Enslaved By My Ex-Boyfriend In An Isekai Hellscape

Xuelan had a dream.

It was a fuzzy dream, and she couldn't remember it very clearly.

Her knees were spread apart with black cords that were anchored to opposite sides of the mattress. Her arms were in some kind of armbinder-like restraint, and the rope dangling at the end was pulled up harshly and tied to the headboard of the bed. It was a basically a kneeling strappado, and the natural dynamics of her joints forced her upper chest down into the bed with her ass raised uncomfortably high in the air.

It was a stressful position, but it was impossible for her dream self to complain.

As usual, she was blindfolded and gagged. Her wailing moans were muffled as her assaulter pounded her from behind.

He was really quite ruthless, occasionally slapping her butt and yanking on her hair until she squealed and sputtered into foreign object that was trapped in her mouth.

His powerful thrusts were rough and never-ending... that insatiable incubus shot his seed into her multiple times... he never grew tired... and kept her pussy overflowing with cum... one ejaculation after the next... followed by the next...

It was impossible to know exactly how long he kept going... she thought she was going to die... 

Lost in timeless limbo... a hazy blur of disorienting lust and pleasure and pain...

+ + +

Xuelan woke up warm and in total bliss.

She was enveloped in the cozy embrace of her partner, which felt luxurious if mainly for the fact that snuggles were wonderful. It was absolutely heavenly to feel his body like a radiator, curled up around the curves of her body like a big spoon. They were underneath the blanket, which honestly was a bit threadbare and ragged, but Xuelan didn't care about the poor quality of the bedding.

The feeling of his hot skin against hers was amazing. She realized at this point that perhaps incubi really did have a warmer body temperature than humans, and maybe she wasn't imagining it when she thought his cock was burning up inside of her...

...Wait, cock?

Why was she thinking about cock?

Xuelan could only faintly recall the fact that she had dreamt about something pleasant, but like with many dreams, the details were rapidly slipping from her mind. She had never been the kind of person to remember her dreams very well, and she never paid much attention to them. After all, dreams were totally harmless. As a firm believer in modern technology, Xuelan was not superstitious, and she ordinarily considered things like astrology or dream divination to be total pseudo-science. Fixating on the dreamworld was a total waste of time.

In either case, the trivial subject matter only crossed her mind for an instant before Xuelan's attention was distracted by more pressing issues.

As the young woman slowly shifted in bed, she realized that she was tied up.

Ah... right, Xuelan had almost forgotten.

Before they had gone to bed, Kien had released the barbed rope from her arms. The girl had been very thankful for this, because it definitely would have hurt horribly if she was forced to keep it on all night.

However, the incubus did not let her off so easily.

He made her choose from a selection of different restraints to sleep with, and insisted that if she didn't pick one herself, then he would choose the cruelest one he could think of. Ultimately, Xuelan shyly picked the armbinder, even though she pretended to be unhappy with it.

Although it was something that she would never admit out loud, Xuelan practiced a lot self-bondage in college. It was common for her to tie her own hands together before going to bed, and she liked the relaxing feeling of being bound. As a closet masochist who had never practiced BDSM with a partner in real life, she incidentally had many years of self-bondage experience. In fact, she kept a box of toys hidden behind her stack of old textbooks, a majority of which she had accumulated over the years. She had a good feel for lots of different restraints, and she generally preferred softer and more comfortable ones that she could sleep in without killing her wrists. For instance, metal handcuffs were horrible and they chafed her skin. Armbinders were generally made of softer textiles, which seemed manageable. However, it was nigh impossible for a single person to put an armbinder on themselves, which meant that Xuelan had never actually worn one herself. Thus, her curiosity was also a component of why she made that particular choice.

Xuelan wiggled over to the side, sleepily testing the limits of the bonds and secretly enjoying how secure it felt.

The armbinder was made out of some kind of mysterious material that Xuelan couldn't quite place. It wasn't quite leather or latex, and the seamless shadowy black fabric was the same color as her collar. The material was incredibly strong, but also snug, comfortable, unobtrusive, and perfectly sized for her body proportions. In fact, a majority of toys Kien that used on her were made of the same versatile shadowy material, which made her wonder if they were somehow magical constructs that were an inherent feature of her 'slave' class.

On Earth, BDSM gear could get quite expensive. Kien kept pulling new toys and restraints out of thin air, and it was unlikely that he could actually afford buying such an extensive collection. Xuelan's best guess was that manipulating the shadows into lewd shapes was a special kind of a skill, although she couldn't help but wonder if there were other practical uses.

Like, if you could make a dildo, did that mean you could make a sword?

How strong was it actually? If they could form unbreakable chains, could it be reshaped into armor?

Xuelan wanted to test a lot of things...

Although, it was a bit annoying that the incubus was too much of a pervert. He seemed to turn everything that she wanted into a sex game, which was already getting tiresome even though she had only dealt it for one day. Xuelan started to feel a headache coming thinking about another whole day of bickering with her ex-boyfriend... 

+ + +

Kien was awoken by Xuelan's weak struggling in the armbinder.

He was practically glowing, and he seemed to be in a weirdly good mood.

"Good morning Xue! I hope you slept well."

The incubus immediately rolled over towards her and hugged her tightly in the midsection, incidentally groping her breasts along the way  'by accident'.

She frowned at him.

"...You're way too happy for it to be morning, Kien..."

"I'm just so happy to finally have you in my arms. After all these years online, we're finally together in person."

"...I need a coffee..."

"Unfortunately, there's no coffee in Hell. Oh, but morning sex is a great substitute. It's a stimulant."

Xuelan groaned and wanted to kill herself.

Someone needed to gag this incubus to shut him up. His jokes were terrible, and she was starting to doubt whether it was actually possible to live with this guy for the rest of eternity. Out of all people to be enslaved to, why couldn't she end up with someone better than this idiot?

She struggled to escape from Kien's arms and pushed herself up onto her knees.

But then she felt something sticky trickling down her thigh.

...Huh?

It was... semen?

But... she had no memory of this?

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