The drama 언더커버 미쓰홍 has recently been gaining strong interest among viewers. It is currently airing on the tvN network, and stars 박신혜, 고경표, 하윤경, 조한결, which created high expectations even before release. In particular, actress 유나 makes a guest role as 홍장미, the younger sister of 홍금보, placing the s