[All] Not only did he play two roles, he also sang the OST.

The main character, IU, is the main character, Ae-soon's younger days.

His daughter Geum-myeong also plays two roles exquisitely.

He is also showing off his skills as a singer who can easily handle a world tour.

It is said that he personally sang the inserted song 'Night Walk' that livened up the drama's atmosphere.

As expected, it's IU