Based on the popular webtoon Sunbae, Don’t Put On That Lipstick, Korean Drama She Would Never Know traces the relationship between senior (sunbae) Yoon Song-ah (Won Jin-ah) and junior (hoobae) Chae Hyun Seung (Rowoon) at a cosmetics company.
| Also Known As: | Sunbae, Don't Put On That Lipstick |
| Directed by: | Lee Dong-yoon |
| Written by: | Chae Yoon |
| Starring: | Rowoon, Won Jin-ah, Lee Hyun-wook, Lee Joo-bin |
| Extended Cast: | Wang Bit-na, Ha Yoon-kyung, Lee Kyu-han, Park Han-sol, Park So-yi, Choi Jung-won, Lee Dong-ha, Lee Ji-hyun, Kang Hye-jin, Ahn Se-ha, Yang Jo-ah, Kim Han-na, Kim Hye-in, Kwon Han-sol, Kim Kwang-kyu, Jeon Gook-han |
| Original network: | JTBC |
| Original release: | 18 January 2021 |
| No. of episodes: | 16 |
| Running Time: | 60 minutes |
| Production Company(s): | JTBC Studios |
| Distributor: | JTBC |
| Source: | JTBC |
