A magical hand fan made of feathers, commonly possessed by Tengu. Hauchiwa may resemble a maple leaf, but they are not actually made of leaves.
In folk tales, these fans sometimes have the ability to grow or shrink a person's nose, but usually they are attributed the power to stir up great winds.
Shameimaru Aya from Touhou is one of the more notable hauchiwa-possessing characters, and is frequently depicted with one. While hauchiwa typically have a vaguely leaf-like appearance anyway, Aya's resembles a maple leaf (down to its coloring and use of fewer feathers in order to specifically achieve a leaf-like shape).
Do not tag hauchiwa with leaf fan, as the former is not made out of leaves, despite some hauchiwa having superficially similar appearance to a maple leaf.
Some Tengu characters may carry an actual leaf fan instead of a hauchiwa, e.g. Kurama from Urusei Yatsura. Tag these examples as leaf fan instead of hauchiwa, as they are not made out of feathers.