Screen 1
The city lights of Asakusa shimmer against the night sky. The streets are alive — music, laughter, steam from noodle carts — and in the middle of it all, Tanjiro Kamado stops dead in his tracks.
His nose twitches.
The scent is unmistakable — cold, ancient, rotten… Muzan Kibutsuji.
Tanjiro's hand trembles as he turns, eyes locking onto a man in a fine suit, carrying a little girl, his wife beside him.
The Demon King.
But Muzan's polite smile falters for half a second.
In his mind, something snarls.
> Muzan (thinking): "What is this… presence inside him? It's not my blood. Not a curse. It feels… wrong."
He narrows his eyes — his senses flicker like static. Normally he can read any demon, any mutation of his blood. But this?
It's like staring into a void.
> Muzan (thinking): "Corrupted. Inhabited. But not mine."
Tanjiro's heartbeat quickens. Venom whispers in his head, low and amused.
> Venom: "He feels me now."
Tanjiro: "He can sense you?"
Venom: "Oh yes. But his body is… interesting. He bends his flesh, changes shapes — male, female, even child. He's a shapeshifter."
Tanjiro: "Body manipulation… so that's how he hides."
Venom: "He thinks he's a god. I think he's just food."
Muzan turns away, smirking — pretending not to notice. The family disappears into the crowd.
Tanjiro exhales, gripping his sword.
> Tanjiro (quietly): "Next time, I won't let you walk away."
---
Screen 2
Later that night, Tanjiro enters Tamayo's hidden clinic. The air smells faintly of wisteria and medicine. Yushiro blocks the doorway, annoyed.
> Yushiro: "Humans aren't welcome here."
Tanjiro: "I'm here to ask for help."
As they talk, Tamayo freezes mid-step. Her eyes widen — her senses awaken.
> Tamayo (thinking): "Two heartbeats. One human, one… ancient. Not demon. Not human. Not from this world."
Venom stirs. The scent of demon cells irritates him.
> Venom (low growl): "They're infected. Like him. But… cleaner."
Tamayo approaches slowly.
> Tamayo: "May I?"
She takes a small blood sample. Her eyes narrow as she studies the pattern under a microscope.
> Tamayo: "Fascinating… no demonic blood, no infection, yet something alive inside your cells. It feeds on adrenaline and oxygen. It's not a parasite — it's a… partner."
Yushiro: "Sounds like a monster to me."
Tamayo: "No. It's older. A perfect organism. A survivor — like us."
Venom speaks directly through Tanjiro, his tone steady.
> Venom: "We mean no harm. Unless someone threatens my host."
Tamayo: "You carry a being of infinite hunger… yet it obeys your will."
Tanjiro: "We made a promise — to use this power only for good."
Venom (softly): "For now."
Yushiro glares, hand near his blade.
> Yushiro: "If you harm Lady Tamayo—"
Venom (grinning): "You'll try. And you'll fail."
Tamayo raises a hand.
Tamayo: "Enough. He's not our enemy… not tonight."
---
Screen 3
The walls shake — a booming laugh echoes outside.
> Susamaru: "Lady Tamayo! Come out! We'll play a game of catch!"
Six Temari balls smash through the courtyard walls.
Round 1 — Opening Barrage
The Temari swirl in deadly spirals. Venom's radar pings before each impact.
> Venom: "She's fast, but the balls scream before they move."
Tanjiro: "Understood."
Tendrils catch two Temari midair and fling them back. The rest bounce harmlessly off Venom's armor.
Result: Zero damage.
---
Round 2 — Close Range
Susamaru leaps forward, grinning, firing another volley.
Venom's armor thickens around Tanjiro's forearms — he smashes one ball apart bare-handed.
> Tanjiro: "Water Breathing, Fourth Form — Striking Tide!"
Venom's tendrils spin with the sword, slicing through air and flesh. Two of Susamaru's arms hit the ground.
> Susamaru: "Fun! You're strong!"
Venom (flatly): "You talk too much."
---
Round 3 — Desperation
Dozens of Temari appear, spinning like meteors.
Venom shields Tanjiro in a dome of black armor — every ball ricochets away.
He fires tendrils outward, grabbing each Temari midflight and throwing them back twice as fast.
The explosions shred Susamaru's limbs.
> Venom–Tanjiro (in unison): "Game over."
---
Round 4 — Finisher
Tanjiro dashes through the dust.
> Tanjiro: "Water Breathing, Tenth Form — Constant Flux!"
Venom merges into the blade — black energy spirals outward.
One clean slash.
Susamaru's head falls before she even blinks.
Venom devours the remains before Muzan's curse activates.
Tamayo and Yushiro stare in stunned silence.
> Yushiro: "I've never seen anything like that."
Tamayo: "Nor have I… a demon that devours demons. A monster that saves humans."
Tanjiro exhales, eyes calm.
> Tanjiro: "Let's move. Muzan won't stay quiet after this."
Venom's grin curls inside his voice.
Venom: "Good. I'm hungry."
To be continued...