There seems to be missing information on this part, after going through every single brothel possible, and making sure Julia doesn't appear again in the ones I already went to, you have to go through every single brothel at least once, for a Julia scene to appear in each brothel respectively with their own Pixel animation, and then go to the Monicabel one as the last Brothel, and that one, is the one that she appears outside of after you're done, not the Genoverse one... There isn't one in Genoverse as a matter of fact.