its definately gin who killed aizen , especially after watching this episode


1) gin's move is a spear like move that shoots , if he is able to pierece a human i am sure that person is propelled in the air from the strength of the spear , hence gin speared aizen into the wall
2) gin was aizens leutenant, which is pretty interesting i thought gin was older than aizen, i guess not he knows aizens weaknesses more than anyone because he served under him


interesting episode, i would have liked to see aizen release his sword.. maybe next episode he seems like a really cool album