Moon Embracing the Sun (2012)

In both these sageuk, the crown princess/queen selection is a focal point of the intrigue.
The crown prince/king prince influences on the selection process because he's already smitten.

Both are historical dramas set in the joseon era with fantasy elements (more so in moon sun than rebel). Both have the same vibe of sincere love, fight against corruption. But while The Moon that Embraces the Sun centers around the royals and nobles, rebel is more down to earth with story revolving around the normal folk aspiring to make a change. I love both dramas but feel Rebel has that something special that brings authenticity to it that I have yet to find in any other historical drama (that I've seen).

Both dramas about dark magic and also a historical drama also same actress acting as evil queen mother.

Need more shows where Kim Yoo Jung shows her versatility as a child actress? Grudge the Revolt of Gumiho is for you
There are a lot of elements similar to the stories:
-> Both are sageuk, but both dramas contain fantastical elements (shamans, curses, prophecies)
-> the sweet and talented beautiful young girl believably played by Kim Yoo Jung
-> basically, both Kim Yoo Jung characters entered a place (palace in Moon Embracing the Sun, Yoon’s house and surrounding town in Grudge the Revolt of Gumiho) and her charm and beauty impresses some powerful adults (king in moon sun, head of Yoon household in gumiho) making rival girls jealous
-> there is a sweet childhood love story in both dramas, except in Gumiho, the childhood love story is not the main plot.
-> The guy playing Kim Yoo Jung’s lover in Gumiho is Lee Tae Ri/Lee Min Ho 93 (aka the young version of Yang Myung in Moon Sun)
-> The above basically means that if Yeo Jin Goo (young Hwon) and Kim So Hyun (young Queen Bokyung) have Missing You, then Yoo Jung (young Yeon Woo) and Lee Tae Ri (young Yang Myung) have this drama Gumiho fox child
-> Find the scene where Kim Yoo Jung/Han Ga In are following butterflies?—> there are at least two cute scenes in Gumiho where Kim Yoo Jung and her lover are enjoying fireflies. Both dramas actually have two young couples meet because Kim Yoo Jung’s characters were following insects
-> The main villain family in both dramas both have the last name Yoon. Both fathers wanted to kill Kim Yoo Jung’s characters for their benefit and both daughters are evil, ruthless, and are jealous of Kim Yoo Jung’s characters (especially because the guys they like like Kim Yoo Jung’s characters)
-> SOME SPOILERS: Kim Yoo Jung’s characters both “died” in these dramas, and her lovers in the respective dramas were too helpless to save her. Both dramas also make people feel for the grief of a family/lover, for the death of an innocent young girl.
-> SOME SPOILERS: In both dramas, after the “death” of Kim Yoo Jung’s characters, both characters appear on the lives of other people they had affected when they were young, appearing either as a dream to the people she loved or somehow haunting those that hate her (particularly the evil Yoon girls)
-> Shamans have great involvement to the events in both stories
-> Other actors that appear in both dramas aside from Kim Yoo Jung and Lee Tae Ri/Lee Min Ho 93 are Yoon He Seok (Sungkyunkwan student who became a guard or warrior in Moon Sun/ Kim Yoo Jung’s lover’s dad in Gumiho) and Jung Eun Pyo (Eunuch in Moon Sun, Kim Yoo Jung’s biological dad in Gumiho)
Gumiho does not focus on romance unlike Moon Sun, but it has many elements similar to Moon Sun and has some romances between its complicated characters. This Gumiho show was in 2010, and I firmly believe that it was her experience in this show that helped Kim Yoo Jung prepare for her role in Moon Embracing the Sun

This is more like time travel, where a Joseon Dynasty scholar accidentally transports himself to 21st century into a movie set about Joseon Dynasty & falls in love . It can be considered both historical both modern and includes time travel

Both stories sound similar. The main characters are married in their childhood when the boy was a prince and due to some reason, his wife dies. Which he never forgets. There are rumors that the spirit of his first wife is wandering. A few years later when he becomes king, he meets a girl who looks like his first wife.

both are about kids that fall in love and are separated because of an "evil" family member (father/grandmother) to meet again after a long time when they got old.. also some young actors are the same (Yeo Jin Goo, Kim So Hyun) and I think both are great dramas with a very sad story :)

Quiet and gentle, Min Jae Yi is everything a good daughter of a prominent family should be. Engaged to the son of the Second State Councillor, Jae Yi knows that the only way to bring herself and her family honor is to accept her fate, which she does with grace and charm. Devoting herself to learning everything she needs to know to become a good wife and mother, Jae Yi dutifully prepares for the future. Sadly, destiny has other plans for her future. Four days before her wedding, Jae Yi’s family is murdered. With no one else to blame for the unexpected tragedy, Jae Yi soon finds herself the object of baseless and horrifying accusations. Blamed for the death of her family, Jae Yi might not have had much of a future at all, if fate hadn’t decided to intervene. Bringing the lonely crown prince, Lee Hwan into her life at just the right moment, Jae Yi is saved from a dismal fate, but her salvation comes at a price. Plagued by a mysterious curse, Lee Hwan agrees to help Jae Yi, but only if she agrees to help him break his curse in return. Unable to refuse such an offer, Jae Yi agrees to the prince’s terms, setting them both on an unexpected path toward love. But what chance does their love have of surviving when one of them is a former murder suspect and the other is a cursed prince?

Both are historical Korean dramas that have beautiful cinemaphotography and tell a tale of star-crossed lovers. Both also deal with underlining supernatural themes.

In both dramas main leads meet when they are kids and are separated. Again they meet after long time when they are grown ups. Both are great dramas with sad story but KMHM has comedy. Both the dramas are written by same script writer Jin soo-wan, both are having great OST especially theme song.

Two children fated to be together. Where the female protecting the male in their sleep. Jealousy and evil comes along.

Both couples meet when the ML is still a prince, the FL then is assumed to have died and the ML becomes king, shifting into a harder personality. The two then meet again when the FL returns.

Both dramas contain references to the moon, and Yeo Jin Goo stars in both dramas (the ML in Hotel Del Luna and the younger version of Kim Soo Hyun in Moon Embracing the Sun).

It tells both the heart-fluttering love story and fierce obsession of a King with two opposite personalities and an assassin girl who wants to kill him but ends up falling in love with him.

Crown Prince Sajo Hyun is an intellectual character who uses his innate artistic sense to work as a fashion designer at a downtown boutique while hiding his identity of crown prince. He has a wound deep down in his heart from his childhood due to his oppressive father Sajo Seung. Sajo Hyun’s other personality Ak Hee is a charming character who can easily seduce others, but he is cursed to feel extreme pain when he makes physical touch with others.

Yeon Wol lives a life full of twists and turns, going from an assassin to concubine. Yeon Wol is the royal descendant of the fallen Yeon Dynasty and the only daughter of Yeon Poong Hak. Yeon Wol hides her identity and becomes assassin Gye Ra to avenge her family. While trying to assassinate the king, she falls into a trap set by an unknown person and wakes up the next day with no memory of her past.

The Moon that Embraces the Sun is also a historical drama just like Night's Watchman. They both have fantasy as their main genre.
They also involve Shamans. The main lead actress are both shamans.
The main actor in both dramas is a royal. In TMTETS he is a king, while he is a prince in the Night's Watchman.

Now that I think about it Il Woo act in both but in the MTETS, he is the older prince, in NW he is the younger prince.
I just kept being reminded of TMTETS while watching this drama =D