The acting throughout the series is brilliant and she alone deserves a very strong 8. Each of the characters is completely convincing and they don't step out of their roles for a second. It's a pleasure to watch such actors.
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Song Joong Ki as Vincenzo was insane in every meaning of this word. Before starting this series, I was afraid of this casting because who thought of giving a role to a child-like guy? His cute face contrasts enormously with the character's being and actions but it works.... oh it works!
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Kim Yeo Jin as Choi Myung Hee was on the other hand, a typical evil character that you despise from the very beginning, hate in every single episode and watch the drama just to see her bad end ? Nothing more and nothing less to be said about this character.
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Drama had a very strong cast that brought it to the top, but the script itself wasn't fantastic. The story presented was quite trivial and many minor elements could be predicted. The humorous scenes introduced were very enjoyable and balanced well with the brutal ending.

I totally recommend the drama. Why?! Check my blog for more https://my-asian-dramas.blogspot.com/2022/05/sono-vincenzo.html