Sakugo wasn't the one who killed him that day. Although she did contribute to it somewhat on the orders of someone else, the one who dealt the finishing blow wasn't her. So who could it have been?
"Everything I've been chasing up till now? Has been misplaced? No... your still a main cause!"
"Jesus your clingy. Grow up already."
Albrecht who was still quite injured, approached Kai from behind. He could sense the bad relationship between the two, so it was obvious who he should ally himself with.
"Your name's Kai? Right? If she's your enemy, then let me help you. As it turns out, she's an opponent that I can't kill by myself."
Kai simply nodded. Despite how much he didn't want to believe it, Sakugo was no longer an opponent he could beat by himself. Allying himself with Albrecht was the best course of action he could take.
"I don't know what you did to me earlier, but I feel a little stronger thanks to you. If you have a plan, I'll follow it for now. As long as I can land the finishing blow, I don't care."
"The name's Albrecht. I have an idea to get around her regeneration, but to do so, you'll need to hold her down for exactly 10 seconds. Do you think you can manage?"
Kai smiled.
"Only 10 seconds? I'll hold her down for 20!"
Sakugo could overhear their little chat, which caused her to grow agitated. They were underestimating her once again, she thought. But it didn't matter, she would end this here. She fired a blade of nitrogen which ripped apart the ground, making it's way towards the two.
Kai and Albrecht dodged it with some difficulty.
"Qualkreis!"
Four Thunderbolts of Reishi struck all around Sakugo as she raised her defensive barrier. Each thunderbolt began to take the form of a Quincy cross bow down the middle, as well as prepared to fire an arrow.
With just a swipe from her hands, a powerful gust blew them all out, which she found to be pathic. This was only a distraction for Kai who appeared above her. He shouted as he threw a powerful horizontal slash at her, which was blocked by the nitrogen barrier.
"You don't learn do you? You'll never be able to touch me!"
Kai smirked as the air around Sakugo suddenly grew heavy. And before she knew it, gravity had been amplified. Sakugo was too careless, she'd forgotten that Kai had already released his Shikai.
He quickly backed away as he screamed at Albrecht to stop her at last.
"Offer your prayers to the renewed King. Those who do will be blessed, but those who don't will have everything robbed from them!"
He threw five orbs of Reishi from each of his finger tips, which flew above Sakugo. They then merged into one singular Quincy cross that hovered over her. There was an incoming danger, but the gravity was too heavy for her to break free.
"WHAT ARE YOU DOING!"
She threw two more slashed of nitrogen at Albrecht who was vulnerable as he chanted. But Kai quickly manifested only 1% of his Jigoku's power, and then flash stepped in front of them. He managed to parry both of them away, with only slight injury.
"Take it all, sacrifice, and only then you shall be forgive. Sankt Altar!"
A pillar of blue light then erupted out of the cross. It collapsed on top of Sakugo, causing her immense discomfort. A faint green light was then pulled from her as it ascended back into the cross, and then into Albrecht's own heart.
The second the cross faded, the influence of Kai's gravity also disappeared. She quickly backed away while panicking. She could tell in just a glance that something had been taken from her. Kai quickly returned back to Albrecht's side, who had fallen to the floor on one knee. He was sweating bullets.
"You okay?"
Despite how bad he seemed, he said he was fine.
"This was my first time using this technique, but it seems it worked. I only learned it from a vision, but it was worth the gamble."
A great amount of Sakugo's spiritual pressure had disappeared, but that wasn't the only thing Albrecht stole. No matter how hard she tried, she could no longer use fullbring on her own body. Her regeneration had been disabled.
"End it Kai! While I'm still holding onto her power, finish her off!"
Albrecht was still very inexperienced in the ways of power plundering. And since Sakugo's abilities were Hollow in nature, he could only keep a hold of them for a certain amount of time until he broke.
"Jigoku yōsai, 3%!"
A second chance. One last chance to win, that was the opportunity Albrecht provided. Everything now hinged on this one moment. The outcome of what happens here, will alter the future of the three worlds forever.
In a desperate attempt to escape, Sakugo summoned countless more blades of nitrogen, all of which she fired at Kai. But they were not just weaker, but even slower than before. In his current state, Kai could deflect them easily.
"KEEP AWAY FROM ME!", Sakugo shouted.
She was getting more anxious as she felt her own strength dwindling. Her hands were shaking, and her body was trembling as Kai ran towards her. That once cocky attitude of hers had turned into fear in a matter of seconds.
