Series synopsis
Yumi's Cells, also known as 유미의 세포들 is a South Korean comedy drama television series that premiered on tvN on September 17, 2021. It ended on May 4, 2026. It was created by Song Jae-jung, Kim Yoon-joo. It stars Kim Go-eun, Ahn Bo-hyun, Kim Jae-won and Jinyoung.
Yumi is a 30-year old, ordinary woman who struggles with expressing her feelings. Told from the perspective of the many brain cells in her head, she experiences growth in both her love life, her career, and finds happiness in the small joys of everyday life.
Premise
Yumi is a 30-year old, ordinary woman who struggles with expressing her feelings. Told from the perspective of the many brain cells in her head, she experiences growth in both her love life, her career, and finds happiness in the small joys of everyday life.
Premise: What is Yu-mi thinking now?
Cast and characters
Leading cast
- Kim Go-eun as Kim Yu-mi
- Ahn Bo-hyun as Ku Woong
- Kim Jae-won as Shin Soon-rok
- Jinyoung as Yoo Ba-bi
- Jun Seok-ho as Ahn Dae-yong
- Park Ji-hyun as Seo Sae-yi
- Lee Yu-bi as Lee Ruby
- Mi Ram as Kang Yi-da
Supporting cast
- Choi Daniel as Kim Ju-ho
- Joo Jong-hyuk as Louis
- Cho Hye-jeong as Baek Na-hee
- Jung Soon-won as Chief Nam
- Sa Moon-young as Love Cell (voice)
- Park Se-in as Producer Jang
- Shim Kyu-hyuck as Reason Cell (voice)
- Park Ji-yoon as Emotion Cell (voice)
- Lee Jang-won as Hunger Cell (voice)
- Shin Ye-eun as Yoo Da-eun
- An Young-mi as Sensual Cell (voice)
- Kim Yeon-woo as Fashion Cell (voice)
Guest cast
- Sung Ji-ru as Kim Man-Sik
- Minho as Chae Woo-gi
- Lee Sang-yi as Ji U-gi
- Yun Yoo-sun as Yu-mi's Mother
- Kim Mi-su as Ja-young
- Park Jin-joo as Hwang Eun-Hi
- Jeon No-min as Yoo Babi's father
- Jeong Yoon-hee as Furniture Saleswomen
- Shim Hye-rim as Alumna (Eps 7, 8)
- Jeon Soo-yeon as Employee (Eps 13)
- Choi Hui-seung as Wedding Guest
Episodes
This series spans 4 seasons with 39 episodes.
| Season | Episodes | First aired | Last aired |
|---|---|---|---|
| Season 0 | 3 | July 22, 2022 | September 14, 2022 |
| Season 1 | 14 | September 17, 2021 | October 30, 2021 |
| Season 2 | 14 | June 10, 2022 | July 22, 2022 |
| Season 3 | 8 | April 13, 2026 | May 4, 2026 |
| Episode | Title | Air date |
|---|---|---|
| 1 | Episode 1 | July 22, 2022 |
| 2 | Episode 2 | September 1, 2022 |
| 3 | Episode 3 | September 14, 2022 |
| Episode | Title | Air date |
|---|---|---|
| 1 |
Episode 1 Cells live inside Yumi's head, a 32 year-old who works at Daehan Noodles' finance department. In her dull life where her main concerns are what to eat or wear, only one thing excites Yumi and her cells — Woo Gi from Sales! He's handsome, gentlemanly, and 5 years younger... Age doesn't matter if he's just a crush, right? Or she thought, but Woo Gi keeps hanging around her. Is this a green light? |
September 17, 2021 |
| 2 |
Episode 2 Yumi gets to go to the flower festival with Woo Gi, alone! However, Ruby keeps following them and disrupts the date of her dreams before it even begins. The ultimate chase between Yumi and Ruby begins. Meanwhile, Woo Gi makes up his mind to ask Yumi the question that has been on his mind. |
September 18, 2021 |
| 3 |
Episode 3 Although his first impression was a total bust, Gu Woong turns out to be more decent than Yumi thought. Yumi's heart seemed to be opening up to the easygoing and honest Woong... But why doesn't he reply? Yumi's mind is coming to all sorts of weird conclusions to understand why Woong didn't reply! |
September 24, 2021 |
| Episode | Title | Air date |
|---|---|---|
| 1 |
Episode 1 After breaking up with Woong, Yumi and her cells are struggling to keep her life together. Although she acts as if nothing happened, Yu-mi is suffering from post-breakup syndrome and Ba-bi comforts her. In no time, a Yoo Ba-bi club has formed in the cell village without Yu-mi realizing... |
June 10, 2022 |
| 2 |
Episode 2 Although Yu-mi was taken aback by Ba-bi's sudden confession, her confidence level shoots up. Yu-mi becomes more preoccupied by Ba-bi and she unconsciously finds herself getting heated up when Ruby sets up a date for Ba-bi. |
June 10, 2022 |
| 3 |
Episode 3 News of Ba-bi's date puts Yu-mi in despair. Yu-mi wishes he doesn't go on the date. But she couldn't tell him in the end... On the day of Ba-bi's date, Yu-mi falls asleep after feeling perturbed the entire day, when a message from Ba-bi arrives. |
June 17, 2022 |
| Episode | Title | Air date |
|---|---|---|
| 1 |
Episode 1 Stuck in a rut, Yu-mi meets aspiring Producer, Soon-rok. |
April 13, 2026 |
| 2 |
Episode 2 Soon-rok continues to aggrevate Yu-mi, which in turn triggers her 'Cell Village.' |
April 13, 2026 |
| 3 |
Episode 3 Yu-mi runs out of patience and decides to confront Soon-rok – yet an unexpected move from Soon-rok confuses Yu-mi’s ‘Cell Village.’ |
April 20, 2026 |
Production
Release
| Original network/platform | tvN |
|---|---|
| First aired | September 17, 2021 |
| Last aired | May 4, 2026 |
| Runtime | 64 minutes |
| Status | ended |
| Schedule | Friday, Saturday at 22:50:00 |