User blog comment:SilverRain/Ichigo's True Strength/@comment-1706259-20130630131928/@comment-2186265-20130705102827

Winning doesn't mean killing. Ichigo used the final getsuga tensho to finish the fight but Aizen thanks to the Hyogyoku was able to survive (just barely). Plus remember what Ichigo said Aizen. Ichigo said that up untill there last battle he hadn't been able to cross blades with Aizen and when he did he stated that from Aizen he felt only solitude. Ichigo guessed that maybe the Hyogyoku didn't reject Aizen. Maybe it only gave Aizen what he wanted: to be "just a Shinigami." At least that's what Ichigo thought. I'll provide a link []