Ji Sung appeared in front of Park Suh Joon, his ideal mate. As he transformed as Yo Na, he startled Park Suh Joon.

On the episode of MBC "Kill Me Heal Me" broadcast on Feb. 18th at 10PM, Yo Na (played by Ji Sung) was talking to Oh Ri On (played by Park Suh Joon) when a second personality came out.

Yo Na said, "Oh my, what is this? Why does he call out whenever he is having a tough time and such?" as she started to curse.

Afterwards, she found Oh Ri On and said, "Oh oppa!" and ran into his arms. Finding this, Oh Ri On was surprised and asked, "Cha Do Hyun, is that you?"

Yo Na changed into a pink uniform. Then, she said to Oh Ri On, "Oppa, I want to eat this. Please buy me this." As she even attempted to kiss Oh Ri On, this was a funny scene.

As Ji Sung acts the role of a person with seven different personalities, Yo Na was one of these personalities. As Hwang Jung Eum plays the role of Oh Ri On, the secret doctor, it'll be interesting to see how she navigates these hurdles and develops a relationship with him.