Let Me Be Your Knight – Cast & Summary

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Let Me be Your Knight - Cast, Summary, Synopsis, OST, Episode, Review

SBS released another drama titled Let Me Be Your Knight on November 7, 2021. This drama starred by Jung In Sun, Lee Jun Young, Jang Dong Joo, JR, Yoon Ji Sung, and Kim Dong Hyun.

This drama is Jung In Sun next drama in 2021 after acting in Not Yet 30. She also became the main cast of the Korean series Eulacaha Waikiki in 2018.

The next cast is an idol actor who joined this drama named Lee Jun Young. He also has appeared in many dramas, such as D.P (2021), Backstreet Rookie (2020), and Goodbye to Goodbye (2018).

Jang Dong Joo also became his first drama in 2021 after appearing in Class of Lies (2019) and School 2017 (2017).

Let Me Be Your Knight became JR first comeback in drama after his last drama in 2016 titled Their Distance.

This drama was Yoon Ji Sung’s first debut as an actor after being discharged from the Military two years ago.

Not only that, this drama became the debut of Kim Dong Hyun in Korean drama besides his idol career.as AB6IX member.

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  • Title: Let Me Be Your Knight /너의 밤이 되어줄게
  • Also known as: I Will Be Your Night / Idol’s Doctor / Noeul Bami Dweeojoolgae / Noeul Bami Doeeejulgae / Aidol Joochul
  • Genre: Romantic, Comedy, Musical Drama
  • Country: South Korea
  • Director: Ahn Ji Sook
  • Producer: Jang Seong Wook, Lee Tae Kyung, Kim Eun Mi
  • Screenwriter: Seo Jeong Eun, Yoo So Won
  • Production Company: Big Ocean ENM, Super Moon Picture
  • Network: SBS, iQiYi
  • Episodes: 12
  • Air Dates: November 7, 2021– January 23, 2022
  • Air Times: Sunday, 23:05 KST
Let Me Be Your Knight - Cast, Summary, Synopsis, OST, Episode, Review

Synopsis of Let Me Be Your Knight

This romance drama began with the story of a famous member and boy band named Yoo Tae In (Lee Jun Young).

His popularity brings into the sleep disruption that makes him always sleepwalking every night.

The problem got worse when he met In Yoon Jo (Jung In Sun), a tour guide who dream of having a house.

On incident make them collaborate to solve Tae In sleep paralyze and Yoon Jo’s wish for having her own house.

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Main Cast 

Let Me be Your Kniight - Cast, Summary, Synopsis, OST, Episode, Review

Lee Jun Young as Yoo Tae In

A famous leader and producer of boy band LUNA. He had a sleep paralyzed due to his busyness and sleep disorder. To solve his problem, he asked someone to become his doctor.

Let Me be Your Knight - Cast, Summary, Synopsis, OST, Episode, Review

Jung In Sun as In Yoon Jo

A cheerful tour guide who dreams of having her own house. She tried to find out another job but trapped in Jun Young problem and suddenly she became his fake doctor.

Support Cast

LUNA Members

  • Jang Dong Joo as Seo Woo Yeon, Guitarist and Sub Vocalist
  • Kim Jong Hyun as Lee Shin, Bassist and Sub Vocalist
  • Yoon Ji Sun as Kim Yoo Chan, Drummer, and Sub Vocalist
  • Kom Dong Hyun as Woo Ga On, Keyboardist and Sub Vocalist


  • Kim Hyung Ho as Sang Hoon
  • Seo Hye Won as Jeong Ba Reun, Yoon Ju’s best friend and Cafe Owner
  • Ha Young as Chae Ji Yeon, Close friend of Lee Shin’s LUNA
  • Kwak Jae Hyung as Representative Moon, CEO of MM Enter
  • Choi Hwa Ni as Gil Soonman, LUNA’s Manager
  • Lee Se Chang as Representative Jang, CEO of Entertainment Agency
  • Park Ji Won as Hyobin, Member of MM Entertainment and Famous Soloist
  • Joo Ah as Kim Yeon Jeong, Broadcast Station WriterOST
  • Luna – Beautifull Breakup

OST (Original Soundtrack)

Trailer of Let Me be Your Knight