Recommendations

Both dramas have vengeful rich and powerful heroes.

Both heroes want to destroy the heroine`s father,but in "Roy Lae" the heroines father are dead,so the hero takes vengeance on his three children.

Both FL`s have one sister and one brother,and both FL`s sisters falls for the hero.

There is forced marriage in both dramas.

Both have hate to love relationships!

From the same channel and with a similar short movie like format, Broject has a completely different theme but for those that enjoy light "crime" and funny stuff, you could give it a try.

-Both are noona/age gap relationship
- The relationship started with a secret
- Both leads knew each other through one/both siblings.
- Both leads work in the same building/company

Two very dark and tragic romance stories, where the male lead first dates the best friend of the female lead. In both shows the lead characters are all orphans.

In both stories Nana Komatsu plays a model that goes through trauma. Yume Wo Ataeru is more focused on the way to fame, while Oboreru Knife is more focused on romance.

Very dark stories with cold blooded female leads. Both appear very emotionless, however they have more depth. There's a deep psychological theme going on in both of them aswell as a dark romance.

Ghosts and good chemistry between leads. There are a lot of little mysteries in A Korean Odyssey, whereas in The Ghost Bride there is one big mystery.

They have similar stories: Two little kids are kidnapped, and then raised by two unrelated women. Both women do a great job, so the kids love and see them as their mothers. Now, what are these unwanted mothers? And what to do with all the love they gave and received from the kids?

Both titles focus on a romance between first cousins and how they navigate their feelings for each other.

Both series focus on a forbidden romance between family members. Mistu no Aji features a uncle and niece who have fallen in love while 90 Days of Love they are first cousins.

Both female leads are chefs. Using their amazing skills in cooking they eventually gain power, money and love.

Both are foodie dramas, with the female lead being a master chef.

Chef Fang has more mystery mixed into it. The male lead is the son of a magistrate and they try to solve cases while enjoying the delicious food the female lead makes.

Despite not knowing how this drama ends yet (Feb 2nd 2020), it reminds me a lot of Healer and the way the relationships formed there.
With both shows, you are on the edge of your seat waiting desperately to find out what is going to happen. Healer involves more flashbacks, and they are needed for the sake understanding the plot, so if you don't like flashbacks, maybe not for you - but I would give it a shot just to experience the chemistry between two amazing actors.
The emotional experience is also similar - you can find yourself laughing one minute, and sobbing the next.

Both main female leads have a special ability that makes it possible for them to help an investigation squad. Both dramas deal about murder cases.

Basically the same main lead with a different skill. Instead of being able to memorize everything, she can see sents. Both deal about murder cases, both have a character who is, because of what happened to them, needing the the person with the special ability.