Park Gun Hyung portrays the perfect man in the MBC mini-series, 'I Do, I Do'.

Jo Eun Sung plays the character of Park Gun Hyung who is a gynecologist insisted on enjoying the single life. His plans are turned upside down the day he meets Hwang Ji An, played by Kim Sun Ah. He falls for her and decides to go all in and win her heart. Then when he finds out that she is pregnant with Park Tae Kang's (played by Lee Jang Woo) child, he falls into confusion and distress.

Admist all the drama that is happening in Hwang Ji An's life, he chooses to be her saving grace. Park Gun Hyung comes to her aid as her personal doctor when all the other doctors refused to take her as a patient. Taking notice and care in all the small details in her life, he wins the hearts of the female viewers.

On the most recent episode that played on the 28th, Park is torn by the life changing decision to adopt Hwang Ji An's child as his own. The heart of his character has earned him the nickname 'Angel' among fans.