The Y-Data, also known as the Y Data, is information described as the "Root of the Miltian Conflict". It is said to be the entire log of Joachim Mizrahi which composed his entire research. Dialogs surrounding it suggest that this data is vital to the Zohar Project. Having analyzed the Fragments of Lemegeton that Grimoire Verum had left behind in the era of Lost Jerusalem, Joachim Mizrahi created the Y-Data.