Ariya's penult spellcard from her bossfight in Touhou 20: Fossilized Wonders (on Normal difficulty). As was said by someone within the Touhou FnC discord a while back, other than strategically shooting down mini-pyramids for you to make space atop those rising circle bullets, there's not much to route down here.

Setup used: Marisa (G2 + G2 + R1 + G2)