Tenebrous Wolf

Klaus slowly opened his eyes, staring at the familiar ceiling of his apartment. His entire body felt stiff, as if he had been asleep for far too long.

With a groan, he stretched his limbs, trying to shake off the discomfort, then reached for his smartphone to check the time.

[6:00 AM | July 23rd, 2125]

Six in the morning? Klaus frowned in confusion.

It was supposed to be around six or seven in the evening, so why was his phone showing 'AM'? Even stranger was the date, July 23rd? Wasn't the date supposed to be July 22nd. Had there been some kind of mistake?

Scratching his head, he let out a sigh and dropped his hand onto the bed.

Instead of the soft fabric of his bedsheets, his fingers pressed into something round and warm.

"...?!"

His body stiffened. Slowly, he lowered his gaze to see what he was touching, only to realize it wasn't a 'thing' at all.

It was someone.

A girl.

She had pale pink skin, like light peach, and long straight deep purple hair which had become messy. She was sleeping soundly with a bit of snot slipping from her nose. Face down on the bed, she looked utterly at peace.

And his hand was resting on her ass.

No, it was sinking into her ass.

Her buttocks, round and full, were so big that his hand barely covered a portion of her plump flesh.

More importantly, she was naked.

And so was he.

They were precariously close to the edge of the bed. Klaus sat upright while she lay on her stomach with her lower body extending beyond the mattress. It looked as though she was kneeling on the floor with her upper body resting on the bed, thrusting her rear into the air.

Then he noticed something else.

A thick, white fluid was oozing from between her thighs, trailing down in slow, glistening streams. The source came from her ass which seemed flooded with large amounts of that white stuff.

His mind went blank.

Klaus didn't freeze because a beautiful girl was lying on his bed, nor because her current state, his included, clearly suggested they had indulged in something wild prior.

He froze because of her pink bat wings, pink pointed ears, and unnaturally pale pink skin.

This wasn't some elaborate cosplay. It was real.

For a moment, his brain completely short-circuited, struggling to process the sight before him. Then, like a dam breaking, the memories of what happened came rushing back.

He had summoned a demoness.

And then, he had slept with her. To be specific, he had rammed her ass to submission.

The testament was his aching, spent body and the vivid red handprints branding her butt.

"Damn. I really went all out and my body is arching all over. What the hell happened? I'm really more restricted than this. Was I really that pent-up?"

Klaus rubbed the back of his head, unsure of what to do next.

His high sex drive had always been a problem, and after breaking up with his ex, his sexual frustration only grew. He had managed to keep it in check using various 'methods,' but the moment he saw a willing woman, and an opportunity, he completely lost himself.

As expected, succubi were truly terrifying creatures.

A wave of guilt settled in his chest. Sleeping with the first woman he came across, demoness or not, and leaving her in such a state felt wrong.

Irritated, he clicked his tongue and shoved the thought aside.

"We were way too loud, there's no way the neighbors didn't hear that. Hell, the whole building probably did."

His eyes swept over the room, taking in the chaos.

The sheets were a tangled mess, damp with moisture, and the air hung heavy with the lingering scent of sweat and desire.

This room just screamed, Two people just had sex here.

"...And now I have to figure out how to clean up this mess."

He sighed. This was the worst part about sex; cleaning up.

Making up his mind, he went to the bathroom and turned on the faucet, filling the tub with warm water. A few minutes later, he carefully lifted the unconscious succubus and placed her gently into the bath, the water soothing against her sweat-slicked skin.

She needed to be cleaned; it wouldn't be pleasant if she woke up like this.

Next, he stripped the wet sheets off the bed and tossed them into the cheap washing machine. He added detergent, set the cycle to 15 minutes, and let it run.

Taking advantage of the time, he set about cleaning the rest of the room, killing a few cockroaches along the way. Afterward, he washed his hands, dressed the book with new sheets before he returned to the bathroom.

With Briar still unconscious, Klaus gently washed her body, carefully scrubbing away the evidence of their passionate encounter. She couldn't do it herself, and he was the one responsible for putting her in this state, so it was only fair.

This was the least he could do, right?

Looking closely, she has really smooth skin. Are all demons like this? Maybe it's because she's a succubus, that is why.

No one had seen the demon race and it has already been hundreds of years since their fall and sealing. People rarely even spoke of them anymore, and when they did, it was with fear or disdain. Most assumed demons were grotesque, monstrous beings, but this demoness defied that expectation. She was...different.

Her skin, a soft and flawless shade of pink, glowed with an almost impossible smoothness. Delicate pink bat wings sprouted from her back, adding to her otherworldly beauty. She was nothing like the grotesque, nightmarish demons he had imagined.

In fact, if her skin had been a more typical human color and her wings absent, no one would have ever suspected she was anything but human.

It is really a shame. If she was human, then she would be accepted by society.

With that thought, Klaus sighed and resumed his cleaning.

However, at the same time, he had to battle against his growing desires. Unbeknownst to him, Briar, being a succubus, was unconsciously releasing pheromones that were particularly enticing to the opposite sex.

