The One and Only (Korean: 한 사람만; RRHan saramman; lit. Only One Person) is a South Korean television series starring Ahn Eun-jinKim Kyung-namKang Ye-won and Park Soo-young


DIRECTOR– Oh Hyun-jong

WRITTEN BY- Moon Jung-min


GENRE– melodrama, medical, Romance


COUNTRY– South Korea


RELEASE DATE- Dec.20 2021- Feb 8 2022




Pyo In-Sook (Ahn Eun-Jin) was a child, when her parents abandoned her with her grandmother. Life has not been easy or comfortable for her, She struggle everytime and always unhappy now she works at a public bathhouse, scrubbing customer’s bodies.

On a certain day pyo In-Sook went to the doctor to inquire about her health, she hears from the doctor that she has a brain tumor and that she doesn’t have much time left to live.

she was unable to express her feelings to her grandmother about her health, rather she lied to her grandmother, that she is traveling to Venice her dream country to enjoy herself.


The truth was she got admitted in a hospice, where sick people who doesn’t have much time to live are accepted . Pyo In-Sook meets two patients, Se-Yeon (Gang Ye-Won) and Mi-Do (Joy), at the hospice for women.

Se-Yeon is an ordinary housewife, but lives a lonely life, she wants a divorce from her husband and also wants to make her mother comfortable before she dies. Mi-Do is a popular influencer on social media who wants a happy life before she dies.


Meanwhile, Woo-Cheon (Kim Kyung-Nam) was a child when his father committed a mass death involving his whole father but fortunately for Woo-Cheon he was saved by pyo In-Sook, but life was unfair to him so he got involved in murder cases.

Cheon’s lifestyle completely changed. He works at a private detective office. He does anything, even illegal things and he is not afraid of anything in his life. One rainy night he met Pyo In-Sook and her friends trying to save a child, whose father he was assigned to kill.


Pyo In-Sook found happiness when she later, fall in love with Woo-Cheon but was afraid of the tumor in her head that will soon claim her life.


A terminally ill woman who is so insensitive to life that she does not know what emotions to choose after being sentenced to death.

A mysterious hitman at the bottom of his life who gets entangled in a murder case with In-sook.

A housewife who has led a responsible and ordinary life without being noticed by anyone. After being diagnosed with a terminal illness she begins to live her life for herself.

social media influencer who has been diagnosed with a terminal illness and is faced with an impending end to her glamorous life. Behind her bright exterior she hides an underlying loneliness.



People around In-sook

In-sook’s grandmother.

In-sook’s father who left his daughter after a divorce.

  • Seo Yeon-woo as Ha San-ah

Regional Investigation Unit

A detective from the Metropolitan Police Department of the Seoul Metropolitan Police Agency.

  • Lee Bong-ryun as Hwang Ma-Jin
  • Jang In-seop as Oh Jin-kyu, a detective.

People around Woo-cheon

  • Ahn Chang-hwan as Shin Tae-il

An ally to Min Woo-cheon who has a cautious personality and is a strong and cold-blooded killer.

  • Choi Young-woo as Park Seung-sun

People around Se-yeon and Mi-do

  • Han Gyu-won as Oh Young-chan

Se-yeon’s husband who runs his own business after marrying Se-yeon. He lives a stable life, however his life slowly begins to fall apart when his wife is diagnosed with a terminal illness and enters the hospice ward.

  • Han Kyu-won as Gu Ji-pyo

Mi-do’s boyfriend who is a third-generation chaebol and the planning director of the Eunkang Group. He is a hot-headed person who communicates with the public through YouTube with a personality that is so easy-going that even his friends do not know that he is a chaebol.


Morning Light

A nun for patients in hospice.

A patient who has amyotrophic lateral sclerosis (ALS) disease

  • Kim Soo-hyung as Lim Ji-hoo, Young-ji’s child.
  • Lee Hang-na as Choi Seong-hae
  • Joo In-young as Cha Yeo-ul
  • Sung Byung-suk as Oh Cheon-deok
  • Kim Byung-chun as Doctor Jo
  • Kim Jeong-hwan as Kang Seo-gun
  • Jang Seo-won as Jo Woong-do

A drug offender who received a community service order from the hospice and has an optimistic personality.


Extended Cast

  • Jeon Yi-soo as Ho-seon

The “best friend” of Seong Mi-do but beyond appearances they do not have a good relationship and are not close to each other. She attracts attention due to being an influential person.

  • Baek Hyun-jin
  • Lee Young-jin as Ji Yoon-seo, Kang Se-yeon’s lawyer and classmate.


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