Recommendations

The main male lead came from another dimension and met the female lead on earth falling in love with her. He spends his many lifetime of years on earth looking for the reincarnation of the female lead. The female lead are both popular/celebrities in the final cycle of life and did not recognize the male lead. The male lead love the female lead so much that he protected her with his life and has pure love for her every past lifetime that he met her

Both female leads know more about the male leads than the male leads are aware.
It has so many similarities, apart from the fact that in My Mister we have someone quite broken whereas in Big Issue our female lead managed to rise form that and became someone quite strong.

1: fBoth drama are written by the same screenwriter '
Apart from the fact that one is build around politicians and their secrets, and the other about paparazzis and the things they discover, both dramas are extremely similar. From the character similarity of our male leads are nearly identical, both have a trauma from their past and both are at the bottom. Both meet women with a near identical character, and both women play an equal important part. although in Big Issue it is slightly more.
Definitely give the other a try if you like one of them.

Both deal with corruption with higher ups and revealing a big secret/overall theme. Leads are kind of similar with fiery-ness but both dedicated to the cause.

They are both drama specials that deal with heavier topics when it comes to love relationships. Both have great cinematography and thoughtful plots.

Both series have the same girl play different characters in each episode that consists of unconnected stories.

They are both about twin brothers that take each other's places. In Your Honor, Suho works as a judge and Kangho's been to jail 5 times. In Sirius, Shinwoo works as a Chief Detective and Eunchang just got out of jail. They have very similar plots.

both dramas have suspense, antihero characters and an intriguing plot, if you like the one then you'll enjoy the other

both dramas are full of suspense and feature antihero characters as well as an intriguing story line and a plot that lets you guessing

- They both have a revenge like plot where the families of both leads were negatively impacted.
- They both have good OSTs
- They both have good cinematography

I personally prefer Lion Pride over behind your smile but they are both pretty good shows.

In both the male lead is physically very fit and a good fighter and with his skills he rescues the female lead from danger. He watches over her and she feels protected because he is there for her. The antagonists in both are scheming politicians, so the male and female leads are helping the good side win.

From the same HIStory series so a bit of a similar thread is expected between series. The similarity between the two series is when two step-brother relationship grows beyond the familial and buds into something more.

Very similar storyline where two step brothers come together and a familial relationship grows beyond and evolves into something more.

Basically the same show but with different contestants. Both seasons are to create a boy group, both seasons have 101 contestants and both have interesting performances.

Very similar dramas in a lot of ways. Without giving away spoilers - the main leads stories have similarities and the same dark tone, same motives like trying to get over each other, lack of communication, dealing with loss and not a whole lot of romance, beware. The second leads serve as lighthearted romances to balance the heaviness of the main leads stories. Both dramas are very realistic with imperfect well written characters, some grow, some never change. I feel I really knew those people personally, ached with them and will miss them. Personally TTC touched my heart more.