Yes, Nao Katafuchi could be considered a goth artist because they play Darkwave, which is a core subgenre of goth music. Albums like Émergence, Yumegoto, and Émergence (VUZ 022) are examples of their goth sound.
Nao Katafuchi is located in Japan, Tokyo / United States, New York / Germany, active in 1991 — present. You can find more information about Nao Katafuchi on their GothDB band page.