Rule 34 Dev - 2girls batgirl batgirl_(cassandra_cain) batgirl_(stephanie_brown) batman_(series) black_and_white black_bat bondage cassandra_cain dc dc_comics female female_only femsub monochrome multiple_girls multiple_subs rope rope_bondage stephanie_brown superheroine tape_gag tied_up zelgadisgw|6402612440