Flurris tells Link that memmbers of the Wind Tribe are very skilled at finding Kinstone pieces. They have so many Kinstone pieces that they do not have room to store them all, wishing others would take some from them.
Link is able to fuse Green Kinstones with Flurris. As it is a Green Kinstone fusion, it is not set to a specific treasure chest, but instead, one of the many possible treasure chests. There is one random Red Kinstone within the game that opens up a location in the Hyrule Castle Garden leading to a Piece of Heart, as well as a random Blue Kinstone that opens up a tree in North Hyrule Field leading to a Fairy Fountain. Flurris is one of the many characters in which Link can make these Kinstone fusions with.