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The Eminence in Shadow vs One Punch Man

RSisekai
56
chs / week
The average realized release rate over the past 30 days is 56 chs / week.
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Synopsis
In a dimension-rending accident, the profoundly bored and comically overpowered hero Saitama, along with his loyal cyborg disciple Genos, crash-lands into the world of Cid Kagenou, the meticulously self-styled "Eminence in Shadow." Cid, who thrives on orchestrating grand, shadowy narratives of his own hidden omnipotence, finds his carefully constructed reality (and his coolness) utterly demolished by Saitama's ability to accidentally solve apocalyptic threats with casual indifference, often while searching for good sales or a decent bowl of noodles. As Shadow Garden grapples with ancient evils, cosmic games involving the world's soul, and the ever-present Cult of Diablos, they must also contend with their new, bafflingly powerful "allies" who rewrite the rules of power, combat, and dramatic tension simply by existing. Cid's quest for Eminence becomes a hilarious, goosebump-inducing struggle against the universe's escalating absurdity, where the greatest threats are often upstaged by misplaced portal coordinates, polite refusals, and the existential crises of minced meat cutlets, all thanks to the lingering, reality-warping "Saitama Effect." It's a saga of overpowered heroes, shocking OP actions, harem dynamics (as Shadow Garden tries to understand these new forces), unexpected comedy, high-stakes drama, and the constant, mortifying upstaging of a would-be puppet master by a hero who just wants a day off.
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Chapter 1 - The Unforeseen Intersection of Mundanity and Shadow

The air in the Royal Capital of Midgar crackled, not with the usual ambient magic, but with a tension that was almost palpable. Tonight, however, the source wasn't the clandestine machinations of the Cult of Diablos, nor the subtle power plays of oblivious nobles. Tonight, it was all about Shadow Garden.

Or rather, it was about their master, Shadow.

Cid Kagenou, known to the world as a profoundly mediocre, background-character-aspirant student, was currently reveling in his true calling. Cloaked in his eponymous jet-black, slime-molded bodysuit, he stood atop the Grand Cathedral, a silhouette against the twin moons. Below, his Seven Shadows, or at least the ones currently available, were dismantling a particularly stubborn Cult cell.

Alpha, her blonde hair like spun moonlight, moved with lethal grace, her blade a silver whisper that reaped lives. Beta, her silver hair catching the faint light, documented everything with unnerving precision, even as she deflected spells with contemptuous ease. Gamma, brilliant but clumsy, was coordinating logistics from a safe distance, her commands surprisingly effective despite her occasional stumbles over her own feet. Delta, a whirlwind of feral instinct and overwhelming power, was… well, Delta was having fun turning cultists into abstract art. Epsilon, with her meticulously crafted slime-enhanced physique, executed flawless, high-impact maneuvers that were as devastating as they were aesthetically pleasing. Zeta, the cat-eared beastkin, was a blur of silent takedowns in the periphery. And Eta, the resident researcher, was likely already back at their base, analyzing some arcane artifact pilfered mid-battle.

Cid sighed internally, a dramatic, theatrical sigh that no one could hear. Ah, another flawless performance. The Cult trembles, the world remains ignorant of its true saviors, and I, Shadow, the Eminence in Shadow, orchestrate it all from the velvet darkness. Perfection.

He raised a hand, fingers splayed, as if conducting an invisible orchestra of chaos. "The time of reckoning is nigh," he intoned, his voice altered by his mask to a deep, resonant baritone that sent shivers down the spines of even his own devoted followers. "Let the symphony of destruction play its final, mournful chord for these fools."

Below, a particularly resilient cultist, wreathed in desperate, corrupted mana, shrieked, "You cannot stop the awakening! The blood moon calls! He will—"

Before the cultist could finish, Shadow moved. He didn't leap; he simply wasn't on the cathedral roof anymore. He appeared before the cultist, a flicker in the darkness, his hand outstretched.

"Atomic," he whispered, a word laden with unimaginable power.

A sphere of impossibly dense, violet-black energy coalesced in his palm, not large, but radiating a pressure that made the very stones of Midgar groan. It wasn't the city-destroying "I Am Atomic" he sometimes unleashed for maximum dramatic effect. This was a more… intimate version. Personal.

"I..." Shadow began, savoring the moment.

Then, the world tore.

