In Kimchi Cheese Smile, there was an episode with Hyun Jin and a little girl who looked like Yeon Ji, why did they both end up standing by that coffee machine but couldn't see each other?
Didn't the little girl write her name Shin Yeonji on the counter at the end? This episode is about two people from different eras meeting, yet the next day they go back to their own eras, when Hyun Jin was courting Yeon Ji, who was still into Ki Joon at the time, and who had been into Ki Joon since she was a child, the association makes Hyun Jin meeting the childhood Yeon Ji a bit deep.