'The Legend of the Blue Sea' involved in another plagiarism controversy

Previously, 'The Legend of the Blue Sea,' starring Lee Min Ho and Jun Ji Hyun, was criticized for allegedly plagiarizing 'Sherlock.'  It seems to be having a hard time escaping from the plagiarism controversies, because it is now being accused of also copying movie 'Splash.'

The movie 'Splash' focuses on a successful young businessman who falls in love with the mermaid who saved him from drowning in the ocean.  Drama 'The Legend of the Blue Sea' focuses on a genius conman falling for the last mermaid on earth.  

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However, netizens are saying it's not only the basic plot that is similar but also Jun Ji Hyun's behavior as a mermaid, such as learning how to speak like a human from TV, eating with her hands because she doesn't know how to use eating utensils, misunderstanding the traffic signs, and more.  These were previously portrayed through 'Splash's female lead. Netizens are saying the behaviorisms are too similar, like she's just repeating what the other leading lady had done in her own film.  

What do you think?