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Hana no Arash and Innocent Man have similarities
-Both antihero main lead.
-Poor guy/rich woman trope
-Revenge
-Makjang-ish
-Time skip

Both dramas deal with characters with terminal illness and tragic love. Both of the characters lied to their lovers to hide their illness.

Similarities

Doppelganger identity but both twins however the other twin have plastic surgery and the other twin has to be an imposter to pose as that twin.

Both Bite Sisters and Hotel del Luna have immortal female lead and both have fashion sense but in Bite Sisters the female lead is immortal because she is a vampire. Besides, it has both interracial relationship between immortal and a human

-Both Makjang dramas
-Both dramas have selfish mother as a protagonist
-Both dramas have the daughter who hates her mother
-About Conglomerate

Both drama have :
>characters have antihero qualities
>characters that lost their own family
>tough past and backstories
>Fake identity to infiltrate and spy the person
>one of the characters are hackers

Taxi driver has more graphic violence. Honeys is written in a lighter tone

Both dramas are twisted makjang drama.
Both dramas have the same themes such as Extramarital affair, illegitimate child, conglomerates, non-straight character and tragic past

FEmale leads being betrayed by their own boyfriend/husband by marrying rich woman. The female leads fall in love with the brother of the rich woman seek revenge.

Both dramas are makjang, dark and about revenge. The FL married/engaged to the ML however the SFL - the villain is jealous to the FL... so she steals and seduce the man and both dramas have the FL who were framed for murder and wrongfully imprisoned. Their children went missing because of the villain. The person they loved were taken by the female villain and has the FL falling in love with the second male lead.

Genesis is similar to Orphan Black: Nanatsu no Idenshi it is about cloned characters with same faces but with different personality and leads with different lives. These dramas are filled with sci fi and action!

? About Love Betrayal
? Queen of Ambition - the FL has a boyfriend and a child however she married a rich man to leave her child and her boyfriend and hides about her true identity
? the FL in Queen of Ambition Joo Da Hae is very similar to ML in That Sun in the sky Cha Min Woo. Both of them left the person they love just to replace them with someone rich they can marry and willing to go to an extent to achieve their success and doesn't mind to trample others. Their spouse doesn't know about their hidden child
?Secret Births
?the ML in queen of ambition Ha Ryu is very similar to Kang In Kyung. They are both hardworking however they were betrayed by the person they loved.
?Queen of ambition stresses on revenge unlike That Sun In the Sky

Both dramas are makjang however, that sun in the sky doesn't focus on revenge and on the other hand Second Husband is more on revenge.
Both dramas have the female lead encountered betrayal by her lover by marrying a rich woman to replace the female lead and the male lead will do anything up to extent for his selfish success!