Simulates hanami: cherry blossom (sakura) trees shedding petals that drift and swirl to the ground on shifting spring wind. Four recursively-branched trees are built from tapered cylinders, with blossom clusters instanced as camera-facing sprites at branch tips. 2,500 curved petal planes are recycled as an InstancedMesh, with each petal's fall, sway and tumble computed on the CPU per frame from a per-instance random seed and a shared sinusoidal wind-gust envelope.