Board Thread:General Discussion/@comment-2089817-20180503211205/@comment-2089817-20180506041312

The Unmasked databook seems to explain what Segunda Etapa is, supposedly. Someone on reddit translated it because Bleach wiki can't be fucked for anything these days. It said:

"Ulquiorra is implied to be the only Espada who can possibly obtain a second release. Just like how Ulquiorra's Resurreccion, Murciélago, transforms him into something resembling his original Hollow form (same with all Resurreccion forms), Segunda Etapa transforms him into the original form of his species. Ulquiorra subconsciously understood this, which is why he never showed it to Aizen despite being so loyal. This form is also the origin of Ulquiorra's "nihilism"."