Chapter 4 — A Rich Morning Milking and the First Hunt
The next morning, the clear, crystalline sunlight of the Abyss spilled over the window frame of the cabin, dyeing the blue fields a shimmering gold.
Sitting cross-legged on the wooden platform in the yard, Yushin slowly steadied his breathing, savoring the heavy aftershock of demonic energy still swirling in the depths of his dantian.
"Whew... haa."
Through the night, he had drawn in the scattered remnants of the former Demon King's mana lingering in the air and refined it within his body. The result: his mana stat, which had stubbornly remained at F-Rank ever since his awakening as a hunter, had finally leaped up a full step.
His mana had risen from F-Rank to E-Rank. The current of demonic energy circulating through his body had grown thicker and more vivid — and yet, as if blocked by a sheer wall of solid rock, any further growth had come to a grinding halt.
"My mana circuit feels completely clogged. How do I push it higher from here?"
At this stage, you will need a decisive catalyst capable of breaking through your plateau.
"A catalyst? What kind of catalyst are we talking about?"
I am referring to an extraordinarily intense and special physical stimulation — an event capable of shaking your brain and your dantian to their very foundations, Master.
"A special stimulation, huh... Is there any way to create such a catalyst right now?"
The probability is exceedingly high. Are you ready, Master?
The moment Yushin nodded with a serious expression, Yurang-i, as if she'd been waiting for exactly this, projected a text window into the air — one that was resolute and utterly obscene.
In that case... I strongly recommend endless copulation and semen release with a female demon.
"..."
The face of Yushin, who had been listening so earnestly, went cold in an instant.
"Are you seriously just going to keep running everything back to sex? Things were going so well — do you have to ruin it like this every single time?"
That is not a quip but the truth, Master. Have you forgotten the results of yesterday? Your vigor and mana awakened in a single bound thanks to the unprecedented creampie you delivered to a virgin. For one who bears the Vessel of the Demon King, the fastest and most perfect training method is to pierce a female's womb and exchange primal essence.
"Ha, honestly... you're not wrong, but hearing it is just absurd."
Yushin clicked his tongue and rose from his seat — and just then, the cabin door quietly opened. Lilith stepped out with a slightly limping gait, her face flushed with embarrassment.
"Good morning, my lord...!"
Perhaps because of yesterday's ferocious first joining, the silver-haired succubus could not quite bring her narrow thighs fully together, and she came toward him with an adorably waddling walk.
"How's your body? Does it still hurt a lot?"
"No, it's not pain exactly... You held me so much yesterday, my lord, that my legs are still completely boneless. Hehe..."
Lilith blushed shyly and coiled her slender demon tail — the one trailing behind her lower back — this way and that. Then, all of a sudden, her eyes lit up and she grabbed Yushin's hand, pulling him along.
"My lord, yesterday I was too dazed to serve you properly... but this morning, there's a service I've been dying to try!"
"Huh? First thing in the morning, what...?"
Instead of answering, Lilith led Yushin into the bedroom and laid him down on the bed.
This is the optimal chance to boost your mana! Good luck, Master!
As Yurang-i's cheer rang out, Lilith maneuvered her slender demon tail as flexibly as a serpent, undoing the buckle of Yushin's trousers and dragging his underwear down in one smooth motion.
Sliiip.
Welcoming his morning erection, veins bulging taut and throbbing ferociously skyward, his massive cock stood shamelessly bared in the open air.
Lilith swallowed hard, her expression one of pure rapture, and clasped her hands together.
"Your precious cock, my lord... thank you for the meal. Chuuup..."
Lilith bowed her head and captured the swollen tip of Yushin's glans between her crimson lips.
Chup! Churu-reup!
Her small mouth could barely fit half of Yushin's massive shaft. But Lilith did not hesitate for even a moment — she stretched her demon tail long and downward, and the unswallowed remainder of his pillar and his balls were squeezed and stroked with a slick, clinging pressure.
"Nngh...! Mmph, slrp... chuppop, shluuuuck...!"
The lewd, sticky sound of a girl voraciously slurping down a grown man's cock filled the bedroom to bursting.
Lilith tickled the area around his urethral slit with the tip of her tongue, then shoved the veins-strained pillar deep into her throat, choking herself on it in devoted deepthroat service.
Guk, gukk!
Tears of pleasure and asphyxiation welling at the corners of her eyes, Lilith nonetheless worked her jaw diligently, her face lost in bliss.

When the tip of her tail lightly teased Yushin's sensitive perineum, his hips jerked upward all on their own.
"Ngh... I'm coming, Lilith!"
"Shluuup, shluuuuuuck...!"
As if determined not to waste a single drop of semen, Lilith pursed her lips tight and swallowed his cock all the way to the root, sealing it in her throat.
Pshooosh! Byu-ruru-ru-ruek!