Not in a metaphorical sense. The very fabric of reality above Midgar seemed to rip open like cheap cloth. A jagged, incandescent fissure, pulsing with colors that defied description and energies that made Shadow's own potent magic feel like a child's sparkler, yawned into existence. It wasn't a gate, not a portal formed by any magic he knew. It was a raw, violent wound in the sky.

Goosebumps erupted on Cid's skin beneath his slime suit – not from fear, but from sheer, unadulterated excitement. What is THIS? Some new Cult superweapon? A trans-dimensional entity? Oh, this is rich! This is the kind of unpredictable plot twist that makes being an Eminence in Shadow so utterly thrilling!

Alpha, Beta, and the others instantly ceased their cleanup. Their heads snapped upwards, weapons ready, their faces – usually composed or fiercely focused – etched with genuine shock and alarm. This was beyond any Cult activity they had ever encountered.

"Lord Shadow!" Alpha called, her voice tight with concern, appearing beside him in a flash. "What is this anomaly?"

"An unforeseen variable," Shadow intoned, his voice betraying none of his inner glee. "A new darkness seeks to cast its pall upon this world. Or perhaps… something else entirely." He tilted his head, feigning deep contemplation. Yes, that sounds suitably enigmatic!

The rift pulsed violently, and then, with a sound like a cosmic giant tearing a phonebook in half, something shot out of it. Or rather, two somethings.

They plummeted towards the Royal Capital, two distinct streaks against the violated sky. One was larger, metallic, and trailing smoke. The other was smaller, almost comically plain.

They crashed.

The larger, metallic one impacted the Royal Academy grounds with a deafening explosion, shaking the entire city. Dust, debris, and screams erupted from that direction.

The smaller one, however, landed with a surprisingly less catastrophic thud in the very plaza where Shadow Garden had been mopping up the Cult remnants. A small crater, yes, but nothing like the other impact.

Shadow, with Alpha at his side, was there in an instant, curious. The dust settled, revealing a figure groaning as he sat up, rubbing the back of his perfectly bald, shiny head. He wore a rather ridiculous yellow jumpsuit with a white cape, red gloves, and red boots.

"Man, that was a weird dimensional hiccup," the bald man muttered, looking around with a blank, almost bored expression. "Saitama-sensei! Are you alright?" A new voice, metallic and urgent. From the larger crash site, a figure was streaking towards them – a young man, blond, with piercing yellow eyes and entirely mechanical limbs, glowing with blue energy. He landed gracefully beside the bald man, scanners whirring. "Minimal damage to your person, Sensei. The trans-dimensional passage was… turbulent."

The bald man, Saitama, finally looked up. He saw Shadow, Alpha, and the other imposing figures in black emerging from the shadows. He blinked. "Oh. Hey. You guys having some kind of costume party? Sorry to crash it. Is this Z-City? Kinda looks different."

Alpha tensed, her hand on her sword. "Identify yourselves, intruders! How did you breach the dimensional barrier?"

Saitama scratched his cheek. "Dimensional barrier? Oh, you mean that flashy rip in the sky? Dunno. One minute I was trying to get Genos to help me find a coupon for king crab, the next, WHOOSH, and here we are. So, uh, where's 'here' exactly?"

Genos, the cyborg, stepped forward, his arm cannon whirring as it charged. "Sensei, these individuals radiate significant, albeit unfamiliar, energy signatures. They appear hostile. Standard threat assessment protocol advises caution."

Cid, as Shadow, felt a thrill unlike any other. This was it! This was the REAL deal! Not some manufactured crisis, but a genuine, unexpected, powerful new element injected into his carefully crafted narrative! These two… the bald one seemed utterly unassuming, almost pathetically so. A perfect disguise for a hidden powerhouse! And the cyborg radiated tangible power.

Yesss! Cid screamed internally. This is the kind of shocking development that keeps an Eminence on his toes! My story just got an upgrade! Are they allies? Foes? Pawns in a greater game that I, of course, already understand? The possibilities are endless!

Outwardly, Shadow remained the epitome of cool, enigmatic menace. "You have trespassed into a domain under my purview," he declared, his voice resonating with an authority that brooked no argument. "Your arrival was… uninvited. And yet," he paused, letting the silence stretch, "curious."

Saitama just looked confused. "Purview? Domain? Man, you talk fancy. Look, we're just trying to figure out where we are and how to get back. Maybe you know a way? Or, you know, where the nearest supermarket is? I'm kinda craving napa cabbage hot pot."

