Ryūjin Jakka—or rather, the power of a Zanpakutō—possessed a power that absolutely countered Spirits. The wounds left by its flames could not heal through their own power. The flames would keep eating inward through the wounds, burning everything they were.
"Your origins seem rather interesting. So afraid of a Zanpakutō, and looking like this... this world, heh."
Uchiha Gen spoke calmly, steadily drawing closer as flames rose around him.
Seeing Uchiha Gen approach, the Shinigami went completely berserk. Black mist exploded around it, its enormous body swelled abruptly, and countless tendrils sprouted all over it, sweeping in every direction as it tried to break out of Kaka Jūmanokushi.
In response, Uchiha Gen merely tightened his grip on the hilt. Flames gathered along the blade as he unleashed Fuzan. A blade of fire, condensed to the utmost, instantly tore through the air and pierced straight through the hollow void in the Shinigami's chest.
Flames poured through the hollow into the core of its spiritual body, and its pitch-black form began burning from within.
The black mist continually vaporized and dispersed. More and more cracks spread across its deathly white mask, and its torso was incinerated bit by bit by the intense heat.
It struggled and writhed madly, but the walls of fire held it firmly trapped, leaving nowhere to escape.
Watching the Shinigami struggle before him, Uchiha Gen had a sudden inspiration. He curled his hand around empty air, and a long, straight purple blade instantly appeared in his grasp.
The Demon Blade Thousand Blades!
Ever since Ryūjin Jakka appeared, Uchiha Gen had never used this blade again.
But that did not mean the blade was completely useless.
An evil spirit dwelled within the Demon Blade, after all.
Holding the Demon Blade Thousand Blades, Uchiha Gen watched the constantly struggling Shinigami.