ok so i think that there is a pretty good possibility that this is actually some sort of plan created by Aizen.
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Another villain will come along, break into the Soul Society, and give Aizen a "Get Out of Jail Free" card.I agree, I can't wait until he comes back, Aizen makes things very interesting.
He will be freed, he is way smarter than everyone else kisuke and he will get kyokasuigetsu back,i honestly think aizen as a villain is done. hes in prison, and has seals within him.
I think the fact he was laughing about the imprisonment time was because with the hogyoku he had basically become immortal. and also the major god complex he has doesnt permit him to be 'judged' by other people.
as for aizen making things interesting, i disagree completly. he was by far the worst plot device in bleach. his zampaktou's abilities were the reason the plot was so messed up, so disjointed.
I dont mind non-linear plots but the later arcs were fubar. xd
He said he has been training to became to fight Aizen, Desn't mean he is on Par with Aizen and i highly doubt he is.Aizen?
Renji said himself, he had become strong enough to fight on pair with aizen, and i doubt they let aizen train so...
Am I the only one who thinks Aizen should not show up again?