Chapter 506 Demanding Payment
Edited by: Kanaa-senpai
After reassuring Rias and the others, and also letting Vali know he didn’t need to keep searching for him and Kuroka, Aki went to the Underworld.
This mission might have been nerve-wracking, but he wasn’t going to let it go.
Not only would he not let it go – he was going to demand more compensation.
Sirzechs was his brother-in-law, and with Venelana and Greyfia’s situation, Aki felt awkward going to him. But the other Demon Kings, Odin, Michael, Shemhaza – not one of them was going to escape.
The first target was naturally the Demon King who liked playing magical girl.
After all, she was the only one who’d actually promised a reward.
When Aki found Serafall, she had clearly already heard from Sona Sitri about his safe return.
When comforting Rias and the others, Aki hadn’t forgotten to notify Sona Sitri. Although she hadn’t moved in, ever since she’d forced that breakthrough, her attitude toward him was exactly like Rias’s.
A bit competitive – but the healthy kind. Aki was happy to have it.
”Serafall-sama, the mission is complete.”
Looking up at the black-haired, twin-tailed, big-breasted schoolgirl sitting on the throne, Aki said forcefully: “Because of your faulty intelligence, I was almost left permanently in the dimensional rift by Loki.”
Aki deliberately exaggerated. Even if the mission failed, the worst case was Ragnarok descending. He’d be fine.
If there was really no way to stop the Talent Copy’s actions, he wouldn’t risk his life to forcibly intervene.
Revier hadn’t even moved to fight – why should he risk everything?
Even if there was a way to revive, it didn’t mean he should disregard his own life.
Once he developed that bad habit, he might truly lose his life in the future – and drag Rias and the others down with him.
Serafall pursed her lips. She knew Aki was deliberately inflating the severity, but she couldn’t refute it.
She could only harden her voice: “Intelligence isn’t my department. Besides, this was orchestrated by Sirzechs and Odin. Why are you coming to me first instead of them?”
”I’ll settle accounts with Odin and the others gradually. Before that, let’s handle our internal matters first. As the saying goes – pacify the home before facing the enemy.”
”Where’s that saying from…”
Serafall muttered under her breath.
Aki immediately said不满ly: “Serafall-sama, please speak up. Do you have a problem with what I said?”
”N-no, please continue…”
Having the moral low ground, Serafall chose the path of submission without hesitation.
”Good. Then let’s talk about my reward.”
Saying this, Aki slowly stepped forward.
”You… what do you want…”
As Aki approached, Serafall’s pretty face gradually flushed. She stammered: “You already did it with Sona… dual cultivated with Sona, so we can’t…”
”Can’t what?”
Aki stepped up the final staircase. Going from looking up at Serafall to looking down.
Looking at the Demon King schoolgirl’s cute face, and the snowy white depth at her chest, Aki boldly – without any hesitation – reached up and grabbed Serafall’s perfectly curved chin.
”N-no…”
Serafall also knew her excuse was weak. She didn’t even have confidence saying it.
Putting aside that Aki hadn’t married Sona Sitri yet – even if he had, it wouldn’t really be a problem for Aki and her to do something.
As a Demon King, no one dared to gossip.
Besides, with Aki’s current strength and status, who knew how many Underworld peerages would throw themselves at him.
Feeling his hot hand slowly sliding down, about to reach inside her collar, Serafall finally suppressed her shyness and brought out the Demon King spirit that had charged across battlefields.
”Red Dragon Emperor, what I promised you, I’ll do. But before that, shouldn’t you go see Sirzechs Lucifer? He was the one who strongly recommended…”
”Sirzechs Lucifer? You mean Sirzechs.”
Aki wasn’t intimidated at all. If she’d said those things while slapping his hand away or without trembling – maybe he’d have pulled back.
He cut off Serafall’s protest, and while his hand felt her soft fullness, he leaned close to her ear and whispered: “Sirzechs already paid his share. How do you think Greyfia and Venelana forced their breakthrough to God-Class?”
”Huh!”
Serafall’s dark red eyes widened in shock. She almost screamed.
Every beautiful and powerful prodigy would naturally leave their mark in history.
Whether Greyfia or Venelana, they had once been genius schoolgirl Devils with their own unique titles.
Just after the war ended and they married and had children, their names gradually faded.
But that didn’t mean people had stopped paying attention.
Venelana aside – as Sirzechs’s Demon King deputy, Greyfia had always been active among the great powers.
Many people had noticed her forced breakthrough to God-Class.
