Kyoto.
Rumble.
A series of explosions sent flames soaring into the sky, reddening half of it. The shock waves swept outward for more than ten miles.
Whoosh.
Landing on the roof of a mansion, Genya and Zenitsu stared at the flames rising in the distance, their expressions full of shock.
After a moment, Genya muttered, "How did they do that? Was it explosives?"
Zenitsu shook his head. "They passed right under our noses. They weren't carrying any explosives!"
Genya's expression grew uncertain. "That guy, Ice, is definitely hiding something from us. The person traveling with him isn't a swordsman from the Demon Slayer Corps at all!"
"Yeah. They just barged into this demon-infested city. What are they even trying to do? They can't possibly be planning to wipe out every demon in the city, can they?"
Zenitsu was just as suspicious.
"Huh?!"
Suddenly, Genya let out a surprised gasp.
Zenitsu hurriedly looked over. The flames blazing in the distance had suddenly darkened. It wasn't that they had gone out. Somehow, the scorching orange-red fire had turned into Black Flame, and it was burning more fiercely by the second!
The two exchanged a glance.
"Have you ever seen black fire like that?" Zenitsu asked.
"Tch!" Genya spat. "I haven't even heard of it!"
On the battlefield.
Watching the swarms of demons all around him get engulfed by his Amaterasu Black Flame, Sasuke's face was cold and impassive.
Haku looked worried. "Will your Dojutsu be able to handle it?"
"This concerns the safety of the Shinobi World. A little strain on my Dojutsu doesn't matter. Once Amaterasu burns a gap in their ranks, we'll charge straight in!"
"Got it!"
Haku nodded and warily surveyed their surroundings.
Beneath Sasuke's mask, his crimson Mangekyo was also scanning the area.
Just as Haku had when