u/SupermarketSpare7108

I want to write about two twins who are in rival gangs but they don't know and one of them (Cain) murders the other (Abel) in a fight at night when they're all masked and he doesn't realise its his brother. I know Cain murdered his brother Abel in the bible, and idk whether if I named the brothers in my book that if it would be too obvious one of them is going to kill the other. Any advice would be rly helpful thanks.