There was no shortage of speculation connecting it to Aki.
But Sirzechs’s relationship with Aki remained unchanged. No one was foolish enough to risk angering both the Red-Haired Demon King and the Red Dragon Emperor over something that was only a possibility.
Venelana’s forced breakthrough was known to only a few. Serafall happened to be one of them.
The House of Bael, the Gremory household, the Sitri family, and the Phoenix Clan – the four remaining pure-blooded Devil families had been closely interconnected since the war, intermarrying with each other.
There were frictions, but they mostly exchanged resources.
Venelana came from the House of Bael and married into the Gremory household. Serafall was from the Sitri family and was also one of the Four Great Satans. Naturally she knew.
Because of the special relationships between the four great families – even though that turkey Riser Phenex had annoyed Aki, he hadn’t been killed in the end.
Of course, Ravel had played a big part too.
Speaking of which, after the world-line shifted, Aki wondered if Riser Phenex would be able to pull himself together.
Aki hoped he wouldn’t. But even if he did, it was fine as long as he didn’t come bother Aki again.
Otherwise…
Aki looked at the beautiful face so close to him. His expression gradually became dangerous.
Serafall had just forced down her shock when she saw Aki’s look and felt a fresh wave of alarm.
It seemed there was absolutely no escape for her today. Sirzechs had paid such a steep price.
No matter how open Underworld culture was, no matter how chaotic peerage circles could be – having your wife and mother slept with by another man was something most Devils couldn’t accept.
Serafall assumed Sirzechs was forced to agree. In reality, Aki, Greyfia, and Venelana had simply acted first without asking for permission…
Actually, that wasn’t quite right either. There was no permission involved.
Both sides had reached a tacit understanding to never mention it again.
And since that time, Aki had barely interacted with Greyfia and Venelana at all. The only reason those two beautiful wives came to visit was because they couldn’t help themselves and secretly came to the Human World.
”You… just do it!”
Serafall closed her eyes, wearing a face that said she was ready to die.
Aki was stunned, realizing she’d misunderstood.
He suppressed a smile. One hand continued gripping Serafall’s smooth chin while the other continued exploring inside her clothes.
After a moment, feeling the numbness at her chest, Serafall finally couldn’t help opening her eyes. Embarrassed: “Do… do you want to keep going?”
”What do you think?” Aki raised an eyebrow.
Serafall turned her head away without speaking. But her attitude already answered.
Sirzechs had paid such a steep price. She’d been so dismissive back then. Being touched a little wouldn’t satisfy Aki.
Just as Serafall braced herself to silently endure Aki’s报复 (revenge), Aki suddenly withdrew his hand – leaving only the one gripping her snow-white chin.
”As much as I want you, I don’t like forcing it.”
He pulled Serafall’s face firmly to face him, looking directly into her dark red eyes: “Greyfia and Venelana – they did it willingly too. I didn’t force them.”
”Ugh…”
Serafall’s face burned crimson. Her usually lively eyes were full of moisture.
She groaned softly. Even though she could easily break free from Aki’s grip at any time, she seemed to have no intention of doing so.
”So if you really resist, then let’s forget it.”
Looking at her vulnerable figure, Aki let go with a somewhat bored air.
”As much as I want to taste you, and even more to have you and Sona on a bed together – if it’s only through force or coercion, then forget it.”
Hearing this, she should have felt relieved or relaxed. But Serafall felt nothing of the kind.
She unconsciously pressed her stockinged thighs together, wanting to say she wasn’t that opposed, but couldn’t get the words out.
While Serafall was agonizing, Aki didn’t immediately leave. Instead he said: “Now, give me your answer. Refuse, or…”
Aki drew out the words, carefully watching Serafall’s expression.
The Demon King schoolgirl’s slender lashes trembled non-stop. She was incredibly shy but couldn’t bring herself to refuse.
Seeing this, Aki smiled.
”Alright, I understand. Then let’s go to the Demon King’s room now.”
”Ugh…”
Serafall lowered her head. No matter how much she didn’t want to face it, she knew she’d actually been hoping for Aki to do something to her too.
She’d originally had some concerns. But after learning about Greyfia and Venelana, those were completely gone.
In fact, Serafall had wanted to find a man she liked for a long time. She just hadn’t met anyone worthy.
If Aki didn’t have so many women around him, and hadn’t been with her sister Sona Sitri, Serafall might have made the first move.
She was very curious about male-female relations. Many lonely nights she’d fantasized about Aki to satisfy herself. But she was a sister-complex.
