okay, so this is what I am trying to do: no focus, no charge no bomb with komachi, which translates to "clear the game with your unfocused dodging ability"
komach is a great character for this challenge because if you clear, if you clear because of your dodging abilites, not because you lucked out and killed an enemy early (like it'd likely be the case with a few other character). I've done a couple runs by now (like 10-15) and this is definitely doable and balls hard, but on the other hand, it's one of the most fun challenges I have taken up upon - I'd say this is on par with the PoFV 90 fps challenge and chiyuri PoDD.
one thing I noticed while playing is that chaining becomes fucking difficult if I have to chase the fairies, so scoring is getting really difficult, since I will basically always have 0 for spell bonus at the end of every stage. I haven't managed to get 50m even once (which is what I believe to be the minimum amount of lives to clear, since first rounds from marisa onwards are auto-losses).
now all that said, I have done a couple credits now (like 10-15) and have been derping around in a lot of them. the last run at me dying at the 00:59 mark in the first yuka round, reimu kicked my ass similarly. I think the only way to make this game any harder to clear is if I played mystia or youmu because they're so fast. even with komachi's slow ass speed I overshoot so many times.