Nel was startled and then nodded, replying calmly, "Yes, brother, you just said that you want to kill him and take revenge, then how can I be happy if your enemy wins every battle?"
"Heh, don't worry; even if he wins hundreds of battles, it won't change his ending, which is already doomed." Eero laughed a little and explained while patting her head, "It's all part of the flow. His end is predetermined by his own arrogance."
Nel nodded, and then she glanced at Aizen and Gin leaving the fake Karakura town through the Giganta.
After their departure, Isshin took Ichigo to the Dangai in order to teach him the final Getsuga Tenshou because there is a huge time difference in reality and Dangai space.
One hour in that rushing torrent is two thousand hours here, Eero thought to himself with detached amusement. Perfect for a power-up, as long as you survive the rush.
"Let's go; the final battle will happen two hours later inside the living world. Till then, we should take a stroll in the living world."
Eero spoke and then turned around and walked inside the Giganta along with Nel.
…
On the other side, the living world,
Karakura town,
Aizen and Gin encountered Lieutenant Matsumoto and humans. Aizen told him to deal with her, and he will hunt the human in Karakura town in order to complete his evolution.
Gin leaves behind a defeated Lieutenant Rangiku Matsumoto, her body weak and broken, and heads back to Aizen's location.
As he does this, he notes that Aizen is still chasing after the people of Karakura Town and remarks on Aizen's cruelty.
Gin then moved forward and stopped behind Aizen, informing him of his return.
Hearing this, the human group, which was fleeing a second ago, stops and stares at the two former captains' polite altercation.
They wonder who Gin is and if he's going to help them, but Tatsuki disproves this. Aizen asks Gin about Rangiku, and the latter replies that he has killed her.
Aizen pauses for a moment and then confirms Gin's statement, as he cannot feel Rangiku's Reiatsu. Aizen says he is surprised, as he thought Gin was still somewhat attached to Rangiku.
Gin denies having any connections whatsoever. He reminds Aizen of what he told him when they first met: that he is a snake with cold skin. Devoid of heart, he slithers around searching for prey with his tongue; his favorites are swallowed whole.
Kanonji suddenly suggests that they should keep running, and the group does so. Aizen looks at the group running and says he's grown tired of the chase.
Gin asks what Aizen intends to do once he's killed them. Aizen replies that he intends to hang the bodies outside of town in a noticeable location and then begin making the Ōken.
Gin places his hand casually on Aizen's drawn Kyōka Suigetsu and tells him if that is his plan, he should let Gin kill them.
Gin then catches Aizen by surprise when he suddenly releases his Kamishini no Yari, shooting it through his sleeve and into Aizen's chest. Aizen's expression instantly warped from bored superiority to a flash of sharp, raw disbelief.
Gin looks back at Aizen and states the sole way to escape Kyōka Suigetsu's ability is to be touching the blade itself before "Complete Hypnosis" is activated.
He ponders how getting that information out of Aizen took many decades. He then states that despite not a single being in the Gotei 13 knowing that fact, they all intended to kill Aizen nonetheless.
As Gin retracts his Zanpakutō, he admits that watching them try to kill him gave him anxiety, since the only one who can kill Aizen is him. As dark, thick blood flows out of his chest, Aizen grabs his wound, the wound instantly starting to close, and tells Gin that he knew all along and he brought him with him to see how he would go about trying to end his life, but he mentions how unfortunate it would be if he thought that attack would do it.
Gin interrupts, stating that he never imagined that it would. He then has Aizen take note of a nick in the blade of his Zanpakutō, a microscopic chip in the metal. He then points to Aizen and states he put that little missing piece inside him.
Aizen is confused as Gin explains he told him about his Bankai ability a long while back; he then mentions that he lied.
Gin admits it doesn't extend as long or as fast as he said. It simply turns to dust for one moment while extending and contracting. Within the interior of the blades, a deadly poison capable of breaking down cells is secreted.
Aizen is surprised at the revelation as Gin senses he now understands that during the time between striking his heart and pulling his sword back, he left a tiny sliver of that dust right in his heart.
Aizen attempts to say something, but Gin simply tells him, with a cold, triumphant smile, if he intends to speak, he should do so soon, but then again, no matter how quickly he tries to talk, he is going to die either way.
Gin then places his hand up to Aizen's chest and activates his technique. Kill, Kamishini no Yari. Aizen curses him, a raw, frustrated yell, as Gin simply smiles and tells Aizen that a hole will open in his chest and he's going to die; he then mentions that's what he has always wanted.
Gin then watches as Aizen's chest begins to dissolve from the inside out, the skin and muscle sloughing away in black, oily ribbons of reishi, leaving a gaping, horrific hole with the Hōgyoku floating in the middle, radiating an eerie purple light.
Gin moves to take the Hōgyoku, but Aizen grabs a hold of his wrist with a desperate, savage strength and throws him, but Gin still gets away, clutching the Hōgyoku.
Gin goes around the side of a nearby building and looks at the Hōgyoku in the hand of his now injured arm. He then senses an eruption of a large amount of Reiatsu, a terrifying, earth-shaking wave of power.
...