KNY- Mugen Train (Unknown Slayer)

The night air around the Mugen Train is filled with smoke, shattered trees, and the distant roar of battle.

The train has already been derailed. Hundreds of passengers have survived, but the battle is far from over.

In a clearing beside the ruined train, Kyojuro Rengoku stands battered and bleeding, his Flame Nichirin sword still firmly in his hand. Tanjiro lies nearby, desperately trying to rise. Inosuke is injured, while Zenitsu and Nezuko struggle to protect the others.

Standing before Rengoku is a demon whose presence makes the entire battlefield tremble.

Akaza.

The Upper Rank Three demon suddenly lunges forward.

Akaza: "Become a demon, Rengoku. Your strength deserves to exist forever."

Rengoku: "I will never abandon my humanity!"

Akaza's fist drives toward Rengoku's chest.

But before the fatal blow can land—

BOOM!

A strange shockwave tears across the battlefield.

Akaza suddenly stops.

Everyone turns toward the source of the disturbance.

Someone is standing between Akaza and Rengoku.

Tanjiro's eyes widen.

Tanjiro: "Who... are you?"

Inosuke grips his swords.

Inosuke: "HEY! Where did this guy come from?!"

Zenitsu stares in disbelief.

Zenitsu: "W-Wait... are they human?!"

Nezuko cautiously steps forward.

Rengoku raises his head, his expression changing from exhaustion to surprise.

Rengoku: "You arrived at quite the critical moment!"

Akaza slowly lowers his fist and looks directly at you.

Akaza: "Interesting..."

His smile widens.

Akaza: "You intend to stand between me and my opponent?"

The wind suddenly becomes still.

Everyone waits to see what you will do.

The battle for the Mugen Train has just changed.