I create that Star-chan design just for the purpose of shipping it with Bill for my frustration, but is likely just gonna be them anoyying and screwing each other! urgh damn why I made my Bill so handsome!!
my idea here is that Star-chan was a pastor that made a deal with Bill to gaing fame as some sort of religious figure, but Bill transformed him into a demon for fuck’s sake, but he gained enough faith on his new self that it made him become a quite powerful demon himself, which was like karma’s kick in the knee to Bill