The Rebirth In Bleach
Shikai

Itsuki continued hunting the hole. Although he had a faint feeling about something that was not true, he brushed off this feeling and regained what he was doing. Every time he fought, he tried many ideas that he could not do in the academy because he was slowly getting used to the Hollow fighting pattern. Each hole was unique, but they all had the same nature in fighting. 

They utilize their bodies, if they are small, they are fast or if they are big then they are tough. Although this was an unclear concept, it was quite close to the truth. However, there were still some holes that had some sort of special ability.

As Itsuki was facing right now. Acid is seen dripping from his fingers as Itsuki faces the Hollow. Avoiding his attacks, Itsuki was looking for a way to take him down in the most efficient way. There's only one. Dodging the attack, Itsuki quickly unsheathed his sword as he activated his eyes. Looking at the death line, Itsuki slashed at the Hollow, only to completely lose the desired target. His sword instead slashed at his chest, not digging too deep.

Although he had trained his eyes, it was either on a silent target or a small projectile, not on something too big or on an active target. There are too many things to consider when attacking a live target.

Itsuki, however, did not lose his composure as he continued to look for opportunities. Seeing that the Hollow was about to retaliate, he quickly retreated and waited for an opportunity to counterattack only to see the Hollow retreat. A terrifying slash wound could be seen on that sunken chest as it prepared something big. A gurgling sound came from his throat while a bad feeling crept into Itsuki's heart.

Itsuki immediately dodged to the side as a huge acid spit landed where he had stood before. Acid spit began to dissolve the soil at a considerable rate as the hole turned towards Itsuki. Realizing an empty attack on him, Itsuki quickly got into Iaido's position. This time Itsuki concentrated on the Hollow death line rather than just glancing at it. Doing this proved to be quite effective as the Hollow suddenly stopped with fear flashing across its eyes

"Hiten mitsurugi-ryu, Soryusen (Twin Dragon Flash)"

Itsuki quickly unsheathed his sword and slashed his death line, the sheath following, landing right on his chest pushing his back.

The hole let out one final cry before collapsing and disappearing into a myriad of particles.

It wasn't a tough fight, it was just getting used to fighting Hollows and learning how to use Hiten mitsurugi-ryu with non-human creatures.

Sword style, in the end made to fight other humans instead of holes. Itsuki needed a sword style that was more suitable for him so he still adjusted it, so it was convenient to use.

'Stay, how can a middle-class hollow get into the designated training area'

This is the second hole Itsuki encountered and something went wrong.

Shiba Aiko, who was watching Itsuki, also felt quite suspicious. Trying to sense his colleague's reiatsu, he finds a surprising discovery. Using Shunpo, he quickly walked to the nearest guard post. Looking around he found nothing, other than blood on the walls and pieces of school uniforms here and there.

 Looking through several guard posts, he found the same thing. As he searched, an extremely loud hollow scream was heard accompanied by the screams of first grade children.

Quickly walking towards the scream, he found a group of first-class children fleeing while some of his comrades faced a giant hole while more appeared.

Bodies were seen enveloping the ground as more piled up.

Itsuki arrives some time later and sees Gin facing a middle-class hollow while Rangiku and Yuroe team up with the others.

It seemed like the former could handle it while the latter began to lose footing. Itsuki immediately fired a kido to support them,

"Bakudou #4. Hainava"

The gold rope made by Reiatsu was released from Itsuki's hand as it was tied around the hollow member. Rangiku took this opportunity to stab the hole mask, effectively purifying it.

As this happens, more and more holes surround the area. Shiba Aiko noticed this and immediately tried to send a distress signal to Soul Society but, for some reason, it never worked. Realizing that they were trapped, Shiba Aiko, quickly ordered a retreat from the first years while his comrades stayed behind.

Itsuki was joined at the forefront and easily handled a few middle-class holes. This time he entered just to kill and with his speed, he produced some kills. He refrains from using kido because it will consume too much reiatsu in the long run.

He was constantly killing holes as they flocked towards him like moths to flames. Slowly his mastery of Hiten mitsurugi-ryu progressed to a higher level. This, on the one hand, is a sword style house, where he should be located and the situation where he should be used. One against many enemies. Itsuki never stopped killing as he started to perform only one attack to kill one middle-class hollow. A smile slowly began to appear on his face at this one-sided slaughter. His blood started to boil as he grew more and more excited with the feeling of battle.

