The Rebirth In Bleach
Itsuki VS Yamamoto's

Yamamoto looked at Itsuki deeply in front of him while Shunsui and Ukitake had just arrived and landed behind Itsuki. Nanao appears after four teachers and students. He was panting and looked very tired.

"Nanao-chan, you're the last place."

"That's because you're too fast, captain"

He suddenly had a surprised expression as he looked past the two captains. Yamamoto was there looking like a weak old man with a slight crouching while Itsuki was in front. The two very opposite things were staring at each other.

To Yamamoto's question, Itsuki said nothing as he looked back. Shunsui and Ukitake were not surprised by the two who had Shunpo better than them.

"The two arrived rather quickly, didn't they?"

Seeing the two, Nanao put his hand into his Shihakuso with the intention of becoming something useful. Seeing his movements, Yamamoto made eye contact with the girl as a look of despair covered her face which caused her to faint due to the pressure emanating from Yamamoto. Itsuki moved a little and became Yamamoto's focus while Nanao stopped feeling the pressure.

Itsuki looked back and reprimanded Shunsui,

"Why did you bring him here? He's too weak."

Shunsui looked guilty looking at Nanao's expression. A hint of saliva came out from his mouth as he looked empty without any energy to speak.

"Sorry, Nanao-chan. I shouldn't have bought you here"

Taking her away, Shunsui returned in no time.

Yamamoto looked at Shunsui as he spoke,

"Your Shunpo's distance is as good as ever."

"Unlike the youngest, Yama-jii"

Yamamoto then looks back at Itsuki, the,

"No problem, there is no need for you to answer but it seems that you are on your side of your brothers. It's more than just beating you guys."

Yamamoto's two eyes were very serious as he continued to speak,

"Of the three students, you are the person I look forward to the most and am most proud of. While Shunsui is sharp and shrewd, he is depraved, lazy and reckless. Ukitake has a weak body but is the most popular and he has a very open mind. When the two fought, they would surpass their peers and elders. You, Itsuki, excel in all three in comparison. You have intelligence that exceeds Shunsui and have the most loyal subordinates among the Gotei 13. Even though you are still young, your strength has experienced the greatest improvement and has long surpassed your brothers. I think you three are like children."

Although Yamamoto looked at Itsuki, it seemed like he was talking to his three disciples. He felt heartbroken seeing the three disciples standing against him.

"I feel that even though we think different thoughts, we walk the same path."

Yamamoto carried his staff in front of him as the wood disappeared leaving only his zanpakuto.

Ukitake looked at Yamamoto while drawing a sword,

"Genryusai-Sensei."

"Don't say anything, further discussion on this is pointless"

Ukitake wanted to say something, but Itsuki raised his hand pushing him to stop. Itsuki stood there while he placed both his hands on his zanpakuto. 

His Zanpakutos is on the left side of his waist so Ryurai is held with a normal grip with his right hand and the Byakko in the left hand with his left hand.

The two never moved and looked at each other, they never let go of their Shikai and kept their zanpakutos in a closed form. 

Stabbing his sword on the ground, Yamamoto proceeded to remove his captain's haori and shihakuso from his upper body. A ripped body appeared with scars littering all over the place.

Yamamoto and Itsuki then release their reiatsu, suppressing the entire soul society. Everyone sensed it, stopping most of the fights that were going on. Ichigo who was fighting Byakuya also felt it, too,

"W-what's that?"

"That's true power."

Byakuya is back against Ichigo,

'Faith, Itsuki.'

Ichigo is a little distracted before concentrating on Byakuya again.

Soi Fon and Yoruichi, who were fighting, also stopped after sensing Itsuki's reiatsu. The two of them had worried expressions on their faces before Soi Fon stared at Yoruichi,

"Initially, I was mad at you for not taking me, but I had Itsuki..."

"So why are you still angry?"

"You took Itsuki's first!!"

The fight then resumed but the two worried Itsuki.

Zaraki had wounds all over his body while a crazy smile never left his face. He felt the reiatsu of the two people he respected the most as he continued to stare at his opponents.

"Genryusai-dono!"

"You sure want to leave; his opponent can kill the three of us even if we combine forces. Although, even if you still want to, do you think I'll let you."

Rangiku was walking towards the center 46 with Toshiro when he sensed Itsuki's reiatsu,

'Be careful, Itsuki.'

