This Old Man is crazy!

Hiro's Zanpakuto spun into Ruyi Bang and Hiro held it on his shoulder, growing it to a pillar size. He looked at the old man and grinned "Don't die on me, old man!" as he spun Sun Wu off his shoulder and smashed it down on the old man.

The old man swung up and collided with Sun Wu, exploding into a mass of flames. Sun Wu shrank and Hiro dashed forward, spinning it in his hands before thrusting forward and extending into the old man's stomach, who quickly blocked with the flat of his blade but was still sent flying.

Hiro stuck Sun Wu into the ground and vaulted after the old man, swinging Sun over his head down at the old man again, smashing against his blade and sending him crashing down into the ground.

Hiro landed on the ground not too far away and the old man got up, rubbing his neck and sighing "These damn bones..." Hiro laughed and dashed forward with a crazy look in his eyes, the old man jumped over a swing and slashed down at Hiro's head.

Hiro let go and spun to the side, catching Sun Wu with his hand behind his back and extending it at the old man, hitting him in the side.

The old man slid on the ground before dashing forward and said "Taimatsu!" as he swung out, sending a massive wave of flames directly at Hiro, who chuckled and dashed forward, spinning Sun Wu in front of him, blowing wind at the flames.

Hiro blasted through the wave of flames and smashed Sun Wu into the ground, shooting into the sky before picking up the staff and enlarging it to be as big as the tower before smashing it down. The old man looked at the giant red pillar falling on him and said "Zanka no Taichi, Bankai."

All the flames disappeared and receded into the blade as the air itself started to burn and an immense Reiatsu fell on the Soul Society. The old man slashed up and bounced Sun Wu back, much to Hiro's shock.

It was only 60% but still...

This old man is crazy!

Hiro grinned "Cool!" he returned Sun Wu to normal and thrusted into the air "Pillar of Heaven!" the clouds parted and a massive red pillar peeked from the sky, falling for the Soul Society. Hiro looked at it and his grin fell as he said "Fuck."

Hiro waved and dispelled the attack, much to everyone's confusion. First they see a giant pillar much bigger than the Soul Society coming down to kill them all, then it disappears.

Hiro looked at the old man and frowned as he landed on the ground. He knocked Sun Wu on the ground and said "Heaven's Armory, Bankai." an array of weapons appeared behind Hiro and he let go of Ruyi Bang grabbing Poseidon's Trident only.

The Armory doors slid shut, looking like Japanese doors, before becoming illusory.

Hiro spun the shaft of the trident, spinning the tips in a circle. The old man looked at him and said "Quite the attack." Hiro said with a frown "I got carried away, my apologies." the old man was silent and held his sword up.

Hiro gripped the trident and narrowed his eyes, the old man slashed down and Hiro thrusted forward "Tenchi Kaijin/Wrath of the sea!" a massive pillar of water and a slash of concentrated flames collided and exploded, blasting the duo away.

Hot steam flowed from the collision point, flooding into the Seireitei and completely taking away any visibility outside, there was so much steam, it even seeped into the buildings slightly and started overflowing into the rest of the Soul Society.

Hiro returned his Zanpakuto to normal and jumped into the air, leaving the scene. The old man wasn't dead, and he couldn't see. He had to make sure Yami was okay. He focused his eyes and saw a blue flame, he flew towards it and picked up the confused kid saying "Hey." Yami said "Daddy! What happened?"

Hiro said "Nothing really, I fought the old man." Yami said "Was he strong?" Hiro chuckled "Strong. But not as strong as daddy!" Yami smiled and returned to Hiro's shoulder.

Hiro frowned at all the smoke, but alas...

[Congratulations! You've completed Hidden Quest [Defeat Yamamoto!] Reward: Bajiao Shan!]

Hiro looked at the Mythological War Fan in his hand, it was capable of creating cyclones and wind storms with a single flap. He scratched his head, he wouldn't call that defeating Yamamoto to be honest, but he'll take what he can get.

He flapped the fan and blew all the steam away before releasing the fan to the Bankai armory. Basically, he could use all the weapons normally, but his Shikai & Bankai would give him special abilities for each one, like the 'Pillar of Heaven'.

Otherwise, he could use them all the same as their powers are normally. The Bankai powered them up with special abilities he couldn't use without it, that's the simplest way to describe it.

So normally how a Shinigami would have one or two abilities with their Bankai, he had one or two for every weapon he had. He had like 7 of them with different elements, needless to say, he was pretty OP.

The steam cleared as fast as it came, leaving everyone stunned and confused, yet again.

Yamamoto coughed and returned his Zanpakuto to it's original state before sighing "These kids nowadays..." he looked on the ground and there was a bottle of green liquid and a note that said 'You're great Old man! Next time we should fight somewhere else! BTW, this is a Healing Potion. -Cheeky Youngster.'

Yamamoto sighed again and drank the potion, instantly feeling better than before then fought. He didn't take Hiro to be the type of person to poison someone and he was right. Plus, he had the feeling that Hiro held back his strength. He was 85% sure that if Hiro went at 100% he would be dead.

He wasn't wrong... sort of.

The fire from Yamamoto's Bankai was so hot that even Hiro couldn't stand there and take it. Hiro could kill him with all sorts of Magic, etc. but that wouldn't make Hiro feel proud of his win. If he was going to kill Yamamoto, unless it was last resort, he would use his Bankai powers.

Currently, Hiro had the means to stall Yamamoto until he burned himself but to kill him... It was basically impossible without stalling him. His body and Zanpakuto burned at around 15,000,000 degrees while he was using his Bankai.

Maybe later, but right now he couldn't stand in the Sun. Forget about the core of the Sun which is around 27 million degrees, he couldn't handle even the outer layer which is around 8-10 thousand degrees.

Maybe Zerotwo could, but he could not.

Yamamoto was burning at almost the heat from the core of the Sun, not ideal for the Oni boy. Plus, Hiro didn't want to kill Yamamoto anyway, so there was no need to fight anymore except for enjoyment, which Yamamoto probably wouldn't do.

Hiro took the W and left knowing that another serious fight would probably be impossible.

Hiro was actually upset that it ended so fast, but Yamamoto wasn't able to keep going in his Bankai for too long or he would die. Therefore, Hiro was helpless. It was tragic but necessary to retreat before the old man risks it all on a 'friendly' spar.

Plus, Yami was with him. If something happened to Yami, even the entire universe full of lives wasn't enough to sate Hiro's anger.

So, retreat with a victory.

That's a good strategy.

Hiro jumped to a building and watched the events take place, sitting down and eating candies with Yami, saying "Don't tell your mother we had this much. She'll kill me." Yami gave him a thumbs up and continued stuffing his cheeks with the candies. Hiro smiled and ruffled his hair.