Serafall worried Sona Sitri might get angry, so she’d deliberately kept her distance from Aki.
But everyone had their limits. Even Demon Kings were no exception.
Today, after Aki’s teasing, the flame in her heart had finally ignited.
Although she was too shy to voice her agreement, rejection was absolutely impossible.
With Serafall’s tacit consent, Aki picked her up in his arms.
”Lead the way, Demon King Leviathan-sama.”
Aki grinned: “I don’t know where your bedroom is. It wouldn’t be good if we ran into someone along the way.”
”Tch…”
Serafall spat disdainfully, face red, then silently used a transport magic circle to bring them directly into the bedroom.
Setting the black-haired, big-breasted schoolgirl down, Aki looked around curiously at this lavish Demon King’s chamber.
Since it was the Palace inherited from the previous Leviathan, the interior style was nothing like Serafall’s preferred cheerful atmosphere. Instead it was solemn and weighty.
The furnishings maintained a medieval European style, but the magic technology used was awe-inspiring.
It was just a bedroom, yet it gave the impression of living on a storm-battered island.
In the living area of the split-level room, fire tongues danced in the fireplace, radiating comforting light and heat.
The sofas formed a rough area. The second floor and other places were submerged in the night-colored water.
Charcoal crackled softly in the fireplace. Outside, wild rain slapped violently against the window, intertwining into a relaxing, soothing melody.
Aki admired the clever use of magic for daily life. Rolling up his sleeves, he leaned back against the sofa and casually sat on the thick carpet.
The tawny firelight danced gently in the fireplace. He could almost hear the damp cold being drawn out of his pores, warmth gradually filling his limbs.
”Phew…”
It was as if days of accumulated heaviness and frustration were all breathed out with it. His chest felt a久违 (long-missed) lightness. Aki let his head fall back against the soft sofa behind him, and when he opened his eyes, he met the gaze of someone a few meters away – tinged with anticipation and shyness.
”Serafall…”
He unconsciously murmured her name. His body felt like it had been struck by a tiny, tingling electric current.
Upside down before him, the usually confident and bold black-haired schoolgirl seemed lost in thought.
Her two long, slender stockings-clad legs were tucked against her chest. One hand hugged her knee. The beautiful silhouette looked like a small animal afraid of the cold, curled up on the wide sofa farthest from the fireplace.
When Aki called softly, Serafall tilted her head just slightly – a reflexive response. Her unfocused gaze was fixed entirely on the fire ahead, lost in thought, unclear what she was thinking.
Her delicate, exquisite black heels were scattered on the carpet. Her pale, slender fingers rested on the silk-stockinged feet, the flesh barely showing through the black stockings.
Her fingers gently kneaded her instep, then gripped her toes and lightly shook them, relieving the foot muscles that had been tense from nervousness.
Her round, cute toes moved slightly under the stockings. Combined with her slender fingers’ almost亵玩 (indecent) caressing of the elegant arch, it formed a picture that nearly made Aki’s nose bleed.
Feeling the hot rush in his nose, Aki quickly sat up straight.
As expected – his resistance to stockinged feet and pretty legs was negative.
And this scene reignited the desire he’d calmed down from earlier.
He’d almost forgotten – he wasn’t here to rest.
Quite the opposite – he was about to get some exercise.
Just as Aki was about to act, something soft pressed gently against his back. An electric shock shot up his entire spine, freezing all his thoughts.
Instinct… or rather reflex, Aki immediately activated Instant Illusion Talent. Naked, he entered combat readiness.
Thanks to this, he could clearly feel every movement of Serafall’s stockinged toes across his back.
The silk stockings rubbing against his skin made a faint swishing sound. The resistance was like a massage – deeply enjoyable.
Serafall was completely silent, her breathing soft and steady.
Aki couldn’t see, and had no way to guess what expression she was wearing now. He only felt the Demon King schoolgirl behind him using her delicate toes like the tip of a pen, tracing something across his back.
Her soft, bare foot pressed against Aki’s back, sometimes pressing the whole sole down in a不满 (displeased) push, sometimes lightly tapping with three or four toes. His firm back muscles were nearly melting under these silk-stockinged feet’s teasing.
”Serafall… mgh…”
A pair of lamb-fat-jade-smooth slender hands reached over his shoulders from behind – like a patient spider waiting for prey to make a sound. Before Aki could react, his world was sealed into complete darkness.
Then his earlobe was gently taken between two cool, soft lips. Warm, damp air streamed into his ear canal, playing a clear melody against his eardrum.
