User blog comment:Espada2011/Aizen's power/@comment-4207271-20140405110505

I actually like this theory. I don't know if it was explicitly stated that Kyoka Suigetsu was destroyed, Aizen just thought it had been. The Hogyoku could have easily read the intentions of Kyoka Suigetsu, which would likely want to stay with Aizen, so it makes it possible the only way it could, by binding it to Aizen permanently. Maybe when we saw it fused with his arm, it was partially fused, and then when it disappeared, it was integrated into him? That could also explain why Aizen's eye remained a different colour after the Hogyoku left him.