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'Produce 101' season 2 has not even officially started but the trainee from Maroo Entertainment is already gaining great popularity and attention for his adorable wink. 

Many netizens, already deeply in love with the 'Wink Boy', are doing some research to find out more about him, and there were some golden findings. 

It turns out that Park Ji Hoon was battling with Big Bang 10 years ago. At the time, Park Ji Hoon was in 1st grade and he appeared on the 2nd episode of 'Idol World' with Big Bang.

Park Ji Hoon introduced himself, saying, "I'm Ji Hoon. I have the best face and body." 

However, unlike his confident introductory, Park Ji Hoon suddenly got teary. MC Park Seul Gi encouraged Park Ji Hoon and jokingly asked if his mom made him get on the show. Park Ji Hoon answered yes.

Park Ji Hoon then shed more tears but this time for a 'crying battle' with the members of Big Bang. 

Watch the 'Wink Boy's adorable past in the clip above!