This was a natural trait of succubi, similar to how humans emitted heat from their bodies; it wasn't considered magic or mysticism.

The higher a succubus's rank, the more powerful the effects of their scent would become.

Though Briar was of low rank, her demonic lineage made her pheromones unbelievably stronger than expected, much to her own misfortune.

"Shit!" Klaus groaned as his limp member stirred to life, hardening with an unwelcome surge of arousal.

He was overwhelmed by a wave of unfamiliar sensations.

It was a disturbingly familiar feeling which had caused him to lose control and found himself mindlessly thrusting into the demoness.

Fortunately, he'd already finished washing Briar, toweling her dry, and placed her on his freshly made bed. A moment later, and he might have started round two right there in the bathroom.

Klaus frowned, seeing the still naked Briar on his bed.

I can't leave her like this, but I don't have any women's clothes. One of mine should work, right?

He grabbed a plain white T-shirt from his suitcase and quickly, if awkwardly, dressed her upper body.

Needless to say, the shirt, designed for his six-foot frame, dwarfed Briar, who was of more average height. It hung on her loosely, and the sleeves dangled past her fingertips. Still, it provided some coverage and better than looking at her while she was in her birthday suit.

For her lower half, that was another problem altogether.

Klaus rubbed his temple.

He didn't even need to try. His shorts and jeans were out of the question. Briar's thighs, wide hips, and ample buttocks were simply too much for his clothes. A single glance confirmed it.

The thought of rushing to the nearest shop briefly crossed his mind, but he quickly dismissed it. It was six in the morning, far too early for any shops to be open.

He let out a heavy sigh.

Wait... now that he thought about it, if it was already six am, that meant a whole new day had arrived. In other words, he'd passed out and slept through the night, only to wake up at the crack of dawn.

A shiver ran down his spine at the realization.

That's ridiculous, right? Just one round was enough to knock me out for the whole day? Damn, that's terrifying to think about. Wait... what about the Soul Contract?

As his thoughts spiraled, the memory of the mysterious phenomenon that had entangled both him and Briar in this mess suddenly surfaced.

The Master and Servant Contract.

Briar had initially resisted, but the curse embedded within the Soul Contract quickly took hold. Perhaps because she was a succubus, the curse manifested as a succubi-specific affliction that demanded his intervention. To break its effects, he had to dominate her both physically and mentally.

The process had been rough, but he had no other choice.

…Or at least, that's what he told himself.

At any rate, It doesn't seem like she would wake anytime soon, so I'll just leave her to rest.

By the way, I still haven't checked out the information hub. I also need to check out some useful equipment too, then a gift for the landlady.

How troublesome. I'll have to also add female clothes to my to-do list.

Thinking about the situation, he never thought something like this would happen. To begin with, would someone expect themselves to accidentally summon a demoness?

The situation was undoubtedly weird, but whatever the case may be, he now has a new roommate.

"Ugh."

Klaus sighed and scratched the back of his head.

After taking a shower and changing into clean clothes, he lay down on his bed beside the peacefully sleeping Briar and reached for his smartphone.

With nothing better to do, he opened the information hub given to him by the government.

As he scrolled through various articles, a thread titled "Beginner's Guide to the Shadow World" caught his eye. It was posted by an anonymous user.

Noticing several other posts from the same username, he hesitated briefly before deciding to read this one first.

+

「 Shadow Realm 」

「 Alson known as the Shadow World or the World of Darkness. It is a vast ruined dimension. More accurately, it can be described as a small universe within a greater one, as multiple Shadow Worlds are known to exist. 」

「 Shrouded in mystery and largely unexplored, the realm is desolate and devoid of life, except for the Shadow Creatures and the corrupted ecosystems they inhabit. 」

「 The realm is desolate, devoid of life, save for the Shadow Creatures and the corrupted ecosystems they inhabit. While it is said to be eternally dead, traces of a ruined civilization have been discovered by exploration teams. However, the cause of its destruction remains unknown. 」

「 The Shadow Realm is far larger than Earth, though its true size is undetermined. Some claim it is limitless. Its celestial structure is inconsistent with different regions displaying entirely different stars, constellations, and even varying numbers of moons and suns. 」

「 Further research is required to uncover the full scope of the Shadow Realm's vastness. 」

「 Note No. 1: Escape is impossible unless a hidden trial is resolved. Once a Shadow World is cleared, an exit will remain open for 24 hours before the realm collapses and destroys itself from the inside out. 」

「 Note No. 2: There are no native humans in the Shadow Realm. If you encounter someone claiming to be human, eliminate them immediately. It is highly likely they are a Shadow Creature in disguise. 」

「 Note No. 3: The Shadow Realm enforces absolute fairness. Creatures of all levels, weak or unimaginably strong, lurk within its depths. Proceed with extreme caution. 」

「 That would be all. Thank you for reading this short briefing. We wish you luck on your journey, Apprentice! 」

+

The Beginner's Guide to the Shadow World ended with that last sentence.