It was natural for them to worry because they knew Yamamoto's power could not be booed.

Shunsui and Ukitake were mostly unaffected but they still felt the pressure emanating from the two. They can say that Yamamoto's reiatsu is still higher than Itsuki's, but Itsuki is still on the rise. Even if it grows slowly, it is still an improvement.

The two of them suddenly disappeared and clashed in the middle. The clash created a crater beneath them as they once again disappeared. This time Yamamoto tried his hardest and Itsuki could only compensate a little. 

In terms of strength, Yamamoto was higher, however, all the damage caused by the attack was healed by Itsuki's high-speed regeneration. This process of breaking and restoring strengthened his body and increased his strength.

Arrancars are able to raise more they fight and that is what Itsuki is doing now. Increase with each attack.

Seeing all the possible outcomes and creating countless scenarios.epon reached Bankai, Itsuki was able to have 10 partitions causing a huge increase in his mental abilities and with his thought acceleration of 1200%, idd.

Still this is nothing compared to the 2000+ years of experience fused into one's bones.

Shunsui and Ukitake saw Itsuki as roughly equivalent to Yamamoto. Even though it was a battle of pure swordsmanship, strength and Shunpo, it was still something to be proud of.

Pressing one of Itsuki's swords to the side, Yamamoto took this opportunity to clench his right hand and send it forward.

"Ikkotsu!"

Seeing this Itsuki dodges and drops Ryurai while sending his own, ignoring the destruction caused behind him. Yamamoto responded in the same way. Throwing Ikkotsu again, the two clashed causing Itsuki to retreat as she felt some broken bones in her right arm. 

Yamamoto was also shocked as his arm trembled from the impact. It was natural, the combination of Hierro and Ikkotsu produced a considerable blow.

Thinking of winning, Itsuki took off his hair and removed his arm from his sleeve, leaving his upper body behind, just like Yamamoto. The only difference is the absence of scars and the softness of Itsuki's skin. Shunsui felt it was better that Nanao-chan did not see this,

"Like a father, like a son. Well in this situation, like a teacher, like a student."

Itsuki ignored Shunsui's murmur as he once again prepared to attack Yamamoto.

Picking up the dropped Ryurai, Itsuki calmly muttered,

"Shunko's."

The blue-pink Reiatsu covered Itsuki as one could hear the faint rumbling of thunder and the sound of wind blowing. This time Itsuki disappeared and appeared next to Yamamoto before giving a continuous attack.

Shunsui was surprised to see the table turning, he recognized the technique used by Onmitsukido's previous head, Shihouin Yoruichi. Ukitake is the same.

Yamamoto knew what his students had experienced the last time he saw them fighting. Itsuki was fast, too fast so that when one attack ended, another attack began. Yamamoto retorted with pure instinct and sheer experience as he felt like he was losing face.

'This fucking boy!'

"You seem to have risen brat, let this old man hit you right."

Pushing Itsuki back, Yamamoto releases his shikai, which is,

"Everything in this world, turned to ashes, Ryujin Jakka"

Hearing this, Itsuki replied

"Ruling from heaven, Ryurai"

"Destroy everything to pieces, Byakko"

While flames appear around the two, Itsuki goes into his shikai mode for the first time since fusing with the Hollow. The spell wasn't the only change because even though his gloves looked the same, the lightning in Ryurai looked even scarier.

 The Byakko is not just an invisible sword but now has a precise glass blade. Their physical abilities experienced an incredible increase while three lightning drums in a faint circle appeared behind Itsuki.

It was also the moment Ichigo decided to go to Bankai, yet it was completely overshadowed by Shikai's release from the two. The rising heat melted the buildings and walls around them while faint storm clouds could be seen gathering above their location.

Byakuya looked amused as he spoke to Ichigo,

"How does it feel, realizing this little thing you call Bankai is nothing compared to their shikai"

"No problem, as long as I defeat you!!"

Shunsui and Ukitake finally came to a safe distance seeing the two monsters fighting. They were originally thinking of helping Itsuki but seeing the rare crazy smile on his face, they felt a tremor in their hearts.

Yamamoto slowly increased his Shikai output making Itsuki difficult against the old man. It was not that they were having an intense battle, but that he was training Itsuki.

Thinking back on all the training he had beaten black and blue, Itsuki began to lose control due to all his pent-up grievances as it flowed out, it was all out,

'Screw canon!'

"Bankai!"