Summary: After all these years, Urahara has finally appeared in front of Aizen, ready to hopefully kick his sorry ass. Aizen starts things off by taunting Urahara about not being able to control the Hogyoku as well as himself, though Urahara doesn’t seem to care. Either way Aizen finally decides talking is stupid, and stabs Urahara in the chest, but of course Urahara is smarter than this, and made a blowup doll to take his place. With Aizen thrown off guard, Urahara starts throwing bakudo kido or holding spells, at Aizen, which completely immobilizes him.
Kubo, he survives. Aizen doesn’t have to care about dodging anymore, thanks to his Hogyoku. However, Urahara was expecting Aizen to be this cocky, so he used a kido seal that traps reiatsu inside of his hands, not allowing it to flow out of his palms. Which results in an enormous explosion that engulfs Aizen.
Final Thoughts: Even though we have all been waiting to see Urahara’s bankai, this is just as good. Urahara doesn’t need these things to kick ass, his skill with Kido alone is all he needs to get the job done.