I'm very happy you enjoyed it, heheheheh~ And YES, Guts really did such an incredible job with the art—I am indeed partial to the monochromaticity, lol—and Rom likewise with the sound effects! They truly brought my wretched little girls to life far better than I could've ever hoped for~
As for Nicole's perfume, I must confess I know little about high-end fragrances, but you can imagine her wearing some very expensive brand that people know chiefly because of some celebrity, influencer, or social media trend, heh.