Satsuki Amamiya is a minor character in the Monogatari Series, a Japanese light novel series written by Nisio Isin. Although she is not a central figure, Satsuki is a classmate of the protagonist, Koyomi Araragi. Her role is largely limited to background appearances and occasional references, serving to flesh out the daily school environment. While she does not directly influence the main plot, Satsuki helps to create a sense of realism and depth within the school setting of the series.