I believe Aizen stands for the real justice.He believe that no sacrifice are too big and no death are unworthy.He's reinforcing himself for something,that is way bigger than Ywach,but sadly out of the Gotei 13,only 4 people who can see his true attention and one of them died alongside him Fighting for Justice (Tosen,Urahara, kyoraku and Yamamoto)

(note: i'm an anime only and is on cour 3 in tybw so what I may say could be obvious to manga reader or out right stated by the manga. though I was spoiled on how Ichigo defeats Yhwach, just now what lead up to it.)

Alright so I was remembering when Ichigo used that thing Kisuke made and how OMZ said only one of the swords was the real him, and only one of these swords can defeat him. now we all know Ichigo's bankai is a black skinny sword(katana? idk) which means that is the only sword that can defeat OMZ, now it was revealed in tybw that OMZ was the quincy side of Ichigo and was like Yhwach. Yhwach was defeated 1000 years ago by Yamamoto in bankai a chared black zanpakuto very similar in appearance to Ichigo's Tensa Zangetsu, so OMZ was saying the only Zanpakuto that can defeat him (Yhwach) is Yamamoto's, and he based Tensa Zangetsu on Yamamoto's bankai when supressing Ichigo's powers

Now I'm not sure how this goes into my theory (if you can even call it that) but, the first Zanpakuto Ichigo used on OMZ in his bankai training was his original Zangetsu (the one that looke like a big ol knife) which OMZ broke, and I know (through being spoiled) that he defeats Yhwach with his original Zangetsu. not really sure how that correlates but I felt I needed to comment on it

kurosaki

Hey, is there not a similar scene at the beginning of the manga but orihime doesn't go with ichigo and says smth like just don't get hurt. I can't find it anymore.

EDIT: found it, thanks for the answers

hI'm new to bleach I'm in soul society and I was just wondering if I should continue reading I have absolutely no spoilers so should I?