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Upcoming Webtoon to K-drama Adaptations in 2021

Lisa Truong Mar 27

Webtoon adaptation has gained massive global success in the last couple of years. From vibrant romance like “True Beauty” to ambitious dreams like “Itaewon Class”, Korean dramas based on Webtoons are truly captivating. Here are some upcoming webtoon to K-drama adaptations in 2021 to look forward to.

“She Would Never Know” or “Sunbae, Don’t Put On That Lipstick”

This office romance adaptation stars SF9’s RoWoon and Won Jin Ah. Yoon Song Ah daydreams about having her own cosmetic line while working as a marketer for a cosmetic brand. She is work-oriented and has her sight on her future. Chae Hyeon Seung is a junior marketer, working together with Song Ah. Hyeon Seung harbors a one-sided love for Song Ah, who declines his romantic advancements because he is younger than her. 

SF9’s RoWoon is known for his roles ‘Extraordinary You’ (2019) and “School 2017” (2017). Won Jin Ah starred in “Melting Me Softly” with Ji Chang Wook in (2019). “She Would Never Know” or “Sunbae, Don’t Put On That Lipstick” is based on the web novel of the same name that was published in 2017. The first episode aired on January 18 and will run for 16 episodes total on JTBC. 

“Yumi’s Cells”

Yumi's Cells

The story of “Yumi’s Cells” is about the life of an office worker, YuMi, through the perspectives of the 200 cells in her brain. Kim Go Eun is confirmed to play YuMi. Kim Go Eun has previously starred in another webtoon to Korean drama adaptation called “Cheese in the Trap” (2016). She is also well-known for her role in “Goblin” (2016). 

The Korean webtoon has over 3 billion views with more than 500 episodes on Webtoon. it is no wonder that it will be adapted into a Korean drama. Studio Dragon and Studio N are in charge of producing the drama. Filming is expected to begin in early 2021 and will air in the second half of the year. 

“Love Alarm 2”

Love Alarm

With the success of “Love Alarm”, Netflix has greenlighted a second season of the webcomic adaptation. Originally, it was supposed to be released in August of 2020, however, due to COVID restrictions, it was pushed back to 2021. Netflix ranked the first season as the number eight most beloved Korean drama in 2019. 

Kim So Hyun, Song Kang, and Jung Ga Ram will continue their roles from the first season. The premise of the webtoon follows a society where an app can tell you who likes you when they are nearby. Jojo tries her best to live her life while fighting past personal struggles. Along the way, she finds herself trapped in a love triangle with Lee Hye HYeong and his best friend Hwang Sun Oh. 

“I Know But”

I Know But

This adaptation of the webtoon of the same name is about Na Bi and Jae On. Na Bi doesn’t believe in love or have any trust in it, but she still wants to date. Jae On isn’t interested in dating, he likes the period before dating where two people just flirt around. They are both university students and Na Bi does her best to hide her feelings for him. Song Kang and Han So Hee are in talks for the leading roles. Song Kang gained popularity through “Love Alarm” (2019) and Han So Hee rose to fame through her role in “The World of the Married” (2020). 

Not much has been released regarding filming and release dates, however, it is expected to air on JTBC in the first half of 2021. 

“Are You Leaving”

Are you leaving

“Are you Leaving?” is a fantastical music romance about young people from different time periods following their musical dreams. SF9 ‘s Chani portrays Park Yeon, a musical genius of the past. Park JungYeon plays Min YooJung, a young girl living in the present working endless hours to survive. N.Flying ‘s Lee SeungHyub is Lee Won, a current idol who was also a musician in his past life. 

The webcomic of the same name was published in 2017. The drama is set to premiere sometime in January of 2021 on Seezn and the channel SKY. It will have 8 episodes. 



This star-studded adaptation reveals the stories of idols in the Korean entertainment industry. It is adapted from the webtoon of the same name that has over 22 million views. Many K-pop idols will be starring in this drama, including: ATEEZ’s Yun Ho, Seong Hwa, JongHo, and San, SF9’s Chani and Hwi Young, U-KISS’s Jun, T-ARA’s Ji Yeon, ex-PRISTIN’s Lim Na Young, Min Seo, Boys’ Republic’s Su Woong, g.o.d’s Danny Ahn and Shim Eun Jin. Jung Ji So will also be in the drama and she is most known for the performance in the “Parasite” (2019). 

This adaptation is set to air in the first half of 2021. 

“All of Us Are Dead”All of Us Are Dead

“All Of Us Are Dead” is based on a webtoon titled “Now At Our School” that was published in 2009. The lead actors are Yoon Chan Young and Park Ji Hoo. The story follows the two leads as they fight through a zombie virus that is spreading around their school. Chang San is an ordinary boy with a crush on On Jo, the most popular girl at school. 

Yoon Chan Young has previously worked on Korean dramas such as “Six Flying Dragons”, “Dr. Romantic”, and “Sill 17”. Park Ji Hoo is a rookie actress that has starred in “House of Hummingbird”, “Sweet Revenge 2” and “Beautiful World”. This Korean drama will air on Netflix as one of their original series sometime in the first half of 2021. This will be another addition to Netflix’s zombie Korean dramas, following “Kingdom”. There is no confirmation of how many episodes this webtoon adaptation will have. 

“Raw” or “My Roommate is a Gumigo”


This webtoon adaptation stars Kang Ki Yong as Shin Woo Yeo and Girl’s Day’s Hyeri as Lee Dam. Woo Yeo is a male gumiho who had roamed the Earth for hundreds of years in the hopes of becoming human. A college girl swallowed his fox bead on accident and the two now have to live together. This drama emphasized Korean’s love of the gumiho mythology. It will

premiere in the first half of 2021 and will be available on iQYI. 

Which upcoming webtoon to K-drama adaptations in 2021 are you most excited for?