Recommendations

Both dramas will show you what teenagers face in their life. The both female leads has a strict/overprotective mother which makes their life more tough.

Lots of twists and turns in both of these shows as they explore ethical concepts and the behaviors of those who are motivated by greed or envy.

Both involve warring families in the business world with high stakes. If you want to see a well-matched pair and a badass businesswoman, Ra Raerng Fai is good. The actors are also more mature/seasoned so the acting is excellent. So Wayree has younger stars and a very controversial start to the story.

#investigation Cold cases/missing people/death
Missing : The Other Side a little "brighter" and have more fantasy elements overall as compared to Signal.
Just watch it ;)

that surreal fantasy vibe,
ethereal male + Female-human
Male fighting off antagonist
Now that I saw the drama poster... It's kind of similar too XD

female lead of both shows fell into coma after an accident when they were young, woke up as an adult. + presence of male childhood friend as romance interest.

Season two must go hand in hand with season one, and fans of season one should give season two a chance. There are some differences between seasons, but the general rule is the same, and although the participants are completely different, I think that in both seasons everyone will find a duo to support.
The climate is very similar too, fun and relaxing.

Both dramas are about insurance fruad and con artists.
While Mad Dog gives the characters good morals and makes them "heroes"/"robin hood" characters, Private Lives gives the character more shady morals. They're more of "antiheroes" than actual good people.
Mad Dog is an exciting drama with action scenes while Private Lives is a drama where everything slowly ties together and poeple fall into traps that have been ever so carefully laid for them.
The chemistry in both is very strong.

both dramas are like the perfect copycat of each other, with only the gender-reversed LOL. Lawless Lawyer is a little more complex with less plot holes and more badass male lead who kicks ass, yasss!

These two have similar vibes. Both FLs from riches to rags, kinda live at ML's place. Both dramas are humorous and beautiful in own ways.

A 3rd season with better sets, bigger props and it’s the best if u have watched all season 1 and 2. The show hosts chemistry become stronger and every one fits in their roles. The game plays improve a lot. Just as season 2 is more upgraded than season 1, so is season 3. Enjoy the 3rd season too.

Both are similar because;

-Both FL have a crush on ML
-Both FL are nervous in front of ML
-Cute romance

The two drama had an almost similar plot that is a doctor time-slipping between two different time periods. But in JIN's case, it was a modern doctor who ended up time-slipping towards the past. To be fair, I would've recc Dr. Jin that was a Korean adaptation of JIN for the sake of sticking to the same Korean setting but I might as well recc the original instead.

In both shows have the rich girl turned poor after the death of her father. Both become homeless and abandoned and somewhat fooled by the wicked, trusted person of the father.

These two dramas have similar storylines, which the main lead who used to be rich suddenly become homeless and poor. In DDSSLLS, it is the main girl. In SKL, it is the main guy.
Both display simple, sweet and fun love story between main couple.