Cha Do Hyun (played by Ji Sung) learned that Oh Ri JIn (played by Hwang Jung Eum) was none other than his half-sister.

On the episode of MBC "Kill Me Heal Me" (script Jin Soo Wan, director Kim Jin Man, Kim Dae Jin) broadcast on Feb. 18th at 10PM, Do Hyun continued to make a move on Ri On. He continued to ask, "Can't I be a man to you?"

On this day, Do Hyun said, "I'm going to break the contract." With this, he held Hwang Jung Eum's hand and confessed his feelings. However, after finding the picture of Min Suh Yeon (played by Myung Se Bin) next to him, he couldn't help but be extremely upset.

Do Hyun was surprised and said, "Why is this photo here?" Leon also said, "What's wrong?" With this, Leon was also curious as to what Do Hyun's suspicions were.

This was the moment that Do Hyun found out that Ri JIn was the kid in the basement. Do Hyun and Ri Jin each had different mothers and fathers but in terms of the family registry, they turned out to be half-siblings of the Seung Jin family. With this twist In events, it'll be interesting to see how their love affair takes a twist.