High4’s Sung Gu teared up as he talked about IU.

High4 appeared on MBC Music’s Idol School set to air on October 28. During the show, High4’s Sung Gu shard the story behind crying in front of IU and hardships he went through before debuting.

High4’s Sung Gu said, “I spent my trainee days with IU. At the time IU told me, ‘I will help you out once you debut,’ and I’m so thankful because she kept her promise by appearing in the music video for Not Spring, Love, or Cherry Blossoms,” revealing that he cried while drinking with IU afterwards.

Sung Gu also shared that he appeared as an extra for over 100 times before he debuted as he dreamed of becoming a singer. MC So Jin commented, “It seems like Sung Gu really worked hard in his life. I hope that he becomes successful as High4,” bringing warm atmosphere to the set.

MBC Music’s Idol School featuring High4, LABOUM and GB9 is set to air on October 28 at 6 p.m.

Photo credit: MBC Music