Rebecca turned around, and brought her hands onto his shoulders. Guiding her body with his hands on her sides, Shiki lifted her up onto the desk that allowed enough room to have her seated onto the edge of it.

With his hands on either side of her, on the desk, Shiki leaned in towards her, with lips that curved into a bold smile. Rebecca leaned in a bit forward towards him, simpering back at him unabashedly. Taking it as a signal to go ahead, the raven-haired Granbell swiftly moved in to press his lips against hers.

The ash-blonde wrapped her legs around his hips firmly, as she slanted her lips up onto his. While they shared into each other's fierce lip-lock, Rebecca began lifting his black tank-top higher with her fingers, uncovering his bare, sculpted abdomen. She moaned softly into their kiss, as she wrapped her arms around his head, when she felt a certain hardness poke right up against her lower abdomen.

A muffled groan escaped Shiki, when he felt her tongue sneak into his mouth, clashing against his. In response, he swirled his tongue around hers, before pushing it into her oral cavern, earning him another soft moan from her. While he did, he stealthily pulled down the other strap of her tank top, down her other shoulder, letting his lover free her arms loose from them.

Almost simultaneously, Rebecca pushed his tank top above his chest, with her hands all over his well-built torso. Shiki helped her with it, pulling it over his head, and tossing it behind him. Her own top followed, right away, as she slipped it over her head.

Leaning in to seize her lips again, the dark-haired male sneaked his hands down to her waist, hooking his fingers around the band of her shorts. The ash-blonde could feel him tug them part-way past her hips, before she helped him by shifting her legs around. They eventually slid past her feet, and out.

Pulling their faces away from each other to briefly catch their breaths, Rebecca rested her hands onto his shoulders, while her partly-lidded eyes met his. Her lips twisted to a bold, delighted smirk, as she gazed into his onyx irises that grew intense with lust.

Similarly, his mouth cracked open into a dirty grin, as he caught the passion aflame in her eyes.

It didn't take much for him to lean in further, and capture her lips, yet again. Her muffled moan was swallowed up in the kiss, while she leaned back a little more. With their tongues fought against one another, Shiki sneaked his free hand down to her most intimate area between her legs, rubbing his fingers against the soft fabric of her high-cut panties. It earned him a heightened moan from her, feeling her body quiver to his touch.

Reeling his lips outward from hers, he quickly pressed them against the pulse of her neck. It forced her head to tilt upward at an angle, and made her release a lilting gasp, while he made a deep kiss onto her skin. The ash-blonde then suddenly cried out, when she felt his fingers reach underneath her panties, and stroked against her clit.

"A-ah! Shiki!"

Said raven-haired male smiled naughtily, and held back a hum, having felt how wet she was. He then pushed a couple of his fingers inside her entrance, lightly pumping them back and forth, taking in her warmth. Rebecca's cries heightened, as she felt the intrusion his fingers made into her inner walls. Wrapping an arm around his neck, she firmly grasped the strands of hair on the back of his head.

"Y-yes!" She continued to gasp out her mewls. "T-that's it! Ahh!"

While she found his stimulating touches inside her to be quite pleasurable, they still left her wanting for more. It was a desire that never went away—only growing more, with every dip and stroke of his fingers.

Feeling his fingers retreat from her entrance, and then tugging her panties down her thighs, Rebecca took the opportunity to voice her desires to him.

"H-hey…Shiki?"

Her lover hummed back curiously, having managed to bring her briefs closer to her knees.

A sultry smile formed on her face, as she let her second-last piece of clothing fall loose to the floor. "Let's use the bed," she pleaded, teasingly, closing one eye. "Please…"

Before Shiki knew what she meant, he was taken aback when he suddenly felt her hand reach onto his shoulder. In the next instance, he found his back hitting the top of her mattress, forcing out a grunt from him. Feeling her quickly straddle his hips, the dark-haired male gently raised his head off her bed, looking up at the blonde.

With that same sultry smile, Rebecca had effortlessly unbuckled the clasp at the back of her loosened bra. She simply let it slip away from her, freeing her round, enormous mounds from it. His face burned with a reddish hue, as he caught the sights of her rosy-pink buds that hardened in the open air, while her breasts bobbled about.

The ash-blonde could barely contain the breath of her excitement, having taken the dominant position over her lover. It wasn't something she had experienced that often, before, but it felt rather exhilarating to be in such a position, every time the opportunity presented itself for her.

Lifting her gaze from his charcoal-dark eyes, all the way down to the lower regions of his body, her eyebrows raised at something else that brought her attention. She focused on the large bulge that was well-pressed against the fabric of his white boxer shorts. At the same time the blush across her face reddened more, her breathing slightly picked up, as she brought her hand towards the waistband of his boxers. Hooking her fingers around it, Rebecca tugged his boxers down his thighs—before her eyes widened at his fully-erect phallus that drew outward from its confines.