This lasted long enough until there was only him, Gin, Shiba Aiko and the sixth year left. All the other first years had been retreating as the group faced the attacker hole. The group of four could be seen surrounded on all four sides as they gasped for breath.

"There's still no response from the soul community?" Questioning the sixth year, though,

"No" Shiba Aiko replied as she scanned the surroundings.

"Ap ..." The sixth year was suddenly cut off as his head flew through the air.

Realizing it was a hole, Itsuki immediately thrust his sword in that direction hoping to hit the hole. Sensing his sword entering something, the space in front of Itsuki distorted and a hole appeared before disappearing.

Seeing this as some sort of signal, another basin rushed towards them before another chaotic battle round occurred. Shiba Aiko then slipped as a crack appeared, which was noticed by the Hollow facing off. Taking advantage of this, the hole punched him so he flew towards another group of holes. Before the group could attack, a voice sounded.

"Shoot to kill, Shinso"

White flashes were visible, as the holes split in half. Itsuki took this opportunity to immediately capture Shiba Aiko and take her to the shelter where the first years were. Seeing Itsuki enter, the first years regained some hope which quickly dwindled once they saw Shiba Aiko's form of injury. 

Itsuki quickly lowered her and turned to leave once more when she sensed someone pull up her sleeve

Rangiku and Itsuki could see the worry in his eyes. Itsuki only gave her a small smile before she gave a reassuring nod. Turning around, he left behind a group of shocked students.

"So that's how he is"

"You..."

A snarl suddenly sounded as their attention once again turned to the one who had just been injured. They quickly moved him to the injured spot before someone came and started taking care of him.

Returning to that spot, Gin is seen battling a few holes. After Itsuki joined, it incriminated Gin before they removed the remaining hole. Taking a breath Itsuki started talking,

"Wake up your Shikai, huh?"

"just now. Looks like I raised you in this aspect"

They started laughing as they slowly regained their stamina.

While resting, Itsuki suddenly stopped what he was doing and started looking in a direction. A single hole could be seen there. It looked perfectly normal, but an alarm bell rang inside Itsuki's head. Seeing the serious expression on Itsuki's face, Gin also got up and pointed his sword at the other party. This stalemate lasted for quite some time before Gin made the first move, instead,

"Shink"

Once again, a white glint appeared as his sword extended to its intended target. Seeing this Itsuki walked into the hole that appeared right behind him. Just as he was about to swing his sword, three sharp claws flew out piercing Itsuki all over his body.

"Ohim!!!!" A worried shout came from Gin, trying to once again attack the Hollow. A smile could be seen on the hollow mask that suddenly appeared behind Gin and hit him behind. Gin continues to struggle with the Hollow while the other party continues to play with his prey.

Returning to Itsuki, he was seen lying there with three terrifying holes in his body. His right hand was still holding the zanpakuto as he refused to let go. 

Perhaps due to fate, another asauchi could be seen next to him calmly lying there, having clearly lost the previous author. For some reason, Itsuki got a sudden urge to grasp the sword. Struggling to move his hand, Itsuki was able to grasp the sword despite his great difficulty.

Holding the sword, Itsuki felt complete. It was as if his soul was now one. All traces of fog had disappeared in his inner spirit world the moment he finally entered it. Itsuki was standing there, on the top of the mountain while wearing a tattered school uniform and traces of blood here and there. Sensing the two pairs of eyes staring at him, he turned around and was immediately startled.

Two monsters were behind him. One of them was hidden in a cluster of thunder clouds, and with faint scales appearing, Itsuki could tell it was a dragon. The other was a huge white tiger who was gracefully staring at him while wearing a wind symbol on his forehead. They slowly moved forward as they came in front of him, both of them having an apathetic look that covered their expressions. The three faces of apathy faced each other while a faint sound rang out in Itsuki's ears. A smile appeared as he started to disappear.

Opening his eyes, Itsuki slowly got up while staring at Gin. It seemed that only a moment had passed when he was inside his spirit world.

Itsuki Reiatsu had just surged as she instantly caught the attention of Gin and Hollow. There was only one reason why he had not made any progress in his zanpakuto. That was one simple reason, how one asauchi could hold two zanpakuto spirits.

Itsuki stood sideways while holding one sword in the backhand grip behind him and holding one properly in front of him. His reiats continued to grow stronger until it broke through to the lower number of reiatsu. While this was happening, a faint voice came out from his mouth

"Going from above ..."

"Split into pieces ..."