A Outra Oh Hae Young (2016)

Both the dramas have quiet a different story line, however the romance in both the dramas are interesting and refreshingly different.
Main leads have great chemistry in both the dramas. The supporting characters are also quiet interesting and have their own story line.
Both are light hearted romantic comedy, if you like one don't forget to give the other a try.

Both female leads have similar energy. Both are quite unlucky as well as get into embarassing situations.

Both shows...
1. Have an eccentric FL.
2. Have a ML who's reluctant to get involved with the FL at first.
3. Have a number of misunderstanding happening which eventually brings our leads together.
4. Have two love triangles.
5. Show a secondary couple.
6. FL's family is quite eccentric.

Both female leads are dumped by their finances the day before the wedding and get a 2nd chance at love. Both shows are done by tvN so they have a similar vibe as well!

Both dramas are refreshing and both deal with different aspects of life rather than only concentrating on the main couple.

*may contain spoilers*
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In both drama our fl falls in love first but does so without knowing a very important detail that the ml knows and hides from her until things escalate. Although the secrets arent similar they both have to do with a third person and their involvement with both of our mcs. Family is also an important presence in both drama as is the fact that our ml has an issue that has to do with his brain.

Two women, both named Oh Hae Young, find themselves constantly mixed up in each other’s lives because of their shared name. From confusion over boys and grades in high school to ending up in the same occupation and company as adults, they can't stop running into each other

In Behind Your Smile Zhao Yiting only sees his revenge, but ends up falling for Lei Xinyu in the process. However, Another Miss Oh Park Do-kyung gets his revenge on his runaway bride, but finds out he is mistaken and has spoiled another woman's wedding. He gets entangled in her life and ends up falling for her.

Both are Romantic Comedies with drama.
Both star Seo Hyun Jin. The characters she plays are similar in that they have some insecurities based on something that happened in her school days.
In both, the male lead / possible love interest is her next door neighbor and he owes her a debt for having wronged her. Due to this debt, he ends up spending time with her/being kind to her. Naturally she develops a crush.
The unique part of Another Miss Oh(Oh Hae Young Again on Viki / Another Oh Hae Young on Dramafever) are the psychic visions that the leading man only has about Seo Hyun Jin's character.
The unique part of Let's Eat is the FOOD porn.
Both are really fun Romantic comedies.

Unlucky Ploy is Thai remake version for Another Miss Oh. Love both version. Similar storyline however it have different vibe.

Story line wise its very different plot,

But it involves:
- FL ex fiance breaking off wedding unilaterally
- time line knowledge known bcs of regrets (in miss oh it was ML and saw future, in shining, it was FL that knows future bcs shes traveling back to the past) both are able to do this bcs of regrets

In both dramas the female lead is the the same and has strong chemistry with the male lead.
Both relationships have reasons, why they shouldn't be together. One person has caused the other harm in the past and they need to overcome that.

I loved both dramas equally if I remember. Somehow they both give the similar vibe like feel good movie and gives you butterfly feeling. The main girl in both has crush on the main guys I believe. It’s super cute and fluffy love. I was never bored watching the stories. I believe they both show the work settings a lot so this is another similar thing they both in common. I don’t know why nobody recommended this movie yet. They are both so similar in vining. They both have great osts too.

The male lead in Tomorrow With You travels to the future in a very similar way Park Dokyung from Another Miss Oh has visions of the future.

The biggest difference between the two I would say is the comedy. You won't find as much comedy in Tomorrow With You, though it is a very sweet drama so far.

Both are Kdramas where one of the protagonists has foresight: In Another Miss Oh, the hero has deja-vu (Visions/flashbacks about something that is about to happen in short notice) and in WYWS, the heroine has Prophetic Dreams (Dreams about the near future or distant). Both have romance inside a beautiful plot, great actors and soundtrack.