What's more, I recently just see a little bit about the game, and the Spica's little girl gave me a curiosity:
It seems like he carries an umbrella and supposedly comes from space, both details are references that also seem to coincide with another little girl that comes to mind, yes I mean Hat Kid (from A Hat in Time).
I would also like to see an AHiT fangame with a Spica's gameplay XD.