This series reminds me of Baccano or Durarara with characters that could have come from Blazblue. Can't wait for more. And the fact that this show will probably slip by unnoticed with little fanart while that oppai loli from that dungeon harem anime gets over a thousand saddens me.
But it is a known fact that a smaller fanbase is usually more passionate and more interested in the story material itself. That dungeon series you mentioned, most discussions have already devolved into who is best girl. So, to me, that's kind of a win for us.
By the way, the best girl in this series is everyone