lee seokmin was 24 when he has a girlfriend, And then that girlfriend turned to his wife when he was 26. but then due to seokmin's slightly immature personality, a few fights caused. He was the one to get the divorcement papers and you just agreed. However, as a year and a few months pass by, he regrets his decision after just knowing about his daughter from before. He tries to get back with you, he now has a normal personality, his immature personality just comes up if he wants to.