SEE ALSO: Goo Hye Sun reveals she was told "she's too old" when auditioning for the role of Geum Jan Di on 'Boys Over Flowers'

Nam Ji Hyun shared, "Ha Neul oppa and I are around five years apart, but the five-year age gap seemed small because [Kang Ha Neul] oppa treated me very well. I was able to enjoy filming thanks to him."

She also chose her favorite scene: "It was my first time bungee jumping. It was something I always wanted to do so through this drama, I was able to go bungee jumping three times in a row. I had a lot of fun, but Ha Neul seemed like he was a bit scared."

The child actress also handled her kiss scene maturely, sharing, "Since it's acting, it wasn't very embarrassing or anything like that. I was a little nervous because it was my first time doing it, but I wasn't very nervous or anything like that... I'm twenty years old, but I have not experienced my first love yet. It's still an unknown world to me."

Check out the making-of films of the cast as well!