Alpha looked utterly scandalized by the mundane request in the face of such an imposing figure as Lord Shadow. Beta was furiously scribbling notes, her eyes wide with a mixture of academic curiosity and apprehension. Delta was just growling, tail lashing, eager for a fight with these new, strange-smelling people.

"Silence!" Alpha snapped, her killing intent flaring. "You will show Lord Shadow the respect he is due!"

Saitama blinked at her. "Respect? Okay. Uh, nice outfit, Mr. Shadow. Very… shadowy." He then turned to Genos. "Hey Genos, do you think they sell kombu here? A good dashi is key."

Genos, ever loyal, replied, "I will scan for local marketplaces once the immediate threat is neutralized, Sensei." His cannon glowed brighter.

Cid fought back a maniacal grin. This was comedy gold! The sheer incongruity! This bald man, so utterly devoid of presence, yet his cyborg companion was clearly a high-tier fighter. And his nonchalance in the face of Shadow Garden, the most feared clandestine organization in the world (that no one knew existed, which was the point!), was either supreme ignorance or supreme confidence.

Cid chose to believe the latter, for the sake of his narrative.

"Your nonchalance is… intriguing," Shadow said, taking a slow, deliberate step forward. The ambient magic around him seemed to darken, coalesce. The very air grew heavy. This was it, the moment to establish dominance, to gauge these newcomers. "Perhaps a demonstration is in order to illustrate the gravity of your situation."

He raised his hand, the same one that had been about to unleash "Atomic" on the cultist. The violet-black energy began to swirl once more, denser this time, more menacing. The ground beneath them trembled. The remnants of the Cult, those still conscious, whimpered in abject terror. Even Alpha and Beta took an involuntary half-step back from the sheer pressure emanating from their master. This was a level of power they rarely witnessed, reserved for true threats.

Goosebumps prickled the skin of everyone present – Shadow Garden members from awe and reverence, the cultists from terror.

Saitama watched the swirling dark energy with a completely deadpan expression. "Oh, neat party trick. Is that for, like, a light show?" He then looked past Shadow. "Hey, is that a sale banner over there? My eyesight's not great from this distance."

Genos, however, recognized true power when he saw it. His scanners went into overdrive. "Sensei! Extreme energy readings! This individual… his power output is astronomical! Potentially exceeding Dragon-level threats!"

Shadow allowed a small, almost imperceptible smirk to play on his lips beneath the mask. Finally, someone who understands! Though Dragon-level? He underestimates me. But then, everyone does. That's the point.

"Now then," Shadow intoned, the violet energy crackling around his fist, ready to reshape the very landscape. "Shall we begin your… orientation?"

The air was taut, a prelude to an explosion of power that could very well shatter the fragile peace of Midgar, or what little of it remained. Two overpowered beings, from two entirely different dimensions, stood on the precipice of a misunderstanding that could have cataclysmic consequences.

Cid Kagenou had never felt more alive. His harem of powerful beauties was by his side, a shocking new development had unfolded, OP actions were imminent, comedy was already in play, and the drama was thick enough to cut with a knife.

This was going to be his greatest performance yet.

The goosebumps weren't just on his skin anymore; they were a symphony playing in his soul.

The silence stretched, thick and heavy as a shroud. Shadow's fist, wreathed in the condensed power of the abyss, pulsed with a light that seemed to absorb all others. The very shadows around them deepened, stretching and contorting as if alive, drawn to the immense concentration of negative energy. Alpha watched her master, her expression a mixture of fierce pride and unwavering loyalty. Even she, who had witnessed his power countless times, felt a fresh wave of awe. This was the man she had sworn her life to, the one who had saved them all, the one who saw truths others couldn't even comprehend.

Beta's pen flew across her notepad, her silver eyes wide, trying to capture every nuance of the scene. Lord Shadow's mana control is beyond anything previously recorded. The density of this 'Atomic' variant… it's not just destructive power, it's a statement. A declaration of absolute dominance. She even made a quick sketch of Saitama's blank face juxtaposed against Shadow's overwhelming presence, labeling it: 'Study in Contrasting Reactions to Imminent Obliteration.'

Delta, unable to contain herself any longer, let out a low, guttural growl, her claws extending. "Can I… can I fight the shiny one, Boss?" she whined, her tail thumping excitedly against the cobblestones. "He smells… bland! But strong! Like weird jerky!"