”Before I say otherwise, keep your eyes shut…”
A familiar tone with an unfamiliar inflection – almost impossible to believe it came from the same girl who’d just been acting so shy.
There was no room for thought. His body moved on instinct, obeying the command and closing his eyes tightly.
”Your mouth too. Don’t open it on your own…”
Her jade-like fingertips were cool and smooth, gliding to Aki’s lips and slipping directly into his slightly gaping mouth.
His tongue instinctively wrapped around Serafall’s fingers and dragged them deeper into his mouth, suckling greedily.
”Hehe… just like that…”
Serafall used two bell-like giggles to mask a flash of heavy breathing, continuing to tease his earlobe in a steady, calm voice.
”Don’t… be so rough… mmgh?”
Her silk-stockinged legs crossed in front of him, gently pinching the thick, erect member at his crotch between them from both sides.
”Guh!”
”Ah… did I hurt you?”
Serafall tilted her head slightly, looking at his suddenly furrowed brow. As if she’d seen something adorable like a puppy, her cold expression couldn’t help breaking into a smile.
After deciding to face her feelings, she finally gradually regained her usual self.
Whether as a big sister or as a Demon King, she couldn’t keep letting Aki dominate in this matter.
Her silk-stockinged feet gently stepped on the gradually-hardening Little Aki (Aki’s member) with the pace of spring willows – encouraging it to grow firmer and thicker.
Serafall’s body still carried the sweat from when she was nervous and shy. The young woman’s scent melted within it. The originally cool chill gradually warmed under the fireplace into a subtle, hidden fragrance.
—
Summary:
Aki visits the Underworld to collect payment from Serafall for the Loki mission. After revealing that Sirzechs already paid with Greyfia and Venelana, Serafall’s resistance crumbles. He nearly takes her by force but instead offers her a genuine choice. She silently agrees, and they retreat to her lavish Demon King bedroom, where Serafall – shedding her shyness – takes the initiative with an unexpected display of silk-stocking foot worship.
—
Trivia:
1. Serafall is the Demon King Leviathan, the magical-girl-obsessed female Demon King.
2. The four great Devil families are Bael, Gremory, Sitri, and Phoenix – they’ve been intermarrying since the war.
3. Greyfia and Venelana were also forced through to God-Class through Aki’s dual cultivation.
4. Serafall and Sona Sitri are real sisters – Serafall is the older sister with a sister complex.
5. Aki uses Instant Illusion Talent (a Sacred Gear ability) to strip and enter combat readiness reflexively.
6. The Demon King Leviathan’s palace is inherited from the previous Leviathan, explaining its heavy, medieval style.
7. Serafall has secretly fantasized about Aki on lonely nights – this is her first experience.
Notes:
• Kuroka – Koneko’s older sister is a Nekoshou with a top-tier physical figure. She possesses a dark history of killing her own master, a defining aspect of her identity that deeply shapes her past and complex relationships with others.
• Kuro – A companion or observer who hides during combat and provides information to Aki.
• Rias – Rias Gremory, a sharp, playful high-class devil and Gremory heiress, is Sirzechs’s sister and daughter of Venelana. Known for her crimson hair, she heads the Occult Research Club, protecting her peerage including Mio, Xenovia, and Maria. As Aki’s fiancée and partner privy to his transmigration, she guides his cultivation while navigating complex feelings toward his pursuit of Grayfia and her mother.
• Vali – A stoic, arrogant half-demon youth of Ancient Devil blood, this battle-crazed individual is the White Dragon Emperor, Albion. Wearing resplendent white armor with light-absorbing wings, he triggers Balance Breaker at will. Taken in by Azazel but later joining the Khaos Brigade, this cynical warrior seeks a fated rival, though Governor Shemhaza admits his actions reflect a lack of supervision.
• Aki – A tall, handsome Kuoh Academy student and Red Dragon Emperor, he is a reincarnated cultivator who currently inhabits a pitch-black cat form with piercing azure eyes. Calculating and protective, he commands the Boosted Gear and Origin Blood. Connected to the Gremory household and Naruse Mio via a Soul Network, he manages a vast harem while navigating ancient conspiracies and his own feline instincts.
• Shemhaza – A pragmatic, glasses-wearing Fallen Angel executive and Governor-General who succeeded Azazel. A scholarly powerhouse advocating for peace, he leads the peace-seeking faction but failed to punish Kokabiel for previous transgressions. Masking his intent with calm analysis, he balances strategic retreats with raw combat power to preserve assets while locked in a duel with a demon king-class foe.
