Native Title	달의 연인 - 보보경심 려
Also Know as	Moon Lovers – Scarlet Heart: Ryeo, Scarlet Heart: Goryeo, Scarlet Heart: Ryeo, Time Slip: Ryeo, Daleui Yeonin - bobogyeongsim Ryeo, Dalui Yeonin - Bobogyungsim Ryeo
Director	Kim Kyu Tae
Writer	Jo Yoon Young
Distributor	SBS
Air Time	Monday & Tuesday 22:00
Content Rating	15+ - Teens 15 or older
Runtime	20 + 2 special episodes
Genre	Historical, Romance, Melodrama, Fantasy
Language	Korean
Country	South Korea
Release Date	2016-08-29
End Date	2016-11-01

“Moon Lovers: Scarlet Heart Ryeo” (Korean: 달의 연인 - 보보경심 려) is a 2016 South Korean historical fantasy romance drama starring Lee Joon-gi and IU (Lee Ji-eun). The series is a Korean adaptation of the Chinese novel “Bu Bu Jing Xin” by Tong Hua and its 2011 Chinese drama adaptation. It aired on SBS from August 29 to November 1, 2016, with a total of 20 episodes plus two specials.

Despite mixed domestic ratings, the series became a massive international success, gaining a devoted fanbase across Asia and worldwide thanks to its emotional storytelling, star-studded cast, and high production values.

Premise

The story blends time-travel fantasy with royal court intrigue during the Goryeo Dynasty.

Go Ha-jin (IU), a 21st-century woman, is transported back in time during a solar eclipse. She awakens in the body of Hae Soo, a noblewoman living in the early Goryeo era.

She becomes entangled in the lives of the royal princes of the Wang family, each vying for power, love, and survival.

Among them, she develops complicated relationships with the gentle 8th Prince Wang Wook (Kang Ha-neul) and the brooding yet misunderstood 4th Prince Wang So (Lee Joon-gi).

As rivalries escalate and betrayals unfold, Hae Soo must navigate palace politics, forbidden love, and her tragic fate.

Main Cast

Lee Joon-gi as 4th Prince Wang So (later King Gwangjong) – A scarred, feared prince who reveals his depth and vulnerability over time.
IU (Lee Ji-eun) as Go Ha-jin / Hae Soo – A modern woman trapped in the Goryeo era, caught in a web of politics and love.
Kang Ha-neul as 8th Prince Wang Wook – A kind and intellectual prince whose ambitions grow darker.
Hong Jong-hyun as 3rd Prince Wang Yo – Ruthless and power-hungry, willing to betray anyone for the throne.
Byun Baek-hyun (EXO) as 10th Prince Wang Eun – Playful and childish but deeply loyal.
Nam Joo-hyuk as 13th Prince Baek-ah – Artistic, sensitive, and one of Hae Soo’s strongest allies.
Ji Soo as 14th Prince Wang Jung – Brave and stubborn, with deep feelings for Hae Soo.
Supporting roles include Kang Han-na as Princess Yeon-hwa and Seo Hyun (Girls’ Generation) as Princess Woo-hee.

Themes & Style

Time-Travel & Fate

Explores how a modern woman’s values clash with the brutality of ancient politics.

Tragic Romance

Love stories doomed by ambition, betrayal, and destiny.

Court Intrigue

Power struggles among princes and the sacrifices made for the throne.

Visual Storytelling

Lavish costumes, sweeping cinematography, and memorable OST elevate the drama’s emotional impact.

Reception

Domestic Performance

Ratings in Korea were modest (around 7–8% on average) and the show received criticism for early editing and pacing issues.

International Success

Hugely popular in China, Southeast Asia, and globally via online streaming, where it became a cult favorite.

Critical Response

Later episodes, particularly Lee Joon-gi and IU’s performances, were praised for their emotional weight. The tragic finale cemented its reputation as a heartbreaking yet unforgettable K-drama.

Fun Facts & Behind the Scenes

Adaptation Roots

Based on the Chinese novel “Bu Bu Jing Xin” and its drama adaptation (“Scarlet Heart”), reimagined within Korea’s Goryeo dynasty.

Star-Studded Cast

Featured idols and actors from across K-drama and K-pop, including IU, Baekhyun (EXO), Nam Joo-hyuk, Ji Soo, and Seohyun (Girls’ Generation).

OST Highlights

The soundtrack became iconic, with songs such as:

“For You” by EXO’s Chen, Baekhyun, and Xiumin.
“Say Yes” by Loco & Punch.
“Can You Hear My Heart” by Epik High’s Lee Hi.

These tracks remain fan favorites and boosted the drama’s emotional resonance.

Filming Style

Much of the series was pre-produced (completed before airing), following a trend started by dramas like “Descendants of the Sun.

International Streaming Boom

The drama’s availability on Youku (China) and other platforms contributed to its massive global popularity, even surpassing domestic buzz.

Legacy

Though its domestic ratings were modest, “Moon Lovers: Scarlet Heart Ryeo” has since become a global cult classic, remembered for its tragic love story, emotional OST, and unforgettable performances. It cemented IU as a respected actress and further solidified Lee Joon-gi’s status as a master of historical roles.

Today, it remains one of the most frequently recommended historical K-dramas for international audiences and is often listed among the most emotional K-dramas of all time.