Bleach

- The reason Kazeshini is not considered a dual wield Zanpakto is because the essence of the Zanpakto is the chain, not the sickles. The more important reason is because there is only one spirit inside Hisagi. Ichigo has Yhwach and White, who both make up Zangetsu. Shunsui gained the second sword when Ohana gave birth to the lunatic, so that the Ise sword could be hidden. Ukiakte's symbiosis with Mimihagi is the reason he is dual wielding.

- In Bankai the chains of Kazeshini increase ten fold. They form a tree that is connected to a black sun made of millions of chains. These chains then wrap around Hikone and Hisagi. Hikone tries to kill Hisagi with a Cero, but Hisagi is unscathed. He and then uses Blut Vene Anhaben to take over Hisagi's body. That doesn't work either. Each time the chains negate the damage. The two are bound within a certain area and when Hikone tries to escape, the chains wrap around his neck and drag him back. Hisagi cuts Hikone's arm off to show that Hikone is likewise invulnerable now, as his arm was whole again. His reiatsu was building up through the chains and accumulating in the 'black sun' overhead. The chains take the Reiatsu of the combatants and transfer it to the black sun, where it is averaged. This reiatsu was being used to restore the injured person to their original state. In other words, as long as Hikone continues to cut down Hisagi, Hisagi's wounds would be healed by the consumption of reiatsu of both Hikone and Hisagi and vice-versa.

- That also means either both will survive the Bankai or neither. Of course, if an ally is nearby, they can interfere and kill the enemy at the cost of Hisagi's life, once the opponent is exhausted enough. It is quite the Kamikaze-technique.

- The Bankai does not prevent pain though and the pain remains as long as the Bankai is active. The novel admits, this could easily be used to torture Hisagi and break his souls and sanity completely. Luckily for him, Hikone has no idea how to do that.

- Hisagi's Shikai of Kazeshini represent the current world, where life and death exist as separate things, flowing freely like the wind. His Bankai represents the old world, where there is neither death nor life, regression or evolution. It also represent the Soul King, who is trapped for eternity in a place with no life or death, progress or stillness.

- Hikone asks Hisagi to lift the Bankai, since that will only mean continued pain. Hisagi doesn't and Hikone apologizes for having to hurt him. Hisagi's flesh gouges in, the ribs break, and the internal organs get ruptured. Hikone asks for forgiveness while attacking Hisagi. Hisagi just tells him, if he feels sorry, he shouldn't do that in the first place and certainly not keep doing it, as suffering isn't exactly Hisagi's hobby. Hikone tries to argue that he is doing it for Tokinada. Hisagi just tells him, he is just shifting the blame to Tokinada. He also tells him that it is wrong to hurt someone who doesn't resist. This also is a Take That! against the founders of Soul Society who did exactly that against the Soul King.

- Hikone has now to think for himself, something he had never done before. For now he tries to find an easier way to defeat Hisagi that doesn't involve pain. Hisagi tells him, that Hikone has a sense of right and wrong, as Hikone is able to realize that causing someone pain is not a good thing. Hikone can't rely anymore on Tokinada and asks Hisagi what he should do. Hisagi tells him, that he has to figure that out on his own, as the world won't always be kind to Hikone. Hikone begins to break down. Hisagi tells Hikone that he is no one's puppet and a person. And a person has to think for themselves.

Then, Hisagi moved one of his fingers, controlling a part of the chain, taking out the two scythes from within the shadow on the ground; the shadow from earlier.

"You don't wish to cut someone who isn't resisting, yes? Then let me be your opponent; someone whom you won't feel bad about slashing."

"Eh...?"

"I have a lot to teach you. So make sure you start learning."

Although Hikone was so much more stronger than him, Hisagi said such a thing. He pointed the blade of Kazeshini towards Hikone; whereas Hikone was confused by his words.

"Do not hold back. If I were an enemy, then I should be dead by now."

"...."

"When facing an enemy, always position yourself to be able to side-step an attack. So always take half a step backwards."

Hisagi taught Hikone the same thing Tosen had once told him.

So as not to be confused any more, so as to reject Hisagi's words, so as to block off Hisagi's teachings from his mind, Hikone knocked aside the blade of Kazeshini and cut Hisagi.

