A Strange Crossover

A heartbeat after the last agreement was made, the room shook beneath Arata's boots.

Seven bonds. Seven old creatures. Arata now had authority over seven wills.

It was presence, not flame, that lit the air. Through the stone walls, up into the abandoned shrine above, and then... beyond, a faint, echoing murmur ran. It was a ripple in the world's leyline web, pulsing through the earth itself. And the aftershock followed.

Not a little tremor. Not even a shudder.

As the thousand-year-old seal completely broke and divine energy surfaced again, the earth screamed in recognition as a magnitude-five earthquake rolled throughout the area in concentric waves.

The torches in the room burned brightly, then were all extinguished at once.

Not a word. Once more. Now, however, things are different.

Slowly, Arata exhaled, and the system appeared before his first eyes. Much more ornate than normal, it was crystal blue with ancient gold accents, as though the interface was honoring the recent events.

[Servant Codex Unlocked – Viewing Active Roster...]

Name: Lilith

Race: Primordial Demon Queen

Class: Apex Caster / Corruption Sovereign

Level: 129 (Suppressed)

Loyalty: 81% (Stable – Respect-based)

Stats:

STR – 145

SPD – 136

INT – 300

END – 180

STA – 168

Curse Energy – 540

Charm – 999 (Maxed – Passive Aura Active)

Traits: Seductive Insight, Sin Domain: Lust, World-Corruptor, Queen's Pact

Name: Kanade

Race: Slime

Class: Progenitor

Level: 112

Loyalty: 67% (Dormant Trust)

Name: Saja

Race: Snake, bird Hybrid, Dragon

Class: Progenitor

Level: 119

Loyalty: 55% (Unstable – Violent Tendencies Controlled via Pact Seal)

Name: Minagi

Race: Apex Succubus/ Vampire

Class: Progenitor

Level: 108

Loyalty: 72% (Playful Compliance)

Name: Kanade

Race: Plant Sprit

Class: Progenitor

Level: 121

Loyalty: 88% (Honor-Bound Obedience)

Name: Tamamo no Mae

Race: Progenitor

Class: Nature Affliction / Summoner

Level: 101

Loyalty: 41% (Trauma-Fused – Careful Monitoring Required)

Name: Hiruko

Race: Progenitor

Class: Virus Queen / Soul-Taker

Level: 130

Loyalty: 39% (Chaotic Neutral – Mental Stability Fluctuates)

Arata scrolled through each entry calmly, his expression unreadable as the seals on his Servants' powers flickered back online, one by one. Their full strength hadn't returned — not yet — but the fact that they were back at all was enough to tilt the supernatural world on its axis.

All those powerful beings stirred who once sealed them.

Few gods stirred from meditation atop a sky palace.

The Devil, Demon, even the angel connected to the ruin/chamber felt the change.

Many strong entities who are still hidden understand the seal is not broken but released.

And in the shadowy corners of Hell, where fallen god sat on bone thrones, a name was whispered on divine tongues not heard since the days before the war.

"Lilith… walks again."

But in the darkness underground, Arata stood composed. A pulse of dark-gold light faded from his skin, the contract marks settling beneath his veins.

He opened his eyes.

"Lilith."

Her voice responded immediately — smooth and low, like silk being drawn across steel.

"Yes, Master?"

"I'm giving you your first command."

A soft giggle echoed inside his mind, delighted by the weight behind his authority.

"Speak it, and it is done."

"Teleport us. I've mapped the coordinates into the system — my underground safehouse beneath the city. Old subway tunnels. Ward-lined. Private."

There was a pause — not from confusion, but from admiration.

"Even in your youth… you build your kingdom wisely. Very well."

Arata raised a hand, watching as sigils bloomed in violet arcs around Lilith fingers, merging with the runes carved into the air. A faint whine filled the air like high-pressure steam building under a lid.

Lilith's aura surged. The ground beneath them briefly glowed red.

Then—

All of them disappeared instantly at Arata safe house.

The ancient shrine got demolished as it purpose was over in a pulse of distortion.

The Earth shook a final time.

And a moment later, Arata appeared in the shadows of his hidden lair — dim light, iron walls, broken train tracks overtaken by roots and moss. It was quiet. Safe. But now… it's a little more crowded.

