Wonderful Life(2005)

Wonderful Life is a South Korean drama that begins when Han Seung Wan and Jung Se Jin accidentally swap passports at the airport, setting off a chain of events that changes both their lives. After a chance encounter leads to a drunken night together, Se Jin becomes pregnant and disappears to raise their daughter alone. A year later, the secret unravels at Seung Wan's engagement party when Se Jin arrives with his child. Forced into marriage by their families, the couple must navigate conflicting feelings for other people while learning to build a life together. As tensions rise between Se Jin, Seung Wan, and their respective love interests, Wonderful Life explores how a reluctant family discovers what it means to take responsibility and genuinely care for one another.