'Romance Supplement' is a romantic comedy telling the story of two people who've spent their childhood together, then later develop feelings of love as adults. This will be Lee Jong Suk's first drama in two years following 'While You Were Sleeping', and Lee Na Young's first drama in 9 years. It's scheduled to air in the first half of 2019. The new drama is especially gaining more attention as Lee Jong Suk is known to be a huge fan of Lee Na Young. He has also named her as his ideal type in the past.