Hot, thick ropes of morning seed poured relentlessly down Lilith's throat.
Her chin tilted high and her eyes rolling back, Lilith gulped down Yushin's milky fluids, gulp after gulp.
After suckling on his cock for a long while, she finally pulled her mouth away — then, with her adorable little tongue, lapped up every last trace clinging to his glans, leaving it perfectly clean.
"Gulp, khh... Oh my, I'm so sorry. It was just so delicious that I burped..."
Her face flushed red, she wiped her lips and left a soft little kiss on the tip of his glans.
"Thank you for the meal, my lord... Maybe because it's morning seed, it was unusually thick and sweet. Every morning from now on... you'll feed me like this, won't you?"
At the sight of Lilith casting him a seductive, smiling glance from beneath her lashes, Yushin could do nothing but nod in a daze.
"Fufu, please enjoy your breakfast!"
When Yushin got up from the bed and sat down before the table, the spread laid out before him was frankly staggering: golden-grilled eel, plump oyster pancakes, fresh chive salad, walnut rice, and even a jug of deep-red raspberry wine.
"Huh? You're not eating, Lilith?"
Lilith wrapped her arms around her slightly rounded belly and smiled bashfully.
"I ate your thick semen until my belly was about to burst... so I'm already completely full. Tonight, too... I'll be looking forward to it?"
Behind the girl's clear, innocent eyes, a seductive aura dripped steadily, like a thousand lustful serpents coiled into knots.
At this rate, she'll suck me dry down to the bones before evening even arrives...!
Yushin devoured the table's contents at lightning speed and scrambled out of the cabin in a panic.
"I-I'll be back!"
You need to raise your mana regardless, Master. Was there truly any reason to flee?
"There's such a thing as atmosphere, you know! Just now I was genuinely about to get every last drop of essence wrung out of my bones."
After walking a long stretch toward the outskirts of the village, his breath coming in pants, Yushin's eyes caught sight of it — a massive, ominous crimson fortress looming beyond the horizon.
"What is that castle? It looks pretty far off..."
I wholeheartedly recommend it. That place is precisely the destination you must reach, Master.
"What's there?"
One of the powerful Demon King candidates currently resides in that crimson fortress.
"A Demon King candidate?! Isn't that dangerous, then?"
She is the Demon King candidate of a prestigious vampire house — but merely a female whose pussy defenses are utterly pathetic. You may simply flatten her, conquer her, and be done with it.
"You're actually insane..."
Yushin was exasperated by Yurang-i's reckless commentary, yet he instinctively knew this was a path he could not avoid if he meant to become Demon King.
As Yushin set his steps toward the fortress, a strange forest of petrified black timber blocked his path and revealed itself.
A silent forest where not a single breath of wind stirred.
The moment the damp, chilling demonic energy began crawling up his skin, red eyes flashed from the darkness within the woods.
Grrrrrr...!
"A hellhound...!"
A variant magic beast contaminated by the former Demon King's residue has appeared. Slaying it solo grants bonus special experience.
A massive hellhound, its flesh melted away to expose bare knuckles of bone, came charging at Yushin, drool streaming from its jaws.
All he had was his bare body and the E-Rank mana he had only just refined.
Yushin drew a deep breath and pulled the demonic energy of his dantian up into his palm.
Crackle!
The blue-white demonic energy, at first scattering shapeless and wild, condensed under Yushin's focus into a single, razor-sharp spear of light.
"Die...!"
KWAAAANG!
The sharp spear of demonic energy launched from Yushin's fingertips split the air and pierced the hellhound squarely between the eyes.
Yelp!
A single blow. The beast dissolved into black smoke and scattered into the void, and a pure, refined energy seeped into Yushin's body.
Combat victory. Contaminated entity neutralized.
Special experience of the Dimensional Wanderer has been acquired.
"Whew... so this is real combat in the Abyss."
As Yushin exhaled a rough breath and emerged from the forest, a trading village of demons enclosed within sturdy walls came into view before him.
A city of rough lawbreakers, raised in the very heart of the Abyss.
Stepping into a tavern where the stench of blood and the reek of liquor mingled in the air, Yushin tossed a handful of silver coins onto the counter and asked in a low voice.
"I want to ask about the red castle beyond that horizon."
The hulking tavern keeper, who had been wiping down a mug, looked Yushin up and down before answering in a grim murmur.
"The Blood-Red Castle of House Amelia... Any man who seeks that place is one of two things. Either his throat gets cut and drained of blood — or he's a madman coveting the seat of the Demon King candidate."
The corner of Yushin's mouth curved into a smile.
"Then I suppose I'm the latter."
The footsteps of the wanderer, intent on claiming the true seat of the Demon King, drew steadily closer to the blood-red fortress where the vampire noblewoman Amelia Tia awaited.