Recommendations

They mention several times Queen Seon Duk and Bidam.
Also Bidam actions in Queen Seon Duk have consequences in Six Flying Dragons.

Other similarities:
- Same writers.
- Politics.
- The "bad" characters are also very charming.
- Strong female characters.
- Both dramas tell historical events.
- Almost there is no romance (Is more subtle compared to SFD).
- Action.

They have more things in common, like the treatment of the characters and the drama structure (the sequel A tree with deep roots also follow the same structure).

Both dramas deals with emergencies during rough times, the end of the world.

Also the idear of a natural disaster or the end, in a way, of our world.

Both dramas deals with the idea of progress and the problem of clones or designer babies.

In both dramas, the two main leads have the same fears. And you'll see what happens when you watch them.

same actress plays both female leads. both female leads have douche hat cheating husbands and get divorced. they also both lose a child and have the same fiery temper with some awesome fighting skills. both male leads are single fathers

Both dramas are about marriage between strangers - or almost strangers decided that the best way to deal with the rejection was to get drunk, real drunk and file for marriage

Both dramas are about materialistic women who find true love and realize that money is not everything. Female leads in both, despite being gold-diggers, are likable.

Both are male teacher&female schoolgirl love stories. Both have male leads who have deadly diseases. And both are beautiful.

The series are sequel of the movie. So be sure to watch the Drama series after the movie or it will spoil a lot.

The two works have:

- Protagonists highly intelligent and physically disabled
- Duel of two great strategists in turmoil times.
- Political plots

But in Nirvana In Fire, the plot goes more smoothly.

Both Signal and Pride and Prejudice have a lead who went into law enforcement (cop/prosecutor)to find the truth/get justice for a family member that was murdered/falsely accused. Both dramas have leads that tackle cases as part of a close knit investigative unit. The cases seem to be unrelated but are in fact all related to a greater conspiracy connected to the death of the leads family member.
There are dirty cops/corrupt prosecutors in both. Great chemistry between the younger and older generations in the workplace.

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They both have the psychology aspect but I found it's Okay, That's Love to be much deeper plot while Madam Antoine was lighter and more comedy. Both females leads are bold but while in Madam Antoine she was a fortune teller and he was the psychologist, in it's Okay, That's Love she was the psychologist and he was a writer. Both stories the main characters had love issues and the guys had traumas

Same lead heroine, same gutsy approach to the world more or less - except that our lady in Scent of a Woman starts to forge her own path once she's been told she has six months to live. It is sweet and poignant and may be more tear-inducing than Sam Soon, but still worth it in my opinion.

It's about married couple who broke up and then fall in love with each other again. Also the main lead is a dork weirdo yet so loveable and charming. You'll love this!