The Idol Raised on a Back, Now Ruined

'''The legendary man who once turned the stage upside down. The genius producer, Jin Do-hyun. Every song touched by his hand became a hit, and his name became synonymous with music itself. And now— it is time to save Lumis, the most disastrous idol group in the world. But the moment he was about to begin producing, he opened his eyes to find himself five years old? "Who cares about the body? Lumis escaping their 'flop' status? Don't worry about it!" What shrank was his body, but what grew larger was his ambition! Five-year-old Jin Do-hyun's grand operation to save the flop idols begins!'''