And the process is grueling. When idols refer to their “trainee days,” they usually reflect on how tough the process is. And Gina agrees: “It was harsh and difficult for everybody. You have to be a great singer, a great dancer; you have to look a certain way.”
There’s also commonly a dating ban for both trainees and idols alike, as well as some kind of required dieting. And there’s no set date as to how long the process will last. For instance, BTS’s Jimin trained for 10 months, while Blackpink’s Jennie trained for six years.