"I'd like to welcome you...to MY Soul Society." Aizen smirked, still strapped down to his chair. Yhwach smiled in response before unleashing a giant wave of black matter. He seemingly hit Aizen, causing a lot of damage before seeing that Aizen was now out of the chair, standing away from where he was. "How odd. I could've sworn you were locked in fierce combat up in the Soul King's Palace. It seems Ichigo Kurosaki gave you more trouble than you bargained for."

"Don't project your own anxieties onto me." Yhwach replied. "After all, you were the one defeated by Ichigo Kurosaki."

Aizen stayed silent for a few moments before speaking again. "In any case, I thank you for ridding me of that infernal chair. Because now...I have the means to stop you." Aizen summoned his 'Kyoka Suigetsu' and held the handle-less blade in his hand.

"HAH!! You would stand in my way to protect the Soul Society?"

"Please don't misunderstand." Aizen smiled. "I simply wish to erase anyone who might try to rule over me and control me. Now...Bankai."

Yhwach stood still as he felt a shift in Aizen's reiatsu. He actually possessed no knowledge of Aizen's Bankai. The reason being, Aizen tricked everyone with his 'Kyoka Suigetsu's Complete Hypnosis back when he was a Captain. So no-one knows what his true Bankai could be.

Moments passed by and nothing happened. "Were you bluffing?" Yhwach asked, chuckling to himself. He charged at Aizen and stabbed him with his arm.

At the same time, Aizen pierced Yhwach's shoulder with his Zanpakuto. Both moved back but Yhwach was quicker in initiating another attack. He converted his black matter into needle-shaped projectiles and hurled them at Aizen.

The ensuing attack caused a smokescreen to appear. Yhwach waited and felt Aizen's reiatsu actually weaken. He walked forward as the smoke disappeared and was surprised to see Aizen...gone. There was no trace of him anywhere. Yhwach thought it may have been one of his tricks and so levelled the area around him. Yet he was not there.

Did he get me with his 'Kyoka Suigetsu'? No, impossible. I would've felt it if he used his Shikai. Wait, could this be his Bankai? But that can't be!! What kind of ability is this? What are you planning, Sosuke Aizen?

Chapter 680: THE GROWING HYPNOSIS

- Back at Wahrwelt -

"Well? How is it?"

Ichigo knelt near Orihime as she replied, "I'm sorry. I tried but I can't fix it..." Ichigo had honestly expected that much. Right now, in the destroyed room were Ichigo, Orhime, an unconscious Chad and Ganju, Rukia, Renji, Ginjo and Tsukishima.

"So? What are you gonna do? You can't exactly fight without a sword, can you?" Ginjo commented. "Tsukishima, can you use your powers to help?"

"Well, I can try." Tsukishima sighed. He really didn't want to be involved in any of this but he didn't have much of a choice. He summoned his 'Book of the End' and a green flame flickered as he manifested his blade. Orihime opened up her 'Soten Kisshun' a bit and Tsukishima stabbed Ichigo's sword. However, electricity seemed to crackle around it and Tsukishima had to remove his sword.

"Unfortunately, it seems my powers to insert myself into anyone and anything's memories won't work. Perhaps because it was broken by Yhwach?"

"Thanks for trying anyways." Ichigo said, taking out both parts of his sword.

"What do we do then? If you fight in the state you're in..." Renji spoke.

"Ichigo, you might have to sit this battle out." Rukia chimed in. She didn't want Ichigo to hurt himself even more. He seemed to be pretty messed up already from his earlier one-on-one with Yhwach.

"No. I got an idea."

Ichigo stepped away from the rest of the group. He placed the two pieces back together and closed his eyes. A thin black reiatsu began covering him and his Zanpakuto. I reforged those two swords before. Because they were both Zangetsu...and because they were both a part of me. If I just synchronise my reiatsu with Zangetsu's, then...

The thin black reiatsu burst and covered Ichigo in a black pillar which then dispersed, revealing Ichigo in his Bankai, 'Shin Tensa Zangetsu' along with the fixed blade. "Hey, it's nice you're looking slick and all but you're still quite injured." Renji mentioned. "Stay here and let Orihime heal your wounds. We'll go after Yhwach first-"

"No." Ichigo interrupted. "My dad already went ahead. It's best if we all get there to help. Orihime, stay here and heal Ganju and Chad. Everyone else, we're going."

Orihime nodded and continued to heal the two as Ichigo, Rukia, Renji, Ginjo and Tsukishima went through the gate.

- Soul Society -

"Come out, Aizen. I have no time for your games." Yhwach stamped his foot on the ground and send projectiles of dark matter, scattering them all across the destroyed Seireitei. Yet, even after those attacks hit, he still couldn't pick up on his reiatsu nor see Aizen anywhere.

"Hmm..." Yhwach took one more step forward. Suddenly, his right foot wouldn't move. He looked down and was shocked to see it sinking into the ground. "What the hell is-"

He moved his left foot back and it also began sinking. He attempted to move both legs but they wouldn't budge out of the sinking ground. To counteract it, Yhwach then used the dark matter at his feet to blow away the ground he was standing on.

He created a mini crater around him and his feet weren't sinking anymore. "What was that just now?" Yhwach turned to look around when suddenly, he was stuck in place again. Looking down, he saw that the dark matter at his feet created spikes sticking into the ground. Yhwach tried retracting them but the dark matter wouldn't listen. Soon, he felt his whole body paralyzed. The dark matter that was constantly swarming around him suddenly began clinging onto him much tighter, making his whole body feel weighted.

The dark matter from his back rose and grew out. As Yhwach looked up, he was shocked to see the Soul King's Right Hand. A hand with an eye in the centre of its palm, made from dark matter. "H-How?! I absorbed you...There should be nothing left of..." The darkness that was restricting him began seeping into his body.

"S-Stop..." The darkness covered his entire body, leaving him looking like nothing but a mass of darkness.

"STOP!!!!"

Yhwach's eyes shot open as he came back to his senses. Was that...an illusion?

Yhwach became further confused when he saw someone in front of him. It was Aizen...but he was restricted to the chair again. Not only that, but they were in the same position when Yhwach first entered the Seireitei using the gate. Smirking, Aizen said, "I'd like to welcome you...to MY Soul Society."

I've been through this before...what the hell...what is this?!

Is it reality or an illusion? Time rewinded?! Just what is Aizen's Bankai?

To Be Continued in Chapter 681: The Breaking Hypnosis