'Please Come Back, Mister' Rain already knew the secret about his child

On the 13th episode of SBS'"Please Come Back, Mister", Jeong Jihoon (Yoon Park) came to see Dahye (Lee Min-jeong) late at night and asked about his biological daughter.

Jeong Jihoon asked Dahye, "Is Hanna my daughter by any chance". Dahye's perplexed emotion showed in her eyes when she was looking at Jeong Jihoon.

Jeong Jihoon again asked, "I want to hear it from your lips. Hanna knew it already that we looked alike".

As Jeong Jihoon pressed her to answer, Dahye coldly said, "You're rude".

Dahye said, "No, Hanna's dad is Kim Yeongsoo. Her dad whom Hanna misses all the time is her dad Kim Yeongsoo only. It won't change forever".

Han Hong-nan (Oh Yeon-seo) and Lee Haejoon (Rain) were listening to the conversation from a distance. Han Hong-nan asked, "Did you heare what he said?" When she noticed the sad look on Lee Haejoon's face, she asked again, "Tell me the truth. Is there anything that I don't know? Did you know she was Jeong Jihoon's child from the beginning?"

Lee Haejoon answered, "No, I didn't know first. I found out when I came back. I didn't even know they had dated before".

Lee Haejoon explained, "I promised Dahye, because Hanna is my daughter, we should not question about what happened in the past. I thought it's the best way to keep our family then. But I'm a human being, I can't help it. I misunderstood she's dating him again". Lee Haejoon sadly said, "I was giving her difficult time unintentionally".