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Chapter 42 - Chapter 43: Cultural Festival – Chuunibyou Battle Theater, Rias vs. Sona Cosplay Duel, and the Mystery of the Mascot That Bites

> "We wanted fun, food, and memories.

What we got was magical monologues, weaponized cosplay, and a school mascot that may or may not be a cryptid."

— Kuoh Festival Committee Report (burned after submission)

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[Kuoh Academy – Cultural Festival Day One]

The school was decorated with lights, streamers, food stalls… and a massive floating banner that read:

> "Witness the Shadows Rise – Class 2-B Presents: Battle Theater of Destiny!"

MC (in full chuunibyou mode):

> "Let the fools have their takoyaki.

We offer... immersion."

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[Scene: Battle Theater Arena]

Students gathered to watch what they thought would be a dramatic play.

Instead, they witnessed:

Latin chanting

Fog machines spewing glitter

MC descending from the ceiling in a black cloak shouting:

> "THE KING IN SHADOW RETURNS FROM THE VOID BETWEEN PANELS!"

Issei (sobbing):

> "This is the coolest thing I've ever hated."

Akeno (excited):

> "He even added dramatic thunder noises that play only when he talks."

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[Meanwhile: Rias vs. Sona – Cosplay Duel Begins]

Rias: Wears full crimson battle dress, dragon motifs, confident smirk.

Sona: Wears tactical glasses, cloak of logic, and thigh-high boots of passive-aggression.

They meet on the festival stage.

Both declare:

> "I am not competing."

While absolutely competing.

Judges:

A confused teacher

A cat

That one vampire transfer student who just wanted popcorn

Winner?

Nobody knows.

They're still arguing in Latin.

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[Side Plot: The Mascot That Bites]

A student in a poorly constructed mascot suit labeled "KUU-CHAN" went rogue.

Started biting people.

No one knew who was inside.

Rumors say:

It's a demon sealed in the drama budget.

It's Issei's unresolved puberty.

It's MC's summoned beast of chaos.

MC (smiling subtly):

> "I know not what you mean. Kuu-chan merely hungers."

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[Late Festival – The Firework Duel Begins]

Rias and Sona accidentally (definitely intentionally) activate two magical fireworks systems.

They create:

A crimson phoenix made of sparkles

A blue glaive that slices through the sky

They clash overhead.

MC stands beneath both.

A spotlight hits him.

He raises a hand.

Whispers:

> "As expected... balance."

The sky explodes.

Everyone cheers.

Even the mascot bites with reverence.

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[System Notification]

> Trait Gained:

"Festival Director (Lv.1)" – You automatically turn any school event into a climactic arc finale. Bonus points for monologues and explosions.

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[Final Scene – Clean-Up Crew Report]

Kazuma (reading group chat):

> "He made a mascot go feral. Akeno swooned. Rias and Sona dueled with fireworks.

And he ended the day giving free tea to the teachers while talking about fate."

Deadpool:

> "Bro's running an anime inside another anime."

MC (quietly sipping tea):

> "All according to plotline Zeta-13."

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End of Chapter 43: Festival Madness

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