"Aaaaaaaaaaah! Shut up, shut up, shut up!"

And once again, Hisagi's body was restored soon after. In return, the blade of Hisagi stopped right at Hikone's neck and penetrated through.

"Ah...."

"See? Now you're dead too. You're much stronger than me, aren't you? But you are full of openings. Do not leave such gaps in your defence."

Hikone may have been a prodigy when it came to battle, but he lacked experience. In light of this unique situation, in which it is possible to 'not die even if one is killed', Hisagi's high level of discipline and the finesse in his swordplay, easily surpassed Hikone's techniques.

"Wrong... You're wrong... I grew stronger... in order to be useful to Tokinada-sama. For his sake...."

"That's not what should concern you. There are plenty of other things in life that you ought to be afraid of and this is not one of them. Fear is the only thing that's been missing in you."

"No, no, no.... aaaaaah.... aaaaaaaaah... aaaaaaaaaah...."

Hikone looked like he was about to cry, as he tried to cast aside Hisagi's words. He kept screaming and repeatedly hacked off Hisagi's body as if in a blind rage.

However, every time Hisagi endured the pain, he kept pointing the tip of his blade at Hikone's vital points; throat, heart, eyes; countless number of times. This was repeated over and over again.

- The fight is over. Hikone and Hisagi are almost out of Reiatsu.

- Hisagi thinks about words Tosen once thought him: This world is not a kind place. And yet, you have to keep on living in this unkind world." Hisagi then adds an addendum to that: "And that's exactly why you should be as kind as possible to the people around you. Come, let's do it together."

- Hisagi tells Kyoraku that he is going to end his Bankai and wants Kyoraku to not injure/kill Hikone. Shunsui jokes that he isn't that heartless but Hisagi remains firm and Kyoraku relents.

- Hisagi ends his Bankai but in that same moment, Ikomikidomoe shines. It springs out of the Zanpakto and attacks Hikone, trying to devour it. But Aura is able to protect him with her body. Ikomikodmoe had devoured a piece of the Soul King from Hikone. That piece gave Ikomikidomoe immense power and broke Ichibee's Bankai curse. The Zanpakto got his true name back.

- It seems Ichibee's name curse can be broken if the nameless person gets a large enough power boost.

- Ikomikidomoe is going to reveal his true name but Kenpachi kills him before that.

- Yukio and Urahara open up a large Garganta that leads to a digital dimension. Aura uses her remaining strength to dump the falling castle to the digital dimension. She says a few last words to Hisagi and Hikone and then dies from her wounds.

- Meanwhile Tokinada escaped and is in his home. He plans to heal his wounds and bide his time until one day he will strike again. For him the entire affair was just a novel experience. But then Mayuri appears. Mayuri was curious about Tsunayashiro's experiments to create new Soul Kings. He then calls Tokinada an amateur. Mayuri says, Tokinada should have entrusted him with the experiments and the result would have become much better, than what Hikone ended up as. Tokinada agrees with that, but he thought that would be boring and wouldn't satisfy Tokinada's wish to for. entertainment, chaos, mayhem and to laugh at Soul Society. Tokinada finds it funny that Mayuri believe Hikone was created for any great cause and laughs.

- As Tokinada tells Mayuri: "There is no purpose behind the creation of the Rei-o other than pleasure. If you look at all the information present in our secret archive, I wonder if you would understand how sinful the Soul Society is? This world is shaped entirely by betrayal and malice. This is a world where the descendants of the sinners are just as wretched, reaping the benefits from their ancestors. There is no need for a great cause in this disgusting world. This world decays in pleasure and drowns in sinful lust!"

- Mayuri disagrees and believes that refusing to change because of past sins is just laziness. Tokinada stated that Mayuri and Urahara are not different from him and that all three of them trample on other people's lives for the sake of lust (lust of knowledge in Mayuri's and Urahara's case).

- Tokinada asks what Mayuri wants to do now. Mayuri tells him, he just wanted to observe the end of Tokinada's experiment. He is about to leave when he turns back and tells Tokinada, that he should have closed the door. Tokinada didn't get what Mayuri meant, when a sword ran through his body. The owner was a young girl in assassin clothes.

