14년 차 천재 연습생의 데뷔 공략

Title: Debut Strategy of a Genius Trainee with 14 Years of Experience MTLed + Unedited Chapter 1 - 250 [Complete] Description: Seo In-su, a genius trainee who failed to succeed as an idol despite his natural talent and effort. With his contract with the system, he has to go back in time seven years and reap both his d...