Seven women, newly awakened, stood behind him.

Some knelt. Others stood like they would not, arms crossed or weapons drawn.

But all of them looked at one boy with one command seal glowing in his spine. As well as the magic collar around her neck.

Arata cracked his neck.

"Good. Now that's tiring.."

The next day

"There is no quest…" Arata muttered as he watched the quest tab and nothing popped up.

After he and another monster girl wear transparent clothes in his safe house, nothing special happens. No one talked or spoke a word. Instead, they began to look around the safe house and get familiar with it.

The safe house Arata built was spacious, yet not large enough to accommodate 6-8-foot-tall demons. The monster girl was soon done with touring the house and came up in his room, surrounding him like prey.

As the last echoes of his orders faded into the steel and stone of the underground safe house, silence returned. But it wasn't the respectful silence of soldiers obeying a commander.

It was a hungering one.

Their eyes—all seven of them—slowly turned back to him. Cute. Inhuman. Hungry.

And not for war.

Lilith tilted her head, her long horns casting shadows across her chest as her black lips parted in a low purr.

"You're impressive, Arata… but let's not mistake binding for

obedience."

Minagi's laugh was a musical hum, her eyes half-lidded with amusement.

"We're monsters, not dolls. We don't move without a price."

Hiruko slithered across the stone floor, her many hidden tendrils twitching beneath the folds of her ceremonial sea-drapes.

"We followed Lilith once… then devoured gods. You think a

contract alone satisfies us?"

Tamamo no Mae sighed, folding her fan closed with a snap. Her tail curled behind her, shimmering with divine heat.

"You've summoned the monster progenitor, Arata. We don't take

orders without tribute."

Saja leaned forward, fangs glinting beneath her veil.

"We want your energy, boy. Your Ki."

Kanon giggled from the shadows, thorned vines already coiling near her bare feet.

"Your life force is delicious. I could smell it since the moment you cracked our seals."

Even Kanade, ever silent and composed, took one deliberate step forward and spoke for the first time since their arrival.

"The contract binds us to you. But without regular offerings… that bond will fray. Dissolve."

Arata was calm. He'd expected this.

He stared at them all—these ancient monsters, these hungry queens—and spoke without flinching.

"You want my Ki energy?" he said, arms folded. "Then I'll offer it."

A tense silence enveloped the room. Even Lilith's smirk flickered in surprise.

"But—" he raised a finger, eyes glowing faintly with the System's light, "—on my terms."

He extended his hand, taking a deep breath, conjuring a web of defensive scripts within the System UI. Golden rings of protection, limiters, and feedback failsafes materialized, encircling his chest like an impenetrable armor of law.

[New Pact Clause Added: "Feast"]

[Servants may draw Ki for contract sustenance.]

[Limiter: Daily Threshold – 85.5% of Host's Total Energy]

[Emergency Override: Forbidden Without Verbal Consent]

He looked at them again, each glowing seal orbiting his body.

"You can draw what you need to remain active. But not enough to harm me. Not enough to own me. This isn't about domination. It's mutual."

A long pause.

Then... Lilith's laughter started, low, rich, and wicked, filling the room with its dark allure.

"Smart. Not submissive, but not foolish, either. You'll still make a fine King of Monsters."

Minagi swayed her hips forward, already feeling the ambient Ki leaking from him like a perfume.

"Mmh~ Then I'll take my share now. Just a sip. Just a taste."

Arata stood still, unwavering. "Ten seconds. No more. Each."

One by one, the six monsters stepped forward. Some touched his hand. Others pressed their lips near his chest.

One—Kanade—merely stood beside him and absorbed his aura like mist into water. Their methods varied, but the intent was the same: siphon his Ki.

And with it, came their obedience.

Not blind loyalty or affection.

Not affection or adoration.

But rather, a pragmatic obedience—the pact now secure, the equilibrium maintained.

Lilith was last. She approached slowly, her wings spread in full glory, her eyes glowing crimson.

Instead of taking Ki by force, she gently brushed her clawed fingertip along his jaw and whispered like a lover in a dream:

"You feed your monsters like a god who knows he's still mortal.

Clever," she said with a smile. "I accept."

Her lips kissed the air beside his cheek, and she drew from him—not violently, but reverently.

