Recommendations

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A lot of common themes, here: working in the ML's house to pay off a debt, a hospitalized father, the ML tormenting the FL because of jealousy or not understanding his own feelings.
Recommended by twiz aka unagibento - Dec 27, 2019
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While I was watching The Big Boss, it reminds a great drama I've watched a while ago, Sassy Go Go. Both leads in both shows are similar. They treat each other like enemies at first, but end up becoming friends (or something more). Smart, high scores on school ML and free-spirit FL.
Recommended by whateverlili_ - Dec 27, 2019
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Boys over flowers has F4, extraordinary you has A3. Guys are fighting over the girl they want. They're both set in prestigious schools. If you liked extraordinary you you'll more than likely like boys over flowers too and vice versa.
Recommended by PoTAEto - Dec 27, 2019
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Stranger 2 is the sequel to Stranger.
People might prefer to watch Stranger first before watching Stranger 2 as it is a continuation of the same story with the same characters.

Might I suggest that a requirement of 100 characters for something like this is really too much, I mean what am I supposed to write? Stranger 2 is the sequel to Stranger I think this is abundantly self-explanatory.
Recommended by Rari - Dec 27, 2019
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Well, both shows about love through music with a dude being a musical genius and a girl having natural talent and a pure, honest heart. Both have a satisfying happy ending but with The Liar... you need to watch the after-credits scene. The Cantabile ML is totally different in character, funny, strong and sarcastic as hell, here we've got a more melancholic and supporting dude. Don't get me wrong - the Cantabile Chiaki-dude is supporting but in a different way and his mask agenda seems rude but in a funny way, you can't dislike his duo with Noda because their characters fit each other perfectly in such a romance-comedy. Try it.
Recommended by Sylar_Rose - Dec 27, 2019
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It is exactly the same as it is the season 1.

Although different feelings and casts are inside here.
Recommended by Xinhui_shiho - Dec 27, 2019
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They are very much alike.
Similarities (without spoilers):
-Both male and female leads of both dramas all have a birth secret.
-Strong females
-Both male leads are forced to hide for a living. Rim is locked away in the palace and Nokdu is forced to lay low on islands.
-Female leads are smart
-Both female leads aren't afraid to bad mouth the King

Differences (without spoilers):
-Lee Rim is smart but he's very dependent on others due to being confined most of his life.
-Nokdu is smart and strong, he is independent
-Dongjoo is strong and so is Haeryung however, I would venture to say Dongjoo is stronger

SPOILERS BELOW:
Similarities:
-Lee Rim and Nokdu are both rightful Crown Princes
-Both Rim and Nokdu don't want the throne, they'd rather have a simple life.
-The Queen's (Queen Dowager in Rim's case) are very loving of their son/grandson

Differences:
-The King (the real one, Rim's father) in Rookie Historian is dead
-The King in Tale of Nokdu is alive and tried to kill Nokdu when he was born
Recommended by Halsyeon - Dec 27, 2019
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They have passionate male leads that are head over heels and willing to do anything for their woman
Recommended by Joyce__u - Dec 27, 2019
pretty similar to the fact that it takes place in a high school and there’s a group of students that come together to solve a mystery. In white christmas, a psychologist comes into the high school in this drama, the teacher does but in both cases the students are manipulated into doing things
Recommended by lauriel - Dec 27, 2019
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both have Kim Kang Woo, and both have unique never seen before in kdramas/kmovies plots. one is a futuristic alien story and the other is a supernatural urban fantasy kind of a story
Recommended by XingBack - Dec 27, 2019
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both plots are about people that "accidentally" become detectives. they are both comedy mystery genres and overall a fun watch
Recommended by XingBack - Dec 27, 2019
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I'll just connect both 1st seasons together. they are both fun mystery variety shows that lets the viewers guess along side the participating members.
Recommended by XingBack - Dec 27, 2019
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both dramas are female centered, and their comedic sense is slightly similar. overall both are a fun watch
Recommended by XingBack - Dec 27, 2019
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I love recommending/connecting dramas that have my sense of comedy? they are not over the top but they are ridicules and funny. kim bomi and Jung Bok Dong are kinda similar too xD
Recommended by XingBack - Dec 27, 2019
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both male leads are the sweet dorky kind. while the female leads are different from the usual representation of a female character in dramaworld.
both couple also are a "friends to lovers" kind of a ship~
Recommended by XingBack - Dec 27, 2019