Recommandations

In both dramas the male lead is connected to the death of the fiance of the female lead. In FFI, the male lead has the dead fiance's heart, while in CFY, the male lead causes the death of the FL's fiance. FFI has more comedic scenes.

In both, the protagonists' families have been in an accident, and both have a fear of water. They are lonely girls who can hardly bear the rainy season.

Zhong Wu Yan is the modern version, the main actress's name is also Wu Yan. And she also has an ugly red mark on her face.

The Ugly Queen is the remake of the movie Zhong Wu Yen, it's the same storyline and same characters. Both drama and movie are light hearted and funny.

They both are about crazy rich family who abuse their power to gain more power and money. They also contain a strong female lead who is supported and helped by the male main lead.

the story is similar in the way how how both boys have a sense of violence and unawareness to social construct yet they both show signs of wanting to redeem themself because of their own consequences in the ending.

- Both are fluffy romances
- Both are college themed (LCDF is based in college whilst MNCS has a college in it)
- Clever ML with an average FL

- Same fluffy romance theme
- PYHMS is cohabitation whilst MNCS is just them sleeping next to each other due to the ML having insomnia
- ML are quiet, cold and talented in their subject area whilst FL are loud, cheery and bubbly.

Both are rather short and lighthearted historical drama from China. I watched I'm a Pet at Dali Temple first and watching Princess at Large reminded me of it and gave the same feeling.
Both dramas have female leads that travel back in time and both male leads have a medical condition that the female lead helps them with and throughout the drama they fall in love.
Also both were subbed by Lan Lan on FB.

Both dramas are the stories of the blessed true king’s rise to power facing many hard trials when he/she goes up from level to level, but sometimes pays high price for it.
Of course, these two dramas have big difference: First King’s Four Gods (aka Legend) is a fantasy with lots of magic, Queen Seonduk is just a historic biopic (So, FKFG is about king Arthur, QSD is about Elisabeth I Tudor). FKFG was shortened and got sudden ending (with lost plotlines), QSD was prolonged and got additional story arc in its final part (thrilling but hard to watch).
Though QSD is a political drama almostly cleaned from supernatural it has many mythological tropes (like sky omens, prophecies etc.). QSD takes some plot twists and typical chacracters from FKFG or from other previous K-dramas about great kings.

Also in both dramas the unification of various Korean kingdoms is a sacred super-goal that justifies any means

They are both dark with romance. In Take Me Home, the romance isn't a central theme, but it's still there. The way that they are filmed give them similar tones.

They are both dark romances with horror, love triangles, and supernatural beings. They have great graphics and are well made, it's a good watch.

Angry Mom is a drama and She's on Duty is a movie, but they both have driven female leads who go undercover as a high school student.

Same fantasy type elements
Male peruses female
Comedy mixed in
Both have the same feel

Koran odyssey is more action packed and intense and love knot is a bit more subdued but still great.

They are both Japanese dramas centered around independent or underground idols and the idol industry.