A drama with a "bad guy" protagonist isn't something new, but it's still refreshing to watch than watching a lot of dramas with a typical "moral, righteous, persistent, strong hero". Vincenzo makes it very clear throughout the drama that he doesn't care about virtues or justice.

I think all the actors/actresses did a great job in their roles. In the start I did find HCY's (the FL) character a bit unusual. It sometimes did feel cringe at the start. However, it didn't take much time for me to get used to her character and like her. She isn't one of those annoying FL characters. In the end, her weird expressions & gestures didn't even bother me. I personally liked the supporting characters (the people of Geumga Plaza). I know some didn't like them, but I felt without them the drama wouldn't be the same. I do wish the supporting characters had a little bit of more background story added into them. We were given subtle hints about most of them but some of them were unexpected. It would also make sense why they were behaving in a certain way in the present as well if we knew their story in the past.
The same I would say for Vincenzo. I wish his background with the Italian Mafia would be expanded on. It's not really important but it would clear up the minor questions I had about his character. (For example, I thought he had PTSD with those flashbacks in the start, but I turned out to be wrong. Then I took another meaning out of those nightmares.)

As for the writing/story, I'd say there are a few flaws in there. There are some things that I felt logically wouldn't make sense, but I didn't really mind it that much as it wasn't something significant to keep me away from enjoying the drama overall. l did feel towards the end it may have been slightly rushed. I also think that certain actions& decisions by the characters went out of character. But I will say the writer did a great job of not having me bored at all throughout the drama. Some dramas tend to drag out and become boring, but it wasn't the case here. They did a decent job of leaving majority of the episodes in a cliffhanger.

As for the comedy, I didn't really find the drama to be that funny. I did laugh but it was a few times. There were some scenes I understood that it was intended to be funny, but they didn't make me laugh.

This drama did have me question my morality at some times. I was rooting for the ML with his way of taking revenge and thinking the villains deserve what they get. It felt satisfying to watch the villains suffer for the crimes they committed against innocent people. It's the satisfaction that you don't always get in a typical drama with a hero with morals where justice is eventually delivered.

The only reason I decided not to give it a 10, is because I felt it was less impactful. I won't be thinking about this drama for hours/days (even if I was satisfied and enjoyed watching it). I can easily move onto another drama without thinking about this drama and its end. (Plus a little disappointed cause I couldn't really enjoy the comedy aspect)