Why isn't aizen's arm and torso regenerating already

He only has 3 of the 26 seals on his powers removed.

More importantly, when did Aizen performed the ''ceremony'' of putting Ywach under his Kyokasuigetsu hypnosis?

When Yhwach visited Aizen in Muken.

Well, his Zanpakuto was broken in every future and his body is now his Zanpakuto, so he's kinda just waiting for Tsukishima to stab him and make him healable again. And with his powers sealed, he can't nuh-uh the problem away with reiatsu spam.

Woah I’ve forgotten about his regeneration

Hogyoku buffering. Give it a sec.

Oh its because

Because he probably doesn't care or it's his seals

Maybe it takes time to restore his arm and hole or takes a focus and conscious concentration to heal. But since he's immortal, there's no rush.

Regen is slower without the hoguyoku

it is not aizen?

I think he figured the battle was over and was planning to do it while talking with Ichigo, he turned off kyoka suigetsu too so he definitely let his guard down here

why did senjumaru die to an arrow when she can shake 3 realms with her bankai lol, eat shit aizen glazer. you didnt complain about it then u cant complain about it now, fkn dumbass

La razón por la que está prisiónero es porque es inmortal,no lo pudieron ejecutar de ninguna forma lol