One snake two tigers(one-shot)

⚠️WARNING⚠️: NON BLOOD-RELATED INCEST, RAPE, DRUGS, CHEATING

Robert and Robbie were two twins who have a very abusive step-father. Their mother married to him when they were 16, but they never liked him. Their mother didn't want to marry him but had to because he was rich, but she cheats on him with his sister but he doesn't really care.