• Sirzechs – Sirzechs Gremory, the red-haired Demon King Lucifer, is a formidable strategist and Rias’s brother. Known for his battlefield prowess, he charmed the enemy general Grayfia into defecting, later marrying her and fathering Georgix. A complex, often elusive leader, he balances diplomatic duties and rebuilding the Underworld with a cultivation obsession that frequently strains his family life, yet he remains an ally to Aki.
• Venelana – Venelana Gremory, the elegant, silver-haired matriarch of House Gremory and former Bael noble, is a refined beauty known for her powerful bloodline. Wife to Georg and mother to Rias and Sirzechs, she is often compared to figures like Shela and Greyfia. Despite her poised exterior and complex family status, she is currently involved in a secret affair with Aki, a reality likely known to Rias.
• Greyfia – As the Gremory household’s silver-haired Head Maid and Sirzechs’ devoted wife, she is a reserved beauty who balances domestic duties with her formidable Lucifugus bloodline and space mastery. Once an enemy general charmed into defection by Sirzechs, she is now his loyal partner and Venelana’s daughter-in-law. Beyond her marriage, she shares a deep, personal connection as the lover of Aki.
• Michael – A handsome, pragmatic Archangel in golden armor, he leads Heaven and the surviving Seraphs after God’s disappearance. Wielding a dragon-slaying Holy Sword, he possesses power exceeding a Super-Devil and unmatched intelligence. He maintains the System to preserve peace among the Three Factions, prioritizing order over individual lives, and modified the Holy Sword Project’s fatal rituals.
• Sona Sitri – Sona Sitri, aka Shitori Sona, is a High-Class, pure-blood devil who became a master strategist at seventeen. As Kuoh Academy’s Student Council president, she wears formal attire and glasses, sporting short black hair and a stern look. Noted for her massive Mana, she tactically leads the Sitri family and manages local supernatural threats while deferring to Rias Gremory.
• Serafall – Serafall Leviathan is a Super-Devil, one of the Four Great Satans, and Sona Sitri’s bubbly, energetic sister with an extreme sister-complex. A peer to Sirzechs who once vied with Grayfia for the title of the Underworld’s strongest female devil, she balances her immense power and threat-monitoring duties as a leader with a personal preference to avoid conflict.
• Sitri – The prestigious devil hierarchy family name carried by Sona, representing her noble lineage and identity.
• Sona – An analytical, bespectacled young woman with long black hair, she is the Sitri clan’s future head and Student Council President. Highly intelligent and composed, she manages her council with structured leadership. As a strategic, noble ally to Rias, she works to protect their shared interests and serves as a capable, potential collaborator.
• Y – The first initial/part of the name Y Ddraig Goch.
• Lucifer – A house name associated with the White Dragon Emperor’s lineage. An original Demon King whose lineage is inherited by Vali.
• Gremory – Rias Gremory, a pure-blood devil of the prestigious Gremory household, has striking crimson hair, blue eyes, a curvy figure, and a prominent bust. Wielding top-level demonic power, she governs Kuoh Academy’s hidden hierarchy and leads her Gremory family members in a high-stakes competition against the rival Phoenix clan.
• Phoenix – The Phenex noble clan, from which Riser and Ravel originate, is known for their unique bloodline abilities and the healing properties of their tears.
• Natural – A young succubus who remains unthreatened in the current timeline.
• Riser – A tall, yellow-haired, punkish High-Class Devil of the Phoenix clan who wears a crimson suit, wields infinite wealth, and utilizes fire control with near-immortal regeneration. Following a crushing defeat by Aki that dissolved his peerage and influence, this arrogant, traumatized leader is driven by obsession and hatred, having lost his fiancée Rias Gremory while still pursuing Super-Devil status.
• Ravel – A blonde, twin-tailed Phoenix princess and pure-blooded Devil, this sharp-tongued, lolita-clad heiress with flaming wings is the Queen of Aki’s peerage. Nearing her Breaching, this untouched girl was absent during the inner circle scene. Devoted to Aki and Rias, she facilitates Dual Cultivation for their recovery and remains a protective, fiercely loyal ally to new members.
• Leviathan – A title of the Four Great Satans held by Serafall and Katerea, designating their status as high-ranking Demon King-class entities. Serafall maintains crucial diplomatic ties with other factions as a leader scheduled to attend the summit, while both are defined by their supreme authority and distinct, powerful identities within the underworld’s hierarchy.
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Edited by Kanaa-senpai.
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