Toshiro's Reiatsu stopped increasing after reaching the mid-level of beyond-Captain-level, no longer rising.
Once everything settled, Toshiro felt the immense power within his body and couldn't help but show a trace of intoxication.
"Finally broke through to the beyond-Captain-level, and even reached the mid-level at that," Toshiro said with satisfaction.
"Hey! Shinigami! What... what's with this form of yours?!" Vargas asked, his voice tinged with panic.
Earlier, Toshiro's strength could already match his. Now, Toshiro's Reiatsu suddenly became stronger than his. Didn't that mean he was completely outmatched? The thought made Vargas begin to feel afraid.
However, Toshiro completely ignored his words. Instead, he gestured with his left hand, creating an ice mirror with his Reiatsu.
Looking at his handsome, dashing, and incredibly cool appearance in the ice mirror, Toshiro couldn't help but smile with satisfaction. "Is this what I'll look like when I grow up? So cool it's unreal!"
Because Hyorinmaru's power was too immense, Toshiro, while at the Captain-level, couldn't fully harness Hyorinmaru's power. His previous Bankai was also immature.
But after breaking through to the beyond-Captain-level, Toshiro could now unleash his true Bankai.
As for why his body suddenly grew... this was just a side effect of 'aging' after achieving full Bankai.
After achieving full Bankai, Toshiro's body instinctively and rapidly matures to adapt to the intensity of Bankai's power, temporarily possessing an adult's physique.
"Unfortunately, the 'aging' side effect only lasts for a limited time," Toshiro said with some regret.
Although Toshiro in the original work didn't particularly like this form, the current Toshiro was quite pleased.
"Hey! Shinigami! Answer me! What is this form?!" Vargas blustered, trying to sound tough.
"Hey, Vargas, you're really annoying, you know!" Toshiro, interrupted while admiring his own handsome face, said impatiently.
Then, Toshiro casually threw the Reiatsu-created ice mirror like a projectile at Vargas.
"Hmph!"
Vargas snorted coldly and swatted at the ice mirror with a claw.
"What a foolish guy," Toshiro couldn't help but mock, watching Vargas directly touch the ice mirror with his claw.
Bang!
Vargas shattered the ice mirror with his claw.
However, Vargas didn't look happy. Instead, his expression suddenly changed drastically.
Crack!
Vargas's left claw, which had touched the ice mirror, instantly froze.
Unlike before, this time, no matter how hard Vargas tried, he couldn't dispel the ice on his left claw. Moreover, he couldn't even sense his left claw anymore, as if it didn't exist.
"What... what is this?!" Vargas said, somewhat terrified.
"After achieving full Bankai, my ice can completely freeze the functions of any substance. So, the function of your left claw has been completely frozen by me," Toshiro stated indifferently.
Then, Toshiro casually stepped forward, his figure instantly vanishing.
Although the ice wings on his back had disappeared, Toshiro's speed was now even faster than before.
"Swish!"
Toshiro's figure appeared in front of Vargas, then slashed at him with a single-handed strike.
Vargas immediately blocked horizontally with his staff.
Clang!
Vargas immediately felt a tremendous force. His knees bent, nearly forcing him to kneel.
Urgh!
Vargas used all his strength, his entire body creaking, yet he still couldn't match Toshiro. His knees slowly continued to bend downward.
Crack!
At that moment, Vargas's weapon suddenly began to freeze, the ice spreading towards his still-intact right claw.
Vargas's pupils constricted. He hastily abandoned his weapon and retreated.
"Vargas, ah, no matter what, I broke through partly thanks to you. So, to express my gratitude, I'll hold a grand funeral for you!" Toshiro said, looking at Vargas.
Then, ice-blue light shimmered behind Toshiro as the massive ice wings reappeared. After achieving full Bankai, Toshiro could now control the appearance and disappearance of the ice wings at will.
Next, Toshiro flapped his wings and soared directly into the sky.
Flying high, Toshiro looked down at Vargas from above, then pointed his sword directly at the heavens with both hands.
Softly, he chanted: "Frozen Heaven Hundred Flower Funeral!"
Boom!
A pillar of ice-blue Reiatsu shot into the sky.
Then, within the clouds covering the entire sky due to Toshiro's Weather Subjugation ability, an ice-blue void suddenly appeared, continuously expanding until it enveloped the entire ground below.
On the ground, Vargas suddenly felt a deadly crisis envelop him.
Then, countless snowflakes fell from the sky like an avalanche.
In his panic, Vargas directly fired a Cero at the snowflakes falling from the sky.
Boom!
The white pillar of Reiatsu blasted towards the snow falling from the ice-blue void.
Crack!
Vargas's Cero pillar was instantly frozen into an ice pillar.
Then, countless snowflakes drifted down onto Vargas.
Crack! Crack! Crack!
One after another, ice flowers bloomed wildly on the ground and on Vargas's body.
Before long, Vargas was completely covered in ice flowers, like a crystal-carved Christmas tree.
"So, Vargas, are you satisfied with your funeral?" Toshiro asked indifferently, looking at Vargas, whose life force had already been extinguished within the ice flowers.
"It seems you can't answer. Well then, sayonara. Rest here forever," Toshiro said, then flapped the ice wings on his back and flew towards the distant camp of the Hueco Mundo Expeditionary Force, not bothering with Vargas frozen within the ice flowers anymore.
Frozen Heaven Hundred Flower Funeral… a hundred blossoms bloom, and the enemy's life ends. So, Vargas was deader than dead.
In the original work, when Harribel was frozen, she didn't die immediately only because the Reiatsu gap between her and the original Toshiro was too vast. Being able to freeze her was already impressive.
Now, Toshiro's Reiatsu was stronger than Vargas's. Once frozen, Vargas had no chance of survival.
As for these ice flowers, they might remain here forever, becoming a unique landmark in Hueco Mundo.
Inside the camp of the Hueco Mundo Expeditionary Force.
Toshiro descended from the sky and retracted his ice wings.
Looking around carefully, Toshiro found the entire camp empty and in complete disarray, utterly destroyed.
Although the earlier battle was several miles away from the camp, it was still inevitably affected.