Istaroth, also known as Tokoyo Ookami is the Ruler of Time among the Four Shades of the Heavenly Principles.[1] She is known by a plethora of titles, including the God of Moments,[1] "the thousand winds of time" (or simply "the thousand winds"),[7] and the "undying wind".[7][8]

She has been worshipped in Mondstadt and Enkanomiya both before and concurrently with the rise of The Seven.[1][9] However, the worship of Istaroth or even the knowledge of her existence has been all but forgotten in Teyvat,[10] though her legacy has been subtly preserved through phrases related to "the winds of time."[11][12] The Enkanomiyans continued to worship her after their island sunk beneath the surface world, seeing her as the only one who had not forsaken them.[1] Later, this worship faded following Orobashi's appearance, and disappeared completely after the move to Watatsumi Island.