the one and only-1 is a South Korea drama released in 2021 rated 7.9/10 with 16 episodes. This mystery series has been watched by 13,554 viewers.
Key Details
| Country |  South Korea |
| Genre | MysteryRomanceDramaMelodrama |
| Year | 2021 |
| Episodes | 16 |
| Duration | 01:10:00 |
| Rating | 7.9/10 |
| Director | Oh Hyun Jong |
| Main Cast | Ahn Eun Jin, Kim Kyung Nam, Kang Ye Won, Joy |
| Type | Drama |
| Content Rating | 15+ – Teens 15 or older |
Plot & Analysis
Story Overview
When Pyo In Sook was a child, her parents abandoned her with her grandmother who raised her. Her life has never been easy or comfortable. She now works at a public bathhouse scrubbing customer's bodies. Her defense mechanism is to not express her feelings to other people. One day, a doctor tells her she has a terminal illness and will die soon. Even coming face-to-face with her own mortality, In Sook remains emotionless. She begins receiving care at a hospice and meets two women with lives very different from her own: Seong Mi Do, a social media influencer, and Kang Se Yeon, an ordinary housewife who feels lonely and taken for granted. One rainy day, In Sook meets Min Woo Cheon, a contract killer who works at a private detective office. Woo Cheon's cool exterior masks a deep sadness. Each of the three women decides to end the life of one person who has done them wrong before they die, but in becoming friends, their anger begins to subside. When In Sook and Woo Cheon develop feelings for each other, though, she begins to rethink her plans. (Source: VIKI, AsianWiki)
Critical Reception
the one and only-1 has received very positive reviews with a rating of 7.9/10 based on 3,385 ratings. It is ranked #2,568 in popularity.
Frequently Asked Questions
What is the rating of the one and only-1?
the one and only-1 has a rating of 7.9/10 based on 3,385 ratings.
How many episodes does the one and only-1 have?
the one and only-1 has 16 episodes, each approximately 01:10:00 long.
What genre is the one and only-1?
the one and only-1 is a Mystery, Romance, Drama, Melodrama drama from South Korea.
Who are the main actors in the one and only-1?
The main cast of the one and only-1 includes Ahn Eun Jin, Kim Kyung Nam, Kang Ye Won, Joy.
When was the one and only-1 released?
the one and only-1 was released in 2021 in South Korea.
Data sourced from publicly available entertainment databases. Last updated: April 13, 2026.