This was one hell of a ride! Seriously though the way how they made all the characters within the Mansion seem preceptive and skilled in their own way just greatly portrays them as badass. I personally love how Remilia is more willing to act as an assistant to the matter and only helped with organizing the weapon that Sakuya was to use. This puts Sakuya in a position to save herself rather then actually just resolving the matter entirely.
Not exactly sure if badass touhou doujins are a more 2010s kinda thing since I rarely see them around these days (or maybe it's just me not having been observant enough :p). Gonna now check out the rest of the Artist's work!