She Would Never Know


  • Title: 선배, 그 립스틱 바르지 마요 / Seonbae, Geu Ribseutik Bareuji Mayo
  • Also known as: Senior, Don't Put on That Lipstick
  • Genre: Drama, romance
  • Episodes: 16
  • Broadcast network: JTBC
  • Broadcast period: 2021-Jan-18 to 2021-Mar-09
  • Air time: Monday & Tuesday 21:00
  • Original soundtrack: She Would Never Know OST


Within the marketing team for a cosmetic brand, a straightforward and sincere junior is drawn to his older colleague, who is not interested in younger men.

User/Viewer Ratings

(7 votes)


Correlation Chart
Main Cast
  • Won Jin Ah as Yoon Song Ah (28, 3rd year Marketer of Cosmetic Brand "KLAR")
  • Ro Woon as Chae Hyun Seung (27, 1st year Marketer of Cosmetic Brand "KLAR")
  • Lee Hyun Wook as Lee Jae Shin (35, Marketing Team Leader of Cosmetic Brand "KLAR")
  • Lee Joo Bin as Lee Hyo Joo (27, a photographer)
  • Lee Kyu Han as Lee Jae Woon (35, Marketing Director of Cosmetic Brand "KLAR")
People around Chae Hyun Seung
  • Wang Bit Na as Chae Ji Seung (37, Hyun Seung's eldest sister/wedding dress shop owner)
  • Ha Yoon Kyung (하윤경) as Chae Yun Seung (33, Hyun Seung's second sister/a housewife)
  • Lee Dong Ha as Kang Woo Hyun (35, Director of Oriental Clinic)
  • Park So Yi as Kang Ha Eun (7, Yun Seung and Woo Hyun's daughter)
  • Choi Jung Won as Ryu Han Seo (35, a chef)
  • Kim Seo Ha (김서하) as Kim Min Sung (29, employee of Marketing Team "Pravelli")
  • Park Han Sol as Lee Se Rim (26, employee of Marketing Team "Bayer")
People around Song Ah
  • Lee Ji Hyun as Oh Wol Sun (52, Song Ah's mother/cafe owner)
  • Kang Hye Jin (강혜진) as Kim Ga Young (28, a salesperson of "KLAR" store)
"KLAR" Marketing Team
  • Ahn Se Ha as Kwon Sung Yun (37, a Vice Chief)
  • Yang Jo Ah (양조아) as Yoo Jae Kyung (33, a Manager)
  • Kim Han Na (김한나) as Ahn Yoo Sun (33, an Assistant)
  • Kim Hye In as Kang Soo Mi (30, an Assistant)
Supporting Cast

Production Crs

Episode Ratings

See She Would Never Know/Episode Ratings


  • Based on the 2017 web novel Senior, Don't Put on That Lipstick by Elise.

External Links

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bf72430ebf5700aee51436e58add1fbf - June 15, 2021 - 2:59:35 pm