The game associates itself mainly with the aesthetics and culture of the 1930-1950s, where there are casinos, mafias, jazz and other things, I suggest making a skin with a reference to Jabami Yumeko from the anime Kakegurui, why exactly her, well, firstly, she is a schoolgirl, like Filia, but the difference is that our main character is a gambler, and Filia is not, but still, a reference to such a theme is appropriate for Skullgirls.