DO NOT TOUCH. Will make your fingers disappear.
Aizen walks up to the Kyoraku, but Kyoraku is not intimidated because he has the most important key buried in his heart, and Aizen would be screwed if he tried to kill Kyoraku. Kyoraku has arranged for a bunch of guys to carry Aizen out on a chair. One guy gets overzealous and tries to put another restraint on Aizen and he gets his fingers burned off for his troubles. Aizen wonders why should he help Kyoraku, and Kyoraku states that their interests are about to intersect.
Back at the Soul King's palace, Yhwach tries to attack the Soul King once again but is stopped by Ichigo. Yoruichi then puts a barrier around the two pieces of Soul King that are now held together by Mimihagi. Yhwach questions how Ichigo can oppose him even though Ichigo has Quincy blood, but then confidently states that whether or not things go his way will be up to his eyes to decide.
It turns out Aizen is still very much restrained, and Kyoraku is seasoned enough not to get intimidated. I'm kinda disappointed Aizen didn't pull anything crazy right off the bat. The shinigamis are smart not to unconditionally release Aizen, although I'm not sure how burying the key to Muken's gates is going to keep Aizen in check. Isn't Kyoraku trying to get Aizen on a supervised trip out of Muken? So why would it matter if Aizen had the key to Muken or not? I'm looking forward to see if Aizen's genjutsu can fool Mr. Almighty's eyes.
As for Yhwach, I guess he and Ichigo and friends will fight for a while. All the shinigamis will show up, and Yhwach will release Uryu and other cronies on them. It might be a while until Aizen will get a chance to do anything...