Recommendations

at first, the both characteres hate each other but end up being married not by love.
they learned to know each other after married together.
the male lead is rude and hatefull at first because he's hurt in both lakorn

A genius but social less competent and less emotional male lead investigates crime cases. The female lead in Stranger is less girly and stronger but also kind-hearted and intelligent. She makes the male lead more sensitive to his own emotions and feelings as well.

Though her characters are very different in the two series, this excellent (if sometimes slow) show was Jin Se Yeon's last sageuk role, for which she earned and received much praise.

While poor reedits on SBS's part make this one somewhat uneven, the core story is also a romance between young lovers who bond partly through their love of painting, and who are separated due to royal machinations.

By far the best sageuk of 2017 (in my opinion) this focuses primarily on the common and slave classes and the corruption of the royal and noble classes. While the plots have little similarity, they are both sageuks highly reminiscent of the recent golden age of sageuks in the mid-late 2000s.

While Park Shi Hoo's involvement is an understandable turnoff for many, The Princess Man is a classic "forbidden love" romance series by the same PD as Grand Prince.

Maids is written by the same writer and features a young woman whose legal status and romances are affected by the political world around her.

Both revolve around family and war
Both are character-driven
Both have relatable characters
Both are emotionally draining

also married as a job and to keep dignity
if you like cohabitation romance
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same story based on manga "itazura no kiss".
same plot,
same characteres,
same feeling but different language.

same story based on manga "itazura no kiss".
same plot,
same characteres,
same feeling
same language.

same story based on manga "itazura no kiss".
same plot,
same characteres,
same feeling but different language.

they're based on the same manga "itazura no kiss".
same plot,
same story,
same characteres,
but different language.

The plot is smilliar both leads fall in love in college and for some reason one vanishes for a certain amonth of time then meet up in there adult life and the story continues

Both are historically based dramas. In both of the dramas, a woman is pretending to be an eunuch, who stays close to a Master of the Throne or the King per say. Both dramas are about the love stories of how the king and the girl develop feelings for each other.