After picking it up, head down the slope ahead until you reach a fork in the road. At the end of the right path, you can find a purple item, while the left path is the main route.
After obtaining the purple item, return to the main path and follow the Dust in the center.
Walk to the bright spot in the center, where you'll find Memory Flower #3, "Void." After collecting this Memory Flower, follow along the mountain edge to collect two Dust items and materials.

