Perfect Crown
21세기 대군부인 · IU × Byeon Woo-seok
In a 21st-century Korea with a constitutional monarchy, chaebol heiress Seong Hee-joo proposes a contract marriage to Prince Lee An — the second son of the royal family. Two lonely souls from opposite worlds begin an unlikely journey toward each other.
Latest Episode
Secrets of the Palace
⚠️ Spoilers ahead — Su Hee-joo accidentally discovers royal secret documents, and Prince Lee An's true identity begins to surface. In the midst of crisis, the two grow closer...
Read Analysis →Ratings Overview
View All Data →About Perfect Crown (2026)
Perfect Crown (Korean: 21세기 대군부인) is a 2026 MBC Friday–Saturday romance drama directed by Park Jun-hwa and written by Yoo Ji-won. Set in a 21st-century South Korea where a constitutional monarchy exists alongside modern society, the series follows Seong Hee-joo (played by IU), a chaebol heiress who boldly proposes a contract marriage to Prince Lee An (played by Byeon Woo-seok), the second son of the royal family. As their arrangement unfolds, the two lonely souls from vastly different worlds begin to genuinely fall for each other. The show launched to 7.8% nationwide ratings on its premiere, surging to 9.5% in Episode 2 — one of the strongest MBC Friday–Saturday drama openings in years.
Read Episode 1 Recap →Show Info
- Network
- MBC
- Schedule
- Fridays & Saturdays at 21:40 KST, from April 10, 2026
- Episodes
- 16 episodes
- Cast
- IU (Seong Hee-joo), Byeon Woo-seok (Prince Lee An)
- Director
- Park Jun-hwa
- Writer
- Yoo Ji-won
- Premiere Rating
- 7.8% nationwide, 8.2% metropolitan
- Peak Rating
- 9.5% (Episode 2, minute peak 11.1%)
Main Cast
IU (Lee Ji-eun)
Seong Hee-joo
The second daughter of the Castle Group chaebol family. Brilliant but dismissed for her commoner status, she boldly proposes to Prince Lee An to break through social barriers.
Byeon Woo-seok
Prince Lee An (Yi Wan)
The royal family's second son. Burdened by duty yet invisible in the shadow of tradition. Cold on the surface but deeply lonely — he initially rejects Hee-joo, only to find himself moved by her sincerity.
Gong Seung-yeon
Lee Yoon
Lee An's childhood friend with deep ties to the royal family. Her relationship with Lee An grows complicated when Hee-joo enters the picture.
Noh Sang-hyun
Seong Tae-joo
Hee-joo's older brother and heir to Castle Group. Opposed to her contract marriage, he is locked in a quiet rivalry with Prince Lee An.