I Become a Fool When It Comes to My Daughter

I've become a single father!

24-year-old Juwon Lee works part-time at a convenience store and lives alone in his small apartment. One day his uncle passes away and leaves behind a 4-year-old daughter, the cute little Yeondu. Instead of letting her be sent to an orphanage, Juwon steps up and decides to be her new guardian.