Scarlet Heart: Ryeo or Moon Lovers: Scarlet Heart. Ryeo is an externally magnificent and psychologically engaging historical drama with elements of romance, time travel, and political intrigue. Set in the Goryeo Dynasty, it follows Go Ha-jin, a modern-day woman sent back in time who becomes engaged in the complicated lives of royal princes competing for the crown.

One of the drama's most appealing aspects is its captivating cast. Lee Joon-gi (I LOVE HIM SOOOOOOOOOOOO MUCH) gives an outstanding portrayal as Wang So, the 4th Prince, capturing his character's development from an outcast to a ruthless yet misunderstood leader. IU as Hae Soo exudes warmth and tenderness, while her portrayal occasionally struggles to match the drama of the historical setting. The supporting actors, particularly Kang Ha-neul as the 8th Prince and Hong Jong-hyun as the 3rd Prince, contribute to the intricate power dynamics and love triangle.

Visually, the drama is beautiful, with stunning photography and extravagant outfits that bring the Goryeo period to life. The soundtrack, too, is unforgettable, adding to the emotional impact of critical scenes.

However, in the later half of the series, the pacing is inconsistent and the characters are underdeveloped. While the early episodes are entertaining, the hurried pace to the finale leaves numerous plotlines seeming unfinished. The time-travel aspect, while intriguing, creates more concerns than it answers, and historical mistakes may irritate viewers knowledgeable with Korean history.

The romance between Wang So and Hae Soo is both a high point and a cause of frustration. Their chemistry is apparent, but the tragic, open-ended climax disappointed many admirers.

Overall, Scarlet Heart: Ryeo is a compelling drama, but its narrative problems and heartbreaking finale keep it from realizing its full potential.