User blog comment:Xilinoc/Ch. 552 - The Fundamental Virulence/@comment-1351982-20131008134737/@comment-5398287-20131008211417

Lemurs, isn't it obvious? He brought Ulquiorra back to life with the power of Sōten Fanuguru and used Plotkai, Benihime to extract Reiatsu from Ulquiorra's Segunda Etapa to allow every captain - including Hitsugaya - to magically enter their own Segunda Etapa, complete with exceedingly bishi hair.