Recommendations

The Main lead in both shows are wrongly accused of a crime they didn't commit. Smile focuses more on the process of the trial, while Nigeru Onna focuses more on the emotions the Main goes through after she's released.

Both are set around the same era.

In both the female lead is strong-minded, beautiful, well mannered and easy to fall in love to. But of course only the male lead started of by not liking her even hating her - always misunderstanding her and not able to see the true her. As feelings start to grow he keeps getting jealous seing her involved with other men.

They are both gender bender dramas and if you liked Bromance then you should definitely watch Hana Kimi which is a classic!

Stories are like siblings trying to win over traps around and defend their love.

Stories are like siblings trying to win over traps around and defend their love.

Stories are like siblings trying to win over traps around and defend their love.

Stories are like siblings trying to win over traps around and defend their love.

Stories are like siblings trying to win over traps around and defend their love.

Stories are like siblings trying to win over traps around and defend their love.

Stories are like siblings trying to win over traps around and defend their love.

Stories are like siblings trying to win over traps around and defend their love.

Both stories about a psychologist falling in love however Heart to Heart it is his patient and Madame Antoine it is a fortune teller
however they both share the common themes of love as well as psychology also some quirky moments and lite comedy.

both tell the story of king Jeong Jo. TFE is action packed film focused on assassination attempts of King jj where Yi san is tell the life history of king jj including famous assassination attemps on his life.both are excellent and worth watching.
TFE has superb cinematography in a historical setting.

Both stories generate from the main characters orchestrated downfall, which forces them to seek revenge on those responsible. However, although it's understandable, they at some point become just as corrupt as those they are seeking vengeance upon. Ultimately, they have to choose... justice or injustice.

Signal although is based in different cases, there is one case based in tha infamous Miryang case and if you're interested there is Han Gong Ju another dark movie about the same case, I recommend you to watch both the movie and this drama you won't be disappointed