Roman occasionally made snide comments about their familial relationship, but Jerome never acknowledged it. In fact, according to both Heaven and Hell's rules, Jerome should have blasted Roman from the earth ages ago. Angels and demons considered nephilim unnatural and wrong and continually attempted to hunt them to extinction. It was kind of harsh, even with the sociopathic tendencies nephilim tended to have. Roman had been instrumental in saving Jerome recently, however, and the two had struck a deal that allowed Roman to live peacefully in Seattle - for now. If any of Jerome's colleagues found out about this illicit arrangement, there would literally be hell to pay - for all of us. A good succubus would have told on her rule-breaking boss.