"I'm weak. That's the one truth I'll never be able to change. Because of it, I have to rely on others for help, but that's okay."
Sakugo quickly realised that Kai was quickly coming to her faster than she could get away, so in a last ditch effort, she compressed a bunch of nitrogen before firing it as a single bullet.
The sudden increase in speed and power caught Kai off guard, so when he tried to deflect it, the bullet ended up piercing his right eye, blinding him. He was about to fall back, but then he felt a warm hand push him forwards.
"I have to keep moving forward, just like she told me, which is why I'll never give up!"
Suddenly he found himself in front of Sakugo. He didn't know how he got here, but all that mattered was that he made it. It was time to end it all.
He took a short step forwards before slashing Sakugo across the chest. Her blood spilled everywhere as she dropped the book which she always carried. She collapsed onto her back while Kai just stood over her.
As they looked each other in the eyes, Sakugo's was filled with fear while Kai only had had pity for her.
"I won't ever be able to forgive you, but if it wasn't for you, I wouldn't have been able to travel down the path which I did. Because of me people died, but I was also able to save others too. Thank you Sakugo."
She turned over and tried to crawl away, but her open wound made that even difficult. There was only one person whom she could call upon now as her death approached her.
"SAVE ME! KENSHI!"
Kai didn't know who she was calling for, but he could sense the Immanent danger approaching them. He quickly tried to finish Sakugo off, but then he felt something heavy kick him the side of his body.
In an instant, he was sent flying half way across Seireitei, and his body ended up crashing into the barely standing colosseum.
"Kai!?"
Shinten, Yuki and several others who had stayed behind were surprised to see him suddenly fly in like this. His clearly injured body only made them more worried. Yukiko quickly ran towards him.
His right ribcage was shattered, but he survived the impact with only and inch of his life left. Yukiko quickly began to treat him with healing Kido, but Kai tried to stop her.
"You need to get out of here!"
Everyone felt the terrifying spiritual pressure of a Hollow appear. It was exceptionally more powerful than the Vasto Lordes which appeared earlier. When they all looked towards it, it appeared to be carrying an unconscious blonde haired woman on its shoulders.
"I held back but I still sent you so far? Man your weak."
Hisagi could tell at a glance the trouble which this hollow posed. The only thing that would be able to stop him was a Bankai.
"BAN-"
Before he could even finish uttering the words, he felt something kick him in the abdomen, before being flung away a great distance. The second Hikone saw this, they fell into a fit a rage.
"HOW DARE YOU HURT MR. HISAGI!"
Although there were other people around, he did not care about hiding his true power. She created 3 ceros with Heilig Pfeil mixed inside of each, before firing them with terrifying accuracy.
The hollow however, just moved past them in the blink of an eye, before 'lightly' kicking Hikone. The simple attack broke through his Hierro and Blut Vene, making him cough up saliva as he chocked on his own breath.
"I'm not allowed to kill you, so you can get off lightly. But don't expect me to be this merciful again."
With him being out of the way, he turned back his attention towards Kai who was somehow still living. He noticed Yukiko who was healing him, so she shouted at her to get out of the way.
"That person almost killed my sister. Don't get in my way."
She heard this, but she kept healing him anyway. Kai was fading in and out of unconscious but he was too weakened to make her stop. With the little bit of strength he had, he weakly grabbed her arm.
"I'm not letting you die in front of me again, so just shut up and let me heal you!"
She was crying, but Kai couldn't do anything about it.
The hollow started to take his steps towards the two, but then Shinten quickly blocked its path, with his sword in hand. He was trembling from fear but he held his ground anyway.
"I'm scared. I'm terrified as shit, but I won't sit and watch my friend be killed in front of me!"
He ran up to the hollow screaming his head off. It had no weapon so none of his techniques would work here, but he had to try anyway. Otherwise what kind of a person would he be?
The hollow wasn't as merciful to Shinten as it was to everyone else. It threw a single punch which went straight through his chest. His fist went from one end of his body, to the other, making him seem more hollow than human.
"Prey letting himself get hunted? How foolish."
Kai's eyes widened as Shinten's blade fell to the floor. Not only did he a lose a large amount of blood from his chest, but it began to pour out from his mouth as the light in his eyes faded.
The hollow ripped his hand out, letting Shinten's now dead body fall to the floor. He kicked it out of the way before walking back over to Kai.