In this series, everyone is chipped with a Security Identification Number (SIN). So those without SINs call themselves "saints".

When I say the series is "violent" I mean action-movie violence, not horror-movie violence. And when I say "vulgar" I mean using the word "cunting" as an adjective ("I'll rip off his cunting head"). Overall, I thought the series was pretty fun. It won't win any awards, but it's a fun pulp cyberpunk read.

https://www.amazon.com/dp/B09SQGK5KT