Screen 1 — Flame Training
Rengoku's camp burns with intensity.
Each swing of his flaming blade sends heat rippling through the air as Tanjiro trains relentlessly, Venom's tendrils bracing his body through exhaustion.
> Rengoku: "Your fire burns bright — but never forget compassion."
Venom: "He won't. We burn together."
Tanjiro nods, sweat steaming off his skin in the orange glow of the bonfire.
---
Screen 2 — The Sound of Speed
Tengen Uzui's drills are a blur of rhythm and flash.
Drums boom, dust bursts with every strike.
Venom matches each beat perfectly, predicting motion before it happens.
> Tengen: "You've got flashy instincts now!"
Venom: "We prefer 'effective.'"
Tengen laughs — even he can't argue with results.
---
Screen 3 — Mist and Movement
Muichiro moves like vapor, fading and reappearing between strikes.
Venom observes every shift in airflow, replicating his unpredictable tempo.
> Muichiro: "Good. You're learning."
Venom: "Yes. Efficient style."
Mist and symbiote—two forms of adaptation blending seamlessly.
---
Screen 4 — Love and Agility
Mitsuri's training is softer, but relentless.
She moves like silk — graceful, untouchable.
Venom adjusts Tanjiro's muscle rhythm, enhancing flexibility until he mirrors her movements perfectly.
> Mitsuri: "You're getting faster!"
Venom: "He's trying to impress you."
Tanjiro: "Venom—!"
Mitsuri laughs. Venom hums smugly.
---
Screen 5 — Wind and Stone
Sanemi and Gyomei's training pushes Tanjiro to his limit.
Each blow lands like a thunderclap.
Venom turns to armor, absorbing impact, but Tanjiro pushes him back.
> Tanjiro: "No. Let me feel the pain."
Sanemi: "He fights better when the goo shuts up."
Venom: "We'll remember that."
Every bruise becomes strength.
---
Screen 6 — Evolution
Under the pressure of constant training, Venom evolves.
His biomass pulses with Tanjiro's breathing — perfectly synchronized.
A new technique forms: Symbiotic Breathing Mode.
> Venom: "We don't just protect anymore. We enhance."
Tanjiro: "Then when Muzan comes, we'll end it — together."
Their bond is no longer just host and symbiote — it's unity.
---
Screen 7 — The Fire of Unity
At sunset, all the Hashira gather around Rengoku's fire.
Flames reflect in their eyes — determination, exhaustion, hope.
> Rengoku: "You all have the will to fight on. The next dawn belongs to you."
Venom: "We'll make sure it rises."
Tanjiro bows deeply, surrounded by the strongest warriors in the Corps.
---
Screen 8 — The Awakening
Later that night, Rengoku stands alone before the fire.
He exhales sharply — and the air around him ignites.
> Rengoku: "I have the mark now."
Tanjiro: "I'm so happy for you — you're stronger than ever."
Rengoku: "Thanks… for saving my life."
Venom: "Grateful. You earned this flame."
---
Screen 9 — The Flame Mark
A glowing flame-shaped mark spreads from Rengoku's temple to his neck.
His eyes shine gold; his sword burns pure white.
> Venom: "You're… very cool now."
Rengoku (smiling): "Thank you, my friend."
Even the night air feels warmer when he moves.
---
Screen 10 — The Oath Before War
> Venom: "The mark burns life to make strength. We can cool it, just enough to keep him alive."
Rengoku: "Then I'll burn brighter — and longer."
Tanjiro: "And I'll end Muzan soon."
As dawn breaks, the Hashira prepare.
Tamayo's medicine is delivered, Ubuyashiki meets Muzan — just as in canon.
But this time, Venom's armor flows over Tanjiro the moment Muzan appears.
Muzan freezes, fury burning in his eyes.
> Muzan: "What are you?"
Venom (grinning): "Your extinction."
Be continued...