When I watched it I felt that it somehow separated into several storylines, but I couldn't get the point why they continue to exist in the overall story. Tbh the drama, despite the high rate and always being recommended seemed like a huge mess to me. I couldn't watch it as a pure comedy, not only because the slapstick and body humor of the drama were not funny to me, but also because of the thriller line that existed in the story, I don't mention the "family situation", which connected Min Hyuk and Bong Soon. Same as with other parts, I couldn't watch it as pure thriller, because slapstick was shoveled in.

Stalking of Min Hyuk and his need of a bodyguard was obvious, especially in the story it connected him and Bong Soon. Thriller played a role with Bong Soon's power. But what was the point of those gangsters? To laugh at their overacting? THAT made you laugh? Ok. Then I'm the part of viewers who don't get that type of humor.

The series started well. The adorable Park Bo Young is as cute as ever, with her being petite she is well-fitted for the cute contrast - someone small, but can kick ass, a true King Kong Barbie. This humorous part was fun to watch and my main motivation to finish the series. But I talk the contrast of her action moments. I think watching the two main leads was the best part of the drama and my favorite scene was when she princess hugged him :)
Park Hyung Sik (never watched anything with him before) surprised me a lot. Although his behavior was cheesy, but he was adorable when he acted cute. Like a little milk dog brother and his overpowering girlfriend. But to me they fitted well.
But couldn't care less about many other secondary characters and that's the gist of it. Many played okay.

STORY was kinda very contrasting in terms of jumping from something light and humorous to a bloody thriller. I don't say there should be no cross-genre, it just felt really extreme in contrast. But it's a bit obvious that it was created for a reason and purpose. After all Bong Soon is someone who is filled with justice and she gets involved in this case. After all we need some setting that will allow her to achieve her dream - live a "normal" life. But is that normal life actually what she wants.
ROMANCE. Not mad that Bong Soon doesn't start as a blank canvas, she has her unrequited love, but in comparison feels more open with a person who knows about her powers and also this someone rushes to protect her, despite her being that powerful. They have this openness about each other, but also reliance she never felt before.
OST. For some reason I wasn't the fan of music or sound effects of this show. Beats me, but it also influenced my dropping impression.
As for comic relief gangsters. These I could do without. They lowered the quality of this show a lot to me. Like why would you drag them, who cares about them? To get beaten again and again, what's so funny? When they switched to those guys I started to skip their parts in later episodes.

It has such high ratings and I understand that many found it worthy. Partially, it is fine to watch it. Honestly, I watched just for two Parks :) It's all personal opinion.

And desppite some criticism on my side, I'll be happy to watch the sequel.