On the 14th episode of KBS 2TV weekend drama "Bluebird House" (script Park Pil Joo, director Ji Byung Hyun) broadcast on Apr. 5th, Han Sun Hee (played by Choi Myung Gil) told Kim Ji Wan (played by Lee Joon Hyuk) the biggest secret of her life. She said, "You and Eun Soo (played by Chae Soo Bin) are brother sister but you're not related by blood."
Han Sun Hee had finally told Kim Ji Wan her secret in tears. Nonetheless, Han Sun Hee continued by saying, "Eun Soo Is your sister. This is how I raised you guys. You're the first family that I've had. Eun Soo and you aren't related to each other by blood by you're her brother and she's younger sister."
Kim Ji Wan was startled by this surprise confession. He said, "I don't understand what you're saying." With that, it was hard for him to accept this new reality.
Han Sun Hee said, "Just because you're not related to each other by blood doesn't mean that you're strangers. You both weren't born from my stomach but I raised you both." With that, she said how much effort she poured into keeping this family together after her husband had died.