The night over Kuoh was thick with unease. Clouds smothered the moon, and the streets were drenched in silence too heavy to be natural.
A ripple cut through the fabric of reality. Like glass shattering, a violet fissure opened midair, spilling distorted light. From it stepped a young man, ordinary in form but cloaked in an aura that screamed alien. His very presence gnawed at the air, and every weak spirit or lurking familiar disintegrated in silence.
The stranger breathed in deeply. "…So this is DxD's world. The Red Dragon Emperor should be here. All I need to do is devour him, and all of DxD resident and then this world and all the beautiful women here is mine HAHAHAHAHA."
He walked casually down the empty street, eyes scanning as though this world were a hunting ground prepared for him. His tone was confident, almost smug—until a voice rang out.
"Wow. That's one hell of a monologue for someone who just arrived. You practicing for a villain audition or something?"
The man froze. From the roof of a nearby convenience store, a figure crouched. Long coat fluttering in the breeze, posture loose, almost playful.
Jay.
He leapt down, landing with perfect grace, and for once… his face was bare. No mask.
The intruder's eyes widened instantly. His body stiffened as recognition and confusion warred across his face. "…Y-you…"
Jay smirked. "What's wrong? Do I have something on my face?"
The man's breath hitched. "Gojo…? Gojo Satoru?!"
Jay blinked, then laughed—a low, amused chuckle. "Gojo? That's a new one. Sorry, buddy, you'll have to spell it out. I don't keep track of every celebrity lookalike rumor."
The intruder stepped closer, disbelief twisting his features. "No… no, it can't be. Gojo's not this tall. He's not this built either… and that face—dangerous. Too sharp. Gojo's a smug bastard, sure, but he doesn't look like that."
His eyes flickered, half wary, half… enthralled. "What are you?"
Jay tilted his head, feigning innocence. "I dunno, what am I? Some Goko? Gugu? Gojimbo?" He tapped his chin playfully. "You're the one throwing names around."
The man clenched his fists. His voice dropped. "…If you're not Gojo, then why do you have his eye? Why here?!"
Jay's smile softened, though his eyes stayed razor sharp. "Better question—why do you know who Gojo is in this world? People around here don't exactly read Jump every weekend."
The man flinched.
Jay caught it instantly, grin widening. "Ah… bingo. You're not from around here, are you? You know stories you shouldn't. Which means…" He snapped his fingers, almost theatrically. "…you're just like me."
The air thickened, the weight of that playful tone carrying a blade's edge.
The intruder's expression twisted into something between fury and excitement. "Then you understand. This world is nothing but a stage. Its power is food for the taking. And the Red Dragon Emperor is the first course."
Jay chuckled, scratching his cheek. "Hate to break it to you, pal, but the menu's off-limits. Besides…" He stepped closer, a dangerous aura rolling off him in waves.
The intruder sneered, black aura writhing like a storm. "Then you'll be the appetizer."
Jay just chuckled, brushing imaginary dust from his coat. "Appetizer, main course, dessert—man, you sound hungrier than a college student during exam week." He tilted his head, grin playful but eyes sharp. "But here's the thing… sorry, pal. I've got a mission here. And that mission says nobody gets to snatch power from this world by force. Hehe."
The intruder narrowed his eyes. "Mission…?"
Jay shrugged. "Yup. And if you wanna keep chewing your way through this place, you're breaking the rules. Which means…" He raised his hand, energy flickering to life. "…I gotta stop you. Think of me as the world's really handsome bouncer."
The air grew heavier, their auras colliding, sparks snapping in the space between them.
The intruder's smile curved into something vicious. "Then I'll devour you first."
Jay smirked, slipping into stance. "Heh. Try it."
The ground split as they lunged, and the night lit up with the force of their clash.
The air in Kuoh shuddered under the weight of two auras colliding. Cracks spread across the pavement, windows spider-webbed, and every shadow trembled as the intruder's devouring presence threatened to consume the very fabric of the city.
Jay's eyes flicked around—houses, streets, the familiar territory that would be reduced to rubble if the clash continued here. His lips quirked into a smile, playful but sharp.
"Can't have this little spat turning into a demolition derby," he said. "Sorry, pal, field trip time."
Before the Devourer could react, Jay's hand cut through the air. Space itself folded like paper, swallowing them both in an instant.
—
They reappeared in a vast void-realm. A fabricated dimension stretched endlessly, skies dyed violet, ground crystalline and humming with energy. Gravity here was dense, crushing, the air saturated with raw magic thick enough to choke.
The fabricated dimension quaked under the pressure of two titanic presences. The crystalline ground cracked, releasing waves of unstable magic with every step Jay and the Devourer took toward one another.
The Devourer sneered, his hands raised. "This place is rich. The air itself is fuel." His skin rippled as black sigils crawled across his arms, his aura distorting. "Everything here will become mine!"