Standing tall at full-mast, the blonde was enthralled at how lengthy and muscular it was. Upon closer inspection, she could make out a mostly-transparent bead of fluid that seeped out from the tip of its head, just about to trickle down. The sight of it all made her sweep her tongue across her lips.

Shiki's breath hitched, having felt her fingers wrap around the base of his shaft, before running them up and down around it. Her touch forced him to raise his upper body enough, so that he could get a better look at her, propping himself up with his bent elbows in place.

Rebecca held back a delighted hum, feeling every twitch of his phallus, with every stroke of her hand onto it. She slowly raised her hips, just as she slowed the strokes of her hand to a halt. With one hand over his thigh behind her, she held his cock with the other, guiding its tip towards her entrance.

At once, she lowered her hips over his shaft. The blonde released a gasping cry, as she felt his shaft push through her entrance, and slid deeper into her love canal. Almost at the same time, Shiki grunted out a gasp, having been greeted by the wet, silk-like warmth of her inner walls around him.

Her head thrown back, Rebecca swore that she nearly came, as her upper-body collapsed forward—only being held in place, by her lover's arms around her, while he sat upright. With her hands on his shoulders, for support, the ash-blonde settled her irregular breaths, taking in the full hardness of his shaft filling her depths.

Shiki took in a sudden rush of air, when he felt her moist inner walls coil softly all over him, only to lowly breathe out a moan. Rebecca hummed delightfully, in response, before she began rolling her hips steadily against his.

Gasping moans escaped the two, as she gradually picked up the pace of her thrusts, bouncing over his lap. Both of them then leaned closely towards each other, sealing their lips against one another, yet again. Their tongues fought each other for the third time, already. It was short-lived, however, when Rebecca let out a muffled yelp, having felt the sudden, aggressive shift, his hips made against hers. Shiki could only laugh mischievously into the kiss, with his blonde lover returning it with a teasing mimicry of her own.

Rebecca continued grinding her hips against his, while they kept on with their fierce, passionate lip-lock. It didn't take long for her to realize that he had turned their bodies around, with both of them tumbling over. With another yelp, the blonde found herself dazed, on her hands and knees.

She turned her head behind her, an eyebrow raised. "Shiki…?"

A startled squeal escaped her gape, as Rebecca felt his phallus plunge into her depths from behind, while his hands firmly gripped the curves of her waist.

Shiki gruffly groaned and grunted, thrusting his hips heavily against her. "A-ah…ah, fuck!" Drops of sweat dripped down the sides of his face, as the dark-haired Granbell clenched his jaw lightly at the pleasure racing up his body. "Rebecca…you feel so good!"

"Mmmh, yes!" Said blonde pressed her upper torso against the mattress, while her fingers fisted the bed sheets, tightly. "So do you…Shiki!"

Releasing another low groan, the raven-haired male could sense that he was reaching closer to the peak of his pleasure, with the tingles in the base of his spine intensifying.

Her moans spilling out in between her breaths, Rebecca felt him gradually slow his thrusts against her. It forced her to raise her upper body, while she turned her head around to face him—only to meet his face, as he leaned in more. His lips slanted over hers, before the blonde returned back his kiss, with hers. Laughs and giggles were shared between the two, while he maintained the steady pace of his thrusts.

Rebecca cried out into their kiss, when she felt him roll their bodies around, once more. This time, she found herself underneath him, as he pulled away from her lips.

Her cries and moans heightened, upon her raven-haired lover picking the pace back up again. His hands were firmly onto her full thighs, while her sleek, shapely legs wrapped around his hips.

"Oh, yes! That's it!" Rebecca arched her back against the bed, writhing about, while her fingers firmly gripped the sheets underneath them. "More, Shiki! Yes!"

Shiki grunted deeply, having felt her inner walls contract more around him. His focus fell on her face that contorted with such ecstatic delight, before it continued down to her bouncing breasts that flopped up and down, with every intense thrust.

It was then that he felt the pressure building in the core of his body about to reach its limit. Leaning in onto her, with a groan, Shiki brought his arms around her upper back, while he plunged his hips deeper against hers.

"A-ah!" Resting his head over the crook of her neck, the dark-haired male intensified the pace of his thrusts, barely able to get his warning out through his gasps and moans. "R-Rebecca! I'm…almost…there…"

Her arms wound over the back of his neck, the ash-blonde could only respond with a few mewling cries of her own, while her legs slipped up over his hips. "Oh, yes!" She could also feel that ball of energy in her core about to burst. "I'm almost there, too!"