- The identity of the girl is unknown but she is the child of either the other clan members or the assassins Tokinada sent to kill himself and the rest of the Tsunayashiro. What is clear that this girl doesn't even know how to properly hold a sword, let alone take a live. Tokinada can't believe that he got killed because of something so trivial like the death of some parents, which makes the girl even more furious. But as she realizes that Tokinada is really about to die (and also that Tokinada really goes off his rockers) she becomes horrified and scared. If Tokinada wanted, he could have killed the girl, but he did not want to. He instead chose to laugh, as his last action.

“Hahahahahaha! Hahahahahahahahahaha! I see... I am... I am going to die! Here, in this way! Killed, not by Tosen, who bore such a powerful and long-standing grudge towards me, but because of the petty vengeance of some small fry, and by a kid, too, no less! So this is how retribution finally catches up to the Soul Society’s Great House of Tsunayashiro, and I get to witness karmic retribution in action at close quarters as my life draws to an end! Hahahahahaha!”

“Uu...ah...”

The assassin continued to whimper as Tokinada kept on laughing in disdain; coughing up more and more blood.

“....”

Mayuri looked up from his book silently as he listened to Tsunayashiro Tokinada’s final words.

“Serves you right, serves you right.... Kyoraku Shunsui!”

The Head of the leading family amongst the Four Great Noble Houses, who was pouring out his life into oblivion, kept on laughing scornfully at the people he had known in his life, while he convulsively spluttered out blood.

“My life is ending here, Kyoraku! You couldn’t reach me! Sorry to burst your bubble, but this nameless little girl got to me first! You lost the chance to arrest me, Kyoraku! Such a shame, isn’t it? You didn’t even get to put me on trial in the end!”

Although his face was losing its colour from the constant loss of blood, his voice was full of vitality. Although, he should have lost his ability to speak because of his extreme degree of pain, Tokinada went on yelling loudly and mirthfully, addressing people who were not even present there, his eyes focussed far away, as if he could see each of those people standing there, invisible, in the room.

“Well, Tosen! Does this frustrate you? That I am dying without even an ounce of regret over what I did to you? Well, Hisagi Shuhei! Are you furious at me after hearing what I just said? And what about you, Ginjo? And Aura? Did Hikone already kill you? Even if you did survive somehow, you can’t touch my soul! Not one of you can!”

“.....”

The assassin stood frozen to the spot, unable to understand what Tokinada was shouting about. The girl watched, horrified, as Tokinada went on shrieking with laughter, dragging himself slowly towards a certain direction where no one was present-

“And what about you... Ukitake...? You always tried to find some good in me... didn’t you? But I will die here... without anything ever having changed.... within me...”

Spouting forth more blood than ever before, Tokinada stopped short and collapsed against the wall, as if he had broken down.

Who was it that he saw-

“Well... Kakyo...The stars... I will..."”

When Tokinada said that, his eyes became calm for a moment, with a glimpse of emotion in them, as if those words spelled his salvation. He distorted his lips to form a final smile, and then became still.

“Quite a child-like assassin...huh...”

After having glanced at the young assassin who would not stop trembling, Kurotsuchi Mayuri slowly walked away and left the Tsunayashiro estate.

“I see. So it was the karma of the Soul Society that brought about his death. That would have been enough to satisfy him, I suppose.”

It would have been possible for Mayuri to re-animate Tokinada like he did with his own corpse unit and with Kira Izuru, but he did not even try it. It was impossible to tell whether it was because that action would not have been favourable to Mayuri, or whether it was because Mayuri felt some sort of emotion for Tokinada.

Mayuri did not look back at Tokinada’s dead body; he ignored the assassin who had just killed the Head of the House of Tsunayashiro; he simply left the spot where ‘everything and everyone of interest’ no longer held any value. After a while, the girl, too, ran away, frightened. What remained was a mangled corpse in a blood-splattered room.

In the end, Tsunayashiro Tokinada ended his life without bequeathing a single word to Hikone until the last moment. Whether Tokinada had intended to, or whether he had really forgotten... that remained unknown.

As Head of the leading family of the Great Nobles, it was very discourteous of him.

But despite all that, Hikone’s soul did persist within Tokinada, till the very end.