The last time I did the quest was when it was in the Flash version, which is a few years ago at this point. If I recall, there should have been a choice to give input on Sera's outfit. If it's dumping you back to the store, seems like a bug. Report it.
Alissa is the one that uses Driving Thrust.
The belt you get for Kiyoko is also useful, along with Unbreakable so you can survive long enough to learn all the moves.
My jams are electronica, industrial, rock, synthwave, you name it, I love. I also have a soft spot for some video game soundtracks, Xenogears and Valkyrie Profile especially.
I currently enjoy jamming to this album by Pertubator.
Lethice hits harder then the Minotaur King, but his recovery mechanic was annoying as fuck, so you had to tease him down a couple of times for victory to stick.