f'(x)
f(x) is a girl group from South Korea that got famous, then got messy. Sulli left because she got tired of being a groupie and wanted to be a real actor.
My mom said f(x) is better than any K-pop group. I said, 'Mom, they’re okay, but they’re not perfect.'
Why did Sulli leave f(x)? Because she had enough of being a background dancer and wanted to be in the front row.
f(x) is like a drama that never ends. There's drama, there's dancing, and there's drama again.