Ring 6 was set in a desolate, moonlit forest where the trees were made of twisted iron and the ground was covered in a thick, unnatural fog. The vibe was "Maximum Angst."
Heimdall was wearing a pair of extra-dark sunglasses. "Match Number Twenty! The Survivor of the Uchiha, Sasuke Uchiha! Versus the master of the Darkness Flame, Hiei!"
The Eye Contact
Sasuke stood with his hand on the hilt of his Kusanagi blade, his cape fluttering in the cold wind. His left eye shifted into the purple ripples of the Rinnegan. "You have a third eye. Interesting. But can it see through the inevitability of your defeat?"
Hiei stood on a high branch, his arms crossed and his sword still sheathed. He let out a cold, sharp laugh. "You talk a lot about fate for a human. I've seen things that would make your little 'sharing-eye' bleed. Don't blink, boy. You might miss your own death."
The Speed of Shadows
The fight didn't start with a bang; it started with a blur. Hiei moved so fast he left afterimages that were literally cutting the air. Sasuke stood his ground, his Sharingan tracking every micro-movement.
CLANG.
Their blades met in the center of the ring. Sparks flew as Hiei's speed clashed with Sasuke's predictive vision.
"Chidori!" Sasuke's hand erupted in lightning, but Hiei used his Afterimage Technique to dodge, appearing behind Sasuke and delivering a kick that sent the Uchiha through three iron trees.
The Clash of Black Flames
Up in the booth, Deadpool was holding a "Team Edgy" foam finger. "It's a fire-fight, tum! But not the fun 'roasting hot dogs' kind! It's the 'my fire is darker than yours' kind!"
Hiei unwrapped the bandages on his right arm, revealing the ornate dragon tattoo. "You think you know fire? I'll show you the flames of the deepest pit! Jaō Ensatsu Kokuryūha!"
A massive, roaring dragon of black spiritual flames erupted from Hiei's arm, consuming everything in its path.
Sasuke didn't move. He closed his right eye, then snapped it open. "Amaterasu!"
The black flames of the Uchiha met the Black Dragon of the Darkness Flame. The two infernos collided, creating a vortex of dark heat that began to erase the iron forest from existence. But Sasuke had an ace up his sleeve. He used his Amenotejikara to instantly swap places with a leaf behind Hiei.
While Hiei was still channeling the dragon, Sasuke appeared at his back with a Chidori-enhanced blade.
"It's over," Sasuke whispered.
He drove the blade through Hiei's shoulder—not a killing blow, but enough to disrupt his spirit flow. The Black Dragon flickered and died. Hiei fell to one knee, gasping, his Jagan eye closing as the strain of the darkness flame took its toll.
"Match Twenty winner... SASUKE UCHIHA!" Heimdall announced, the fog finally starting to lift.
Up in the booth, Deadpool wiped a single, dramatic tear. "The Uchiha takes it! That's 20 winners down, 31 matches to go in Round One, tum! I'm gonna go buy some more bandages, I think I got a papercut just watching that much edge."