Shūkei: Hakuteiken
Seeing the huge slash rushing towards him, Byakuya placed his sword in front of him as, the next moment, all the swords and petals made of sakura dissipated and merged with Byakuya's sword.
Within a few moments, huge white wings formed behind him, and his sword turned into a bird?
BOOOMMMM
A moment later, Byakuya's sword collided with the energy slash as the entire world was divided into blue and white.
CRACK CRACK CRACK
A few seconds of struggle later, Karin's blue slash finally cracked, though Byakuya's sword energy was also spent.
"Got you"
Ancient Titan's Hammer
BOOOMMMMM
Just then, Karin, in her giant 250-meter form, appeared in mid-air, holding a giant Reishi hammer hundreds of meters wide as she smashed it towards Byakuya.
The next instant, Byakuya, along with the entire Sōkyoku Hill, the execution platform, and Sōkyoku, whose power is said to be comparable to a million Zanpakutō, was smashed as the Hill exploded, and Byakuya, who felt all his bones breaking into thousands of pieces, fell downwards with the rubble.
"Ichigo, when did you have an older sister?" Yoruichi, who appeared behind Ichigo at some point, asked while she looked at Karin, who was back to her normal form, with astonishment.
"Yoruichi-san, she is Karin, my younger sister.... I also have many questions, so I can't answer yours." Ichigo said as he looked at the place where there used to be a mountain.
"So, how did you get so injured?" Karin, seeing no signs of Byakuya appearing, walked towards Ichigo and asked with curiosity.
"I fought the captain of the Eleventh Division, Zaraki Kenpachi."
"Ohhh, you survived that guy? Sugoi!"
"Isn't Byakuya stronger than Kenpachi... no need to be so impressed." Ichigo, seeing Karin's admiration, felt that Karin was trying to comfort him and said calmly.
"I don't know, my Sensei just said that that guy Kenpachi is a monster."
"Young miss, who is your Sensei?" Ukitake, who had seen the entire fight, which didn't last more than five minutes, asked politely. He felt that Karin's Sensei might have a hand in the death of Aizen... their beloved comrade.
"Uchiha Itachi." Karin, feeling no sense of hostility from the other side, said without much thought.
"Uchiha Itachi? Is he also a Quincy?" Ukitake, finding no Itachi's name in his thousands of years of memories, asked politely.
"Yeah, he is a Quincy, a super strong one."
"Karin, when did you awaken your power and how did you become an adult? Did you receive Quincy powers like me?" Ichigo finally asked the soul-searching question.
"Well, I met Sensei a few hours ago. He said that you have infiltrated Soul Society and you will die one hundred percent. Then he offered me a chance to become stronger and save you. I agreed, and he took me to another dimension. There, I trained under him for seven years, and when I came back, less than a second had passed.
As for how I have Quincy powers? Idiot, don't you even know that Quincy powers are inherited by blood?" Karin, seeing the clueless Ichigo, said with disappointment.
"You mean father and mother are Quincy?" Ichigo asked in shock.
"No, only mother is Quincy. Father is a Shinigami, the former captain of the Tenth Division." Karin said calmly. Although even she was astonished about her identity and her father's strength at first, now she didn't care much about it.
"Ohh, you are Isshin's child? You don't look a bit similar to him." Although Ukitake became more astonished by the mysterious teacher of Karin, who could control time or had ways to manipulate time, he was immediately caught by the latest news.
"Ichigo, then you are my clansman." Ganju, hearing this, patted Ichigo's back in excitement.
"Let's stop this chitter-chatter. Ichigo, what is your plan to escape Seireitei? If we delay for too long, we might get trapped." Karin asked Ichigo in a hurry. She didn't forget that there are eleven more captains like Byakuya and even the Head Commander still in Seireitei let alone that mysterious Squad Zero with the power of entire Gotei 13.
"We had planned to regroup here after rescuing Rukia and then use Senkaimon to return to the Human World. Now that Rukia is saved, we just have to wait for the others to arrive."
"That is very dangerous. After your commotion of defeating Captain Byakuya and, especially, the destruction of Sōkyoku Hill and the Execution Platform, the entire Seireitei has been disturbed.
All the captains and Lieutenants are rushing here at full speed. If you still run away now and then escape to the Living World, you might still be saved, but if you wait any longer, then even with the power of this young lady, it's impossible."
"No way, I can't abandon and leave now. Yoruichi-san, can you find or inform them? You must have a way to contact them, right?" Ichigo immediately rejected Ukitake's kind advice as he requested Yoruichi.
"Yo, Karin, how is it going?" Just then, Itachi's voice rang out as a space-time portal opened behind Karin.
"Sensei, you are here! Rukia is saved. We just need to find his friends and we can leave. Hmm? Are they your friends?" Karin, seeing Itachi, replied happily, though she asked her doubt upon seeing the Espada following Itachi.
"They are my subordinates, also known as Espada. Though the seventh seat is vacant for now. As for them.... here they are." Itachi answered Karin's question as he waved his hand, and three space-time portals opened, throwing Uryu, Orihime, and Chad out.
"Orihime, Chad, Uryu!" Ichigo, seeing this, looked at them with joy.
'Are they Hollows or even Vasto Lordes?' Ukitake, on the other hand, observed Itachi and the nine guys behind him with caution.
'Have the Quincy and Heuco Mundo joined forces?'
"Umm, how should I call you?" Ichigo, after his reunion, asked Itachi respectfully.
"You can call me Uncle Itachi or Sensei, just like Karin."
"Uncle Itachi, thank you for your help." Ichigo, hearing Itachi's words, nodded and bowed in gratitude.
"No need for all this. You have the blood of Quincy flowing within you... I will naturally not leave you alone." Uryu, who heard this, became more shocked. This was the first Quincy he met other than his family, and he didn't expect Ichigo to be Quincy, but isn't Ichigo a Shinigami?
"Then Sensei, are we leaving?" Karin, sensing more and more presences arriving, rushing towards them, asked worriedly.
"Nah, I have to take some ancestral property. Things are about to become interesting, so watch the show." As Itachi said this, Ukitake's bad premonition grew more and more, but he could only wait for the other Gotei members to arrive.
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