Oh hey, another Harem mode Marisa! heheheh.
And this time she does it Megaman style heh? Right up my alley. So about the gameplay...
There's this thing where if you hold jump but bump against a ceiling Marisa'll stick onto it until the time she'd fall if there was no ceiling, which makes it quite wierd but nothing too bad. I think without this "feature" Patchouli's stage's ladder jumps portions would have been way harsher.
Most of the level designs are actually Megaman-like so good job there. There are however a couple of broken things regarding screen borders. Like, in Nitori's stage in water sections you can jump back up to an upper screen (but you fall to the screen below again), then in Reimu's stage at the platform wheels part if you jump above the screen border you straight up die, and when you run through the boss doors Marisa'll be clipped up and run through air (but nothing nasty happens from this).
And then there's shooting. I see Marisa can shoot 4 sets of shots at a time, but if mashing the shoot key, she can't shoot consistently afterward, as if the bullets don't properly despawn offscreen... That's a minor inconvenience, but if it got adjusted/fixed it'd be so great.
But despite all of this, the game isn't bad at all! The bosses in particular are really a blast to fight! If this game gets refined it'd score a 5 out of 5 in my book.
(And to those wondering, Marisa gets piercing shots upgrade from beating charming Patchouli)