Stepping onto the set of “Squid Game” season two, Lee Jung-jae felt like he had never left. “Including promotion, I’d been living with Gi-hun for about two years,” said Lee in a recent interview. “I really felt like I was him,” he said in a recent interview.

By now, you’re probably wondering how much you need to remember from the first season before diving into season 2. Luckily (or unluckily for them), most characters from the firs