Historical Context:
Both dramas are set in historical periods:
“Scarlet Heart Ryeo”: Takes place during the Goryeo dynasty.
“The King and the Queen”: Set in the Joseon dynasty

Power Struggles:
“Scarlet Heart Ryeo”:
——Focuses on political intrigue, power struggles, and royal family dynamics.
——The story revolves around a 21st-century woman who time-travels to Goryeo and becomes entangled in the struggle for the throne.
“The King and the Queen”:
——Also depicts power struggles within the royal family, spanning the reigns of King Sejong and Yeonsangun.
——The ultimate prize is the throne, and various characters vie for it.

Romantic Elements:
Both dramas feature romantic relationships:
“Scarlet Heart Ryeo”: The central romance involves the female lead and the princes of Goryeo.
“The King and the Queen”: While it emphasizes power struggles, it also explores love stories within the royal court.

Fantasy and Time Travel:
“Scarlet Heart Ryeo”:
——Incorporates fantasy elements, including time travel.
——The female protagonist’s journey from the present to the past adds intrigue.
“The King and the Queen”:
——Although not explicitly time-travel-based, it delves into historical events with a touch of fantasy.

Similar crime drama where the drama centers on the female main protagonist whose out there to avenge what they had lost

Another Korean drama of Kim Tae Ri who took on the main protagonist role who strived for their goals and faced obstacles they had alongside the way

Both of those dramas are similar, deciphering into the Joseon Era and explaining the male lead as they have the same rags to riches journey with rising to power and how they became to be.