Ten seconds later, she stepped back, eyes fluttering with delight.

The system glowed.

[All Pact Contracts Stabilized – Sync Complete]

[Servants Now in Sustained Active State]

Arata exhaled deeply, feeling a faint sweat on his brow — not

from physical exhaustion, but from the overwhelming psychic pressure of numerous ancient, awakened beings drawing energy from him simultaneously.

And yet—he smiled.

"Now," he said, stepping onto the central platform once more, voice steady, eyes sharp.

And for a while rested to recover his lost Ki and stamina as it was never easy for someone like him to feed off his Ki with Progenitor.

.

.

.

Meanwhile with Lilith and Primogenitor

Steam hissed from broken pipes, curling through the gloom like breath from some sleeping god. In the center of the lair, Arata lay unconscious, breath steady, skin pale but intact—drained after feeding all seven of them with his raw, potent Ki.

And around him gathered monsters.

Ancient ones.

Unstable ones.

Kanon, the queen of plants, stood stiff and distant in a far corner. Her eyes were ancient, her voice low and cold.

"Hmph… He's reckless, scattering power like seeds in the wind. What kind of Boss collapses after a single feeding? Baka…"

Her pale white arms crossed over her huge chest, a mix of concern and resentment flickering in her ancient eyes. Despite her protective facade, her mossy roots inched closer to Arata, torn between loyalty and a darker impulse.

"Not that I care. I just don't want my queen following a weakling."

Minagi, queen of vampire and succubus, reclined on the rusted frame of a broken railcar, her tail resting across her lap, idly spinning. She licked the edge like a cat tasting cream.

"He looked so cute when he collapsed. Helpless. I almost wanted to pin him down and drain him dry."

Her eyes sparkled with sadistic affection. "I mean, really, let me play with him just once. I promise I'll probably put all his bones back in the right place."

Saja, the queen of Lamia, Dragon, and Harpy, slithered upside down along the pipework above, her golden eyes glowing in the dark. Her voice was a sultry purr.

"He has such delicious fear hiding beneath that calm. Mmm… I want to see him crack. Hear him beg. Just once. Then maybe I'll protect him~"

She giggled, tail coiling and uncoiling like a noose. "We could turn him into a perfect little pet... if Lilith's gaze weren't upon us."

Tamamo no Mae, elegant as ever, sat on an old stone pedestal with her legs crossed, sipping from a conjured cup of saké. Her golden eyes narrowed as she stared at Arata.

"He is... intriguing. But an intriguing flame will still extinguish if left unattended." She sipped again. "What if one of us nudged him with a little accident, and then we took over? I'd make a much better strategist alone, anyway."

Despite her aloof demeanor, Her tails instinctively coiled around him, as if protecting her cherished possession.

Hiruko, the Hundred Tentacle, let her many unseen limbs sway under her tattered robes, her voice like a wet whisper.

She tilted her head at Kanade. "Unless someone wants to eat him alone first?"

Kanade, the Queen of Slime, was perched near a vent, arms crossed, body shifting with the faint rhythm of her emotions.

"He's dumb. He didn't even flinch at feeding us. That's either guts or idiocy."

She looked away abruptly, a flicker of uncertainty crossing her gaze. "...Not that I care. Whether he lives or dies holds no significance to me," she muttered, her voice tinged with a hint of hidden emotion.

But her body stayed retracted. Her slime quivered near him like a watchful, invisible shield.

Then…

A wave of silence.

Not normal silence.

Enforced silence.

Lilith rose from her place near Arata's head. She said nothing as her wings unfurled behind her like a cathedral of darkness. Her presence was immediate. Suffocating. Holy in its monstrous majesty.

Every pair of eyes — predator, divine, twisted — snapped to her.

She didn't raise her voice.

She didn't need to.

"You have forgotten who commands you."

The shadows bent toward her.

Her tail flicked once.

Minagi's furl her wings back out of respect for Lilith.

Kanon's roots recoiled beneath the floor, hissing steam erupting from the tiles.

Tamamo's saké cup cracked in her hand.

Lilith stepped forward, between Arata and the others.

"Lay a finger on him, and I will shatter you."

Her eyes burned like coals in the underworld, her voice laced with centuries of absolute rule.