SF9’s RoWoon and Won JinAh are the leads of this drama. RoWoon has acted in “School 2017” (2017), “About Time” (2018), and “Where Stars Land” (2018). But he especially gained attention for his good acting with the hit drama “Extraordinary You” in 2019 for which he gained several awards. Many are looking forward to his next project.Won JinAh is mostly known overseas for her lead role in “Life” (2018) with Lee DongWook and “Melting Me Softly” (2019) with Ji ChangWook. Lee HyunWook (“Search”) and Lee JooBin (“Ga DooRi’s Sushi Restaurant”) are also lead actors.RoWoon (born in 1996, 189.7 cm) and Won JinAh (born in 1991, 163 cm) have a 5-year age difference and 26.7 cm height difference.The story of “She Would Never Know” or “Sunbae, Don’t Put On That Lipstick” is based on a popular web novel of the same title of Elizeu published in 2017. The webtoon version (by Cafe Latte and Jinha) was released on Jan. 4 (check for more about it below).Here is more information. She Would Never Know (2021) InformationTitle: She Would Never Know / Sunbae, Don’t Put On That Lipstick/Seonbae, geu ripseutik bareuji mayo /선배, 그 립스틱 바르지 마요Director: Lee DongYoonWriter: ChaeYoon Story by ElizeuNetwork: JTBCRuntime: From Jan. 18# of Episodes: 16Genre: Office romanceLanguage: Korean Summary"It’s the romance that started without me knowing.“It tells the complicated office love story of sunbae SongAh and hoobae HyunSeung who has a one-sided love for her. CastWon JinAh as Yoon SongAhSongAh is a lovely sunbae (28-year-old) who has been working for the cosmetic brand KLAR as a marketer for 3 years.Because of her gentle looks, people come talking to her comfortably but some people also look down on her. She is passionate about her work as a cosmetic marketer and wants to launch her own cosmetic branch.She has been dating the team leader JaeShin in secret for 2 years. SF9’s RoWoon as Chae HyunSeungHyunSeung (27-year-old) has been working for the cosmetic brand KLAR as a marketer for 1 year.He is handsome, smart, considerate, and has good values. He is a good man who is serious about love. He makes people fall for him in less than 10 minutes.He learned good values from his father who is a judge and his mother who is a famous wedding dress designer. Lee HyunWook as Lee JaeShinJaeShin (35-year-old) is the team leader of KLAR marketing team where SongAh and HyunSeung are.He is capable and has been increasing the sales of the brand significantly. He is a good team leader. He looks like he is not lacking anything. However, he has nothing. His mother left him at a young age with his swindler father.He can’t refuse to meet HyoJoo because it was a request from his friend JaeWoon who saved him from his poor situation. Lee JooBin as Lee HyoJooHyoJoo (27-year-old) is the granddaughter of the founder of KLAR. She is a promising photographer who hides her loneliness with her cold look and fancy fashion. She is a lonely person.She is the sister of JaeShin’s friend JaeWoon and he was her first love. She tried her best to win his heart. Teaser & PostersHere is one of the teasers.Here are the official posters. About the Web Novel"Sunbae, Don’t Put On That Lipstick” is the drama adaptation of the popular web novel of Elizeu published in 2017 of the same title. You can read it here in Korean, the first five chapters are free.Here is a look at the cover of the book.Here is the plot of the web novel, it might contain spoilers.HyunSeung has a one-sided love for SongAh (who is one year older than him). He got to see her kissing the team manager JaeShin. However, HyunSeung knows that JaeShin has a girlfriend and realizes that he is a cheater. To protect the girl he likes, HyunSeung decides to tell her about it and also confesses his feelings. She asks HyunSeung to pretend to date her to take revenge on JaeShin. About the WebtoonThe webtoon version of the drama (by Cafe Latte and Jinha) released its first episode on Jan. 4. JTBC studios and Jaedam Media are working together to release the webtoon and the drama together.You can read the webtoon in Korean here. The webtoon was announced to be soon available in Thailand, Indonesia, China, Japan, Taiwan, and France on Naver Webtoon Global Platform. New K-Drama “She Would Never Know” Makes It To The Top Of Naver Real-Time Search KDRAMA STORIES|Jan 19, 2021 Have A Look At The Webtoon Version Of The Drama “She Would Never Know” KDRAMA STORIES|Jan 5, 2021 A Quick Introduction Of SF9’s RoWoon For New Fans From “Extraordinary You” KPOP STORIES|Oct 28, 2019 A Timeline Of SF9 RoWoon’s Height, What Is His Real Height? KPOP STORIES|Aug 5, 2020 SF9’s RoWoon & Won JinAh Spotted Filming For Drama “Sunbae, Don’t Put On That Lipstick” KDRAMA STORIES|Nov 19, 2020