Zeta, ever the pragmatist, shifted her weight, ready to intercept any attack from the cyborg. Her senses were screaming at her about the latent power in both newcomers, though the bald one was an enigma – a void where power should be, yet his companion was on high alert because of him.

Epsilon subtly adjusted her slime-padded chest, ensuring her silhouette was perfect even in this tense standoff. Lord Shadow is magnificent. This display… it will surely be recorded in the Shadow Chronicles as a moment of supreme assertion.

Cid, meanwhile, was basking in it. Ah, the adulation! The fear! The sheer dramatic tension! And my Seven Shadows, each playing their part perfectly. Delta, my loyal hound, ever eager. Zeta, my silent sentinel. Epsilon, ever mindful of presentation – a true artist! This bald man… his apparent obliviousness is the most exquisite form of dramatic irony! He must be a master of feigned weakness, a trope I myself employ! Could he be… a fellow Eminence from another world? The thought sent a fresh jolt of exhilaration through him. A rival? A potential ally in the grand tapestry of shadows? The possibilities made his head spin with delight.

Saitama, oblivious to the complex internal monologues and dramatic posturing around him, finally piped up again, "So, about that sale… no one knows? Maybe I should just ask that flashy robot. Hey, robot guy," he called to Genos, "any luck with the local grocery store locations?"

Genos, however, was entirely focused on Shadow. "Sensei, I must advise extreme caution. My analysis indicates this individual, 'Shadow,' possesses energy manipulation capabilities far exceeding any encountered threat, possibly rivaling…" He trailed off, his optical sensors dilating as Shadow subtly increased the pressure of his 'Atomic' fist. "...rivaling even your own latent potential, if unleashed in a focused manner."

Saitama finally looked back at Shadow, his gaze still utterly blank. "Oh. So he's strong? Cool." He paused. "Is he stronger than King?"

Genos faltered. "King-san's abilities are… unique, Sensei. This is raw, quantifiable power. It is… dangerous."

Shadow let a low chuckle escape his lips, a sound like grinding tombstones. "Dangerous? Indeed. For those who stand against the inevitable tide of destiny. For those who disrupt the delicate balance I maintain." He gestured vaguely with his free hand. "This world has its protectors. And its puppeteers. I am… both." And a part-time student with surprisingly decent grades in classical literature, he added internally with a smirk.

He could feel the goosebumps on his own arms under the slime suit, a familiar and welcome sensation. It was the thrill of the performance, the adrenaline of walking the razor's edge between his mundane persona and his true, magnificent self. Tonight, the stage was grander than ever.

Alpha stepped forward slightly, her voice sharp and cold. "You stand before the one who manipulates events from the deepest darkness, who plucks the strings of fate. Your accidental intrusion may have unforeseen consequences. State your intentions, or face the judgment of Shadow!"

Cid internally pumped his fist. Yes, Alpha! Perfect! 'Plucks the strings of fate!' I should use that one myself! My girls truly understand the aesthetic!

Saitama finally seemed to focus a little, perhaps because "judgment" sounded vaguely like "being told off." He sighed, a puff of air that barely disturbed the oppressive atmosphere. "Look, Mr. Shadow, ma'am with the nice sword," he nodded at Alpha, "we don't want any trouble. We just got zapped here by accident. If you can point us to a way back, or maybe just a place that sells eggs on discount, we'll be out of your… uh… shadowy hair."

The sheer, unadulterated mundanity of the request, juxtaposed with the apocalyptic power simmering in Shadow's fist and the deadly readiness of Shadow Garden, created a moment of such profound absurdity that even Cid felt a genuine twitch at the corner of his lips beneath his mask, threatening to break his composure.

This was it. The clash of ultimate power and ultimate nonchalance. The cosmic joke playing out in real-time. And he, Cid Kagenou, was at the center of it, playing the role he was born to play.

"Your ignorance," Shadow finally said, his voice dripping with feigned disappointment, "is either a masterful deception or a truly pitiable state. Regardless…" He tensed his 'Atomic' fist, the violet energy within flaring with a terrifying brilliance, casting stark, dancing shadows across the plaza. "...it will be rectified."

The air hummed, the ground vibrated, and the very stars seemed to dim in deference to the power about to be unleashed. This was the moment of truth. The first move in a game that spanned dimensions.