Here's what you need to know:
1. The story is ridiculous with lots of plot holes and silly deus ex machina resolutions, but also keeps you guessing. It follows tropes and then subverts those tropes. If you don't mind non-sensical plot points, then this might be for you. I gave the story a generous 7 star rating because the characters' choices surprised me several times (in a good way)
2. The best part of the show is the ML. He gets progressively better with each episode and the drama is honestly worth watching just for him. Like other reviewers have said, he's consistent for the whole show.
3. The FMC will frustrate you, but she's not terrible. The actress did the best job possible with the script. That said, she was a bit of a doormat which made me sad. I didn't need her to be badass or whatever, but early on it would've been good for her to have a better reason for falling for the MMC and some self-awareness around how problematic he is. Like, fall for him, sure. But have her question how bonkers it is to fall for a guy like him.
4. You can FastForward all the scenes with the FMC's best friend, they are filler and mind-numbingly boring.

Overall, very entertaining.