4/5 chapter. Not that I think anything bad is gonna last, but the chapter wasn´t nonsensical and this development was completely logcal.
If it wasn´t for earler chapters or a different Manga people wouldn´t complain at all.
This was a good chapter by itself. The one complain that could be made would be that we have not a single hint as to how Wendy can be saved, but that rarely happens in Shounen to begin with.
Naruto, One Piece and Bleach reveal their solutions during the fight it´s Shounen writing 101.