I tried an IN Hard run, managed to get to Kaguya with one life left and held on until Salamander Shield, so hooray for me, but that's not the point.
The point is, I finally found out why Marisa's hip-bump is a thing in the fighting games. I dashed forward in Stage 4 as Boundary Team to get resources, having forgotten when Marisa returns. Suddenly she charged me and I couldn't even deathbomb in time, that's how off-guard she got me. Just like how Kagerou got me in DDC a couple days ago. (She then managed to drain my ~7 lives down to 3 for Stage 5, and the Inabas managed to get rid of those, leaving me with nothing for Kaguya except bombs I used right away on her first card because I have so much difficulty predicting the paths of those lasers)
The first three digits of my final score for that run were 666, so...I don't think I'm coming back to IN for a while.