They showed off the ED.
It was good. The song is still w/e to me, but paired with the visuals it ends up being a good ED. There has yet to be a bad SxF ED which can't be said for the OPs desu.

The ED also once again makes me wish the source material was more like it. All of the EDs have the same sort of theming in common, but it hardly ever shows up in the actual manga. It's the true bait and switch of this series.