My Only One

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My Only One


  • Title: 하나뿐인 내편 / Hanappunin Naepyeon
  • Also known as: My Beautiful Side / My Beautiful Ally / My Only Ally
  • Formerly known as: 아름다운 내 편 / Areumdaun Nae Pyeon
  • Genre: Drama, romance
  • Episodes: 106
  • Broadcast network: KBS2
  • Broadcast period: 2018-Sep-15 to 2019-Mar-17
  • Air time: Saturday & Sunday Night 19:55 (2 episodes back-to-back)
  • Original Soundtrack: My Only One OST


A woman loses everything one day, when she discovers that her parents are not her biological ones, and that they are also murderers. It is the story of someone who will live boldly while putting back together the pieces of her life broken by love. --Soompi


Correlation Chart - Click to enlarge
Main Cast
Do Ran's family
People around Do Ran
Dae Ryook's family
  • Jung Jae Soon as Park Geum Byung (early 80's) (Dae Ryook's grandmother)
  • Park Sang Won as Wang Jin Gook (late 50's) (Dae Ryook's father)
  • Cha Hwa Yun as Oh Eun Young (mid 50's) (Dae Ryook's mother)
People around Dae Ryook
Da Ya's family
  • Lee Hye Sook as Na Hong Shil (mid 50's) (Da Ya's mother)
  • Jin Kyung as Na Hong Joo (mid 40's) (Da Ya's aunt)
  • Jung Tae Ya (정태야) as Jang Dae Ho (Go Rae & Da Ya's father) cameo
  • Kim Kyu Chul as Jang Dae Hoon (Dae Ho's older brother, Go Rae & Da Ya's uncle) cameo
  • Kim Sun Geun (김선근) as Yi Ryook and Da Ya's wedding officiant
  • Park Ha Na as Sung Soo Hyun (Daughter of Q Pharmaceuticals)
  • Jung Hun (정헌) as Seung Joon (Go Rae's friend)

Production Credits[edit]

Episode Ratings[edit]

See My Only One/Episode Ratings


2018 32nd KBS Drama Awards:


  • Each night's broadcast is divided into two 40 minute episodes with a commercial break in between.
  • On December 31, 2018 the extension of the drama from 100 to 106 episodes was confirmed.

External Links[edit]

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Shall We Live Together Saturday & Sunday 19:55 My Prettiest Daughter in the World