Board Thread:Episode Discussion/@comment-1599757-20151212162645/@comment-3257939-20151212165106

It wasn't Neo. Like I explained Kunrin, Neo's Semblance makes a different sound than the one we heard during Fake Yatsuhashi and this fight. Pay attention to the moment Mercury says There's not going to be a next time Blondie!

The same sound is heard. I think this means it's either Mercury's or Emerald's Semblance.