Shiki could merely contain himself, as he buckled his hips roughly against hers. "I'm…I'm gonna…." Clenching his jaw tightly, he continued on with his relentless pace, until a growl spilled from him. "Rebecca…I—I'm…!"

Squeals and moans emerged from the blonde underneath him, as she also felt herself on the cusp of her climax.

With a sharp snap of his hips, Shiki released a loud, primal groan, feeling the pressure in his body explode. "I'm cumming!"

A shortened, strained cry escaped Rebecca's gape, while she held onto him in a tight embrace. She could feel the burst of ecstatic heat overtake her body, and her senses, where it eventually pooled within her lower core.

Roughly at the same time, Shiki held onto her, his trembling body momentarily frozen in place. The extraordinarily-warm sensation of his climax overwhelmed him completely, as he could dimly feel the fluidic warmth escape the tip of his phallus, in short spurts.

The force of it was quite profound enough, however, for him to quickly release his hold around his lover, and lifting his upper-body off from her. Swiftly unsheathing from her snatch, whilst still in the midst of his climax, Shiki groaned gutturally, having sensed more of the same fluidic warmth erupting out in spurts.

Delighted, squeaking gasps left the blonde, as she felt the thick, warm fluid landing onto her skin.

With the waves of pleasure slowly subsiding, both lovers began catching their breaths, their chests heaving. Sitting on his knees, Shiki could barely muster any energy at all, for him to remain in that position, while nearly every muscle burned in his quivering, sweat-laden body. Huffing out rather heavily, the raven-haired male instantly dropped to the bed, beside his lover, with a soft thud.

Rebecca could barely recognize him falling onto the bed next to her, recovering from her own climax. Steadying out her breaths, the blonde slowly leaned upright, looking down at her own body. Her eyes grew wide at the blotches of iridescent-white fluid that gathered around her breasts, and her abdomen. Swiping her fingers against a small patch over her chest, she took them to her lips. She relished the bitter, yet salty, taste and scent of her lover's essence, having licked it off the tips of her fingers.

With that, her attention was turned to cleaning herself up. Perching over onto the edge of her bed, Rebecca retrieved a small cloth towel from the drawer of her nightstand. Wiping away the semen and sweat that stuck to her body, as well as around the area between her legs, the blonde dropped the used cloth into a nearby hamper.

Sighing quietly to herself, Rebecca focused her attention back on her dark-haired lover. Turning to her bed, the blonde was quite surprised to see that he had already fallen into a deep slumber. She blinked, watching him spread out onto the mattress, audibly snoring, while he slept peacefully.

'Oh, will you look at him!' With a rosy blush on her cheeks, Rebecca held back a teasing giggle, smiling sweetly. 'He wanted me to relax…but, in the end, he's the first one who's sleeping!'

Climbing onto the bed, the ash-blonde rested by his right, pulling the blanket over their bodies.

'Uhhm…but, it's actually so relaxing, and comfortable to be here with you.'

Cuddling him closely, Rebecca leaned her head against his shoulder, where she joined him in his peaceful slumber.

'And, besides…'

As she did, however, her hand moved over to his closest one. There was a bright smile across her face, having linked her fingers with his.

'I want to stay here…by your side…forever…'


(Optional bonus scene below!)

The ungodly screech of a young female pierced through the open halls of the ship.

"YOU'RE FREAKING KIDDING ME!"

Almost immediately, a loud, dull thud, of a person hitting the floor had followed.

A little more than a few weeks had passed, since that time they indulged into each other's 'relaxation'.

Inside Rebecca's room, said ash-blonde was in total shock, and horror, standing frozen in place. With a trembling hand over her mouth, she stared silently in abject terror, at the result displayed on the front of the pen-shaped testing stick held in her other, trembling hand.

Not far behind her, was the raven-haired Granbell himself, who was fully down on the floor. His face was filled with the same shock and trepidation that Rebecca had—albeit, with a much-wider gape hanging from his jaw, under his eyes that were the size of saucer plates. In his mind, he just simply couldn't comprehend the thought of becoming a young father, so soon.

Maybe, he thought, things would've been quite different, had they used protection beforehand.


Oh, I feel for the both of them…I really do! xD I mean, the story takes place, in a totally different, and separate timeline in canon. But, still…

Anyway, I want to give a great, big shout-out to Asia Bella, Aelita, Saere, and Shiro, for collaborating together, and making the comic—in which this fanfic is based off of! All of you have certainly earned my respect, as contributors to the Edens Zero fandom.

On a final note: Happy Shicca Day to all the fans of that ship!

Stay tuned for more!