On the March 15 airing of tvN's 'Life Bar', Mark revealed, "It was 2012. I lived a life where I focused solely on studying. I loved music but never really thought about actually pursuing it."

He continued, "On the day of the global audition, I was off school. Originally, it wasn't an off day but I just happened to be off school. So I went to the auditions and I�made it. It was my first ever audition."

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However, Mark said, "But my mom regrets�it, saying she shouldn't have allowed me to go. The reason is that�I was so young. She thinks she should've kept me by her side up to the age of 20."

Hearing this, MC�Heechul�agreed and said, "That's true. It's nice to succeed faster by debuting early but I think it would be better to debut after experiencing everything at a young age like going on field trips and taking graduation photos. There are so many joyful things at that age but the ones who can't cherish those moments tend to be really lonely."