He thrust out his palms. A torrent of energy ripped free—twisting firestorms, crackling lightning spears, jagged ice, even fragments of Destruction itself he had stolen from Jay's earlier attack. The attacks bent unnaturally midair, devouring each other as they merged into a single chaotic beam aimed straight at Jay.
Jay tilted his head, one hand in his pocket. "You eat too fast. Ever heard of chewing?"
He raised his other hand lazily and simply swiped. The chaotic beam shredded apart like wet paper, fragments of energy dissolving into harmless motes.
The Devourer's eyes widened. "What—?!"
Jay smirked, stepping forward. "You've got power, sure. But you're just stuffing your face with scraps. Power without refinement…" His gaze sharpened. "…is garbage."
The Devourer snarled, lunging forward. He materialized a blade of condensed void energy and swung with feral precision. The ground split, sending shockwaves through the crystalline terrain.
Jay caught the blade with two fingers. Sparks screamed, the void-edge straining against his grip—but Jay's fingers didn't budge.
"Cute toy." He flicked his hand. The blade shattered like glass, exploding into black fragments.
The Devourer staggered, then roared in frustration. He expanded his core—his chest splitting open into a swirling vortex of devouring light. Reality itself bent inward, pulling debris, shattered stone, even magic residue into its maw. The gravitational pull dragged at Jay's coat, tugged at his body.
The Devourer's grin returned, manic. "I'll consume everything you are! Your strength, your aura, your existence!"
He lunged again, this time his vortex pulling directly at Jay's essence. The dimension screamed under the strain, its skies warping like a black hole had bloomed at its center.
Jay's smile faded—not fear, but a thin, dangerous amusement. He let himself be pulled closer, boots grinding sparks against the crystalline ground. "Oh? You want a taste?"
He raised his hand, letting a pulse of his raw essence—Anos's destructive might, Rimuru's infinite analysis, Mori Jin's martial instinct—flare out like a heartbeat. The Devourer's vortex seized it, pulling it into his core.
For a moment, the Devourer looked triumphant. Then his expression twisted in horror.
Inside the core, the stolen fragment exploded. It didn't empower him—it tore him apart from within. His body convulsed, black blood spraying from his lips. "Wh-what… what did you—?!"
Jay's grin returned, sharper than a knife. "Hehe. Not everything on the menu's good for you."
The Devourer screamed and forced the unstable energy down, stabilizing his body. His eyes were wild now, desperate. He charged again, fists wrapped in raw, unstable magic. Each punch shattered the ground, leaving craters that bled with devoured light.
Jay met him head-on. His fist blurred, meeting the Devourer's strikes in rapid succession. Each collision detonated like artillery fire, shockwaves tearing through the pocket dimension.
For the first time, Jay's playful expression shifted into something focused. His movements sharpened, weaving martial mastery into every counter. A palm strike to the ribs, an elbow to the jaw, a low kick that bent the Devourer's leg at an unnatural angle before it healed instantly.
Still, the Devourer laughed through the blood. "Every blow—feeding me—more!"
But Jay leaned close during their grapple, voice low and mocking. "You sure about that? You don't look like you're getting stronger. You look like you're choking."
The Devourer's grin faltered. His system's prompts flickered wildly in his mind, warnings of unstable assimilation, rejected data, and corrupted pathways.
Jay shoved him back with casual strength, dusting off his coat. "Alright, game's over. I've tested enough."
The Devourer froze, instincts screaming. He knew—something was coming.
Jay raised his hand.
The sky tore apart. Behind him, shadows congealed into towering black spires. Castle Delzégade rose, its oppressive silhouette blotting out the violet heavens. Every wall radiated absolute domination, the kind that made even gods kneel.
The Devourer's bravado collapsed. His knees buckled, terror etched into his face. "…No… that's… that's not from this world—"
Jay smirked, pulling forth a blade from the air itself. A sword blacker than void, yet sharper than truth. Venuzdonoa. The sword that denied all things.
The Devourer's system screamed alarms. His voice broke into panic. "That—no, that's impossible! That sword shouldn't exist here! It can erase me—"
Jay's tone was calm, almost gentle. "Erase you? Nah. I'll just… cut you out. Think of it as cleaning up." He tilted his head, playful grin flashing one last time. "Judgment Cut."
He moved.
The dimension went silent.
No arc of light. No sound. No scream.
The Devourer was simply gone. Erased, down to the last particle of existence.
Jay twirled Venuzdonoa once before dismissing it, the weapon dissolving back into nothing. Behind him, Delzégade loomed for a breath longer, then melted away into shadow.
He reached into his coat pocket, drew out the full face mask, and slid it on. His dangerous aura vanished, swallowed back into anonymity.
"Mission complete," he murmured softly. "Now then… back to business."
And with that, the void dimension folded in on itself, leaving not a single trace of predator or prey. Only Jay walked away.