User blog comment:Xilinoc/Ch. 682 - The Two Sided World End/@comment-1268838-20160713185757

What we missed was the brilliant off-panel confrontation in which Horse-sama utterly destroyed Chair-sama in a one-on-one fight, thereby freeing Aizen.

I really hope that Ryuken didn't show up just to deliver that arrowhead. The way this is going, it looks like the final confrontation will consist of everybody ganging up on Yhwach, kind of like they did for Aizen in the Arrancar saga. Or, if I had to pull an example from another series, like they did against Father in FMA. Everybody and their mother participated in that one.

It's hard to say whether the silver arrow will be Yhwach's weakness, or if Ryuken just wants it to land the killing blow for poetic justice. Okay, so it's probably both, but Uryu already has The Antithesis. I imagine they will work in tandem somehow, giving Ichigo the opening he needs to, uh, Gestuga Tensho, I guess.

As for Aizen being released, I am actually glad. While Yhwach has plenty of reason to be cocky, blowing up the chair still seemed like a bad move.