Updates on 22 Dec
JTBC released a new teaser for the upcoming romance drama, She Would Never Know featuring Won Jin Ah and SF9’s Rowoon.
Original post
JTBC’s upcoming web novel adapted drama She Would Never Know (previously known as Sunbae, Don’t Put on that Lipstick) announced premiere date with character posters and teaser.


The drama is a romance story between a sunbae (senior at work) and a hoobae (a junior at work). Yoon Song Ah (Won Jin Ah) is a brand marketer in a cosmetics company who inspires to create her own brand.
Chae Hyun Seung (SF9’s Rowoon) joined the department as a straightforward junior working in the same team as Song Ah.


Lee Jae Shin (Lee Hyun Wook) is the ambitious marketing team director who climbed up the career ladder with his wits and drives to succeed.
Lee Hyo Joon (Lee Joo Bin) is a fashionable individual and a rising star in the photography world. She is also the granddaughter of the cosmetic company’s founder and will cross paths with Yoon Song Ah, Chae Hyun Seung, and Lee Jae Shin in unexpected ways.
Check out the teaser here
The drama is set to premiere on 18 Jan 2020, 9 PM (KST).