My Demon

The series depicts the story of a fateful encounter between Do Do-hee (Kim You-jung), a haughty but organised heiress of a conglomerate, and Jeong Gu-won (Song Kang), a demon who is cold and carefree, and who temporarily loses his powers. The couple embark on a contract marriage, agreeing to help each. Over time, their relationship begins to evolve into romance, but not any sooner than they each realise their romance may be dangerous to the other.

Main

• Kim You-jung as Do Do-hee and Wolsim
  • Kim Gyu-bin as young Do Do-hee

1. Do Do-hee is the CEO of Mirae F&B. After her parents died when she was 11 years old, she was adopted by Ju Cheon-sook, the chairwoman of Mirae Group.
2. Wolsim is a courtesan in the Joseon era who fell in love with Seo Yi-sun.

• Song Kang as Jeong Gu-won and Seo Yi-sun

1. Jeong Gu-won is a 200-year-old demon who plots tempting soul-binding contracts with humans, exploiting their vulnerabilities.
2. Seo Yi-sun is a young master in the Joseon era who fell in love with Wolsim.

• Lee Sang-yi as Joo Seok-hoon

Cheon-sook's nephew and CEO of Mirae Investment, an affiliate of Mirae Group.

• Kim Hae-sook as Joo Cheon-sook

The founder and chairwoman of Mirae Group.

Supporting cast

• Kim Seol-jin as Gi Gwang-chol (Masked Intruder)

Supporting

Mirae Group

• Kim Tae-hoon as Noh Seok-min

Cheon-sook's first son who is CEO of Mirae Electronics.

• Lee Yoon-ji as Noh Soo-ah

Cheon-sook's second daughter who is CEO of Mirae Apparel.

• Jo Yeon-hee as Kim Se-ra

Seok-min's wife who is the managing director of Mirae Electronics.

• Kang Seung-ho as Noh Do-gyeong

Seok-min and Se-ra's only son who is the head of Mirae Electronics.

• Park Do-yoon as Austin

Soo-an's son and Justin's twin brother.

• Kang Da-on as Justin

Soo-an's son and Austin's twin brother.

Sunwol Foundation

• Jo Hye-joo as Jin Ga-young

A dancer whose specialty is traditional double-sword martial arts.

• Heo Jeong-do as Park Bok-gyu

The director of Sunwol Foundation who was Goo-won's first contractor 200 years ago.

Mirae F&B

• Seo Jeong-yeon as Secretary Shin Da-Jeong

Do-hee's secretary.

• Park Jin-woo as Han Min-soo

A team leader of Mirae F&B's public relations.

• Lee Ji-won as Choi Jung-mi

An assistant manager of Mirae F&B's public relations.

• Hong Jin-ki as Lee Han-Seong

A new employee of Mirae F&B's public relations.

Other

• Cha Chung-hwa as a homeless woman who was later revealed as the God.

Extended

• Kim Young-jae as Do-hee's father
• Woo Hee-jin as Do-hee's mother
• Kim Seol-jin as Gi Gwang-cheol
• Kim Beop-rae as a boss
• Jeong Soon-won as number two
• Lim Cheol-hyung as Detective Park
• Jeon Sok-chan as Detective Oh
• Seo Sang-won as Pastor Michael
• Joo Suk-tae as Cha Tae-jun
• Lee Kang-wook as Do-hee's blind date

Casting

On January 18, 2023, it was reported that both Kim You-jung and Song Kang have been considering the offers to star in the drama. On April 14, 2023, actor Lee Sang-yi confirmed his appearance in the drama and was preparing for filming.

Filming

The first script reading was held on April 12, 2023.

Part 1

Part 2

Part 3

Part 4

Part 5

Part 6

Part 7

Part 8

Singapore's national newspaper The Straits Times gave My Demon four out of five stars, praising the series for its cast and execution of the plot, and the good chemistry between the lead cast members Song Kang and Kim You-jung. The series ranked second on Netflix's Global Top 10 TV (Non-English) category. It was also the eighth most searched show on Google Philippines for 2024.

Viewership

My Demon : South Korea viewers per episode (thousands) Source: Audience measurement performed nationwide by Nielsen Korea.