I'm Debuting While Grabbing the Collar of a Regressor

When Kang Ha-jin first regressed, he thought he finally had the chance to change his life. 'Who is this brat that just regressed?' Not until he was forced to regress four times! - [ Single Quest 01. ] ‘In Search of the Lost Dream.’ : The fastest way to untangle a knotted thread is to find its starting point. Let's become an idol trainee within the time limit. Remaining time: 57 days. (Base: 60 days) Success reward: Access to clues for regression tracking Failure penalty: 45% increased chance of triggering the 5th regression - I can't step back in life five times. To escape regression, I will become an idol.