It turns out that ASTRO's Cha Eun Woo and actress Park Yoo Na of trending drama 'SKY Castle' have a unique pre-debut connection!

Remember how Cha Eun Woo garnered attention for his pre-debut 'Golden Bell' appearance?

It turns out, during that very broadcast, Cha Eun Woo happened to be sitting next to actress Park Yoo Na before her debut, during 'Golden Bell's Hanlim Multi Art School episode!

Park Yoo Na and Cha Eun Woo both graduated from Hanlim Multi Art School. They were also in the same grade, as both stars were born in 1997. Park Yoo Na graduated from Hanlim's modern dance department, while Cha Eun Woo, from Hanlim's media entertainment department. Interestingly, Park Yoo Na debuted as an actress, but Cha Eun Woo debuted as an idol!

What's more is that the two stars also appeared as same year classmates in JTBC's 'My ID is Gangnam Beauty', majoring in chemistry. 

What an interesting series of coincidences!