I Became the Youngest Member of Top Idol

"25that's too old to become an idol." Do Seohan, who got eliminated from the successful idol survival audition program Stardust Project'. Giving up his dreams, he is trying to find his way working part-time jobs. When all of a sudden, he wakes up 8 years in the past after an accident. Right before the Stardust Project' started! As the youngest (but most experienced), can he make it to the final lineup this time?