User blog comment:Noyas/Aizen's shikai/@comment-1429792-20091228111603

Aizen sorrow z said above "yeah i dont thik it was aizen speed that blinded hitsugaya since the illusion fell apart til after the attack ". This is incorrect. The anime altered that scene. In the manga, Aizen simply speed-blitzed Hitsugaya. The anime changed it to an illusion for some reason.