I've started watching this drama, but I've decided to drop it after episode 9 because I'm fed up with all the random twists and turns and doesn't feel like it's worth it. My review is based on those 9 episodes.

Story - the same old Cinderella story: the male lead pretends to be a commoner in order to be treated normally and falls in love with the righteous hardworking woman who sees beyond his condition in life and loves him for who he is. However, unlike Cinderella who was genuinely kind and considerate of others regardless, here the female lead isn't just clueless, too honest and upfront, she's deliberately rude and confrontational. In fact, she's a shrew borderline sociopath. Every time there's a turn of events, she goes from warm to cold and irrational in 3 seconds with a repetitive pattern of violence towards the male lead (must come from her dad). Yet she's portrayed as the victim, wronged by everyone from her own family to her co-workers, when in reality her behaviour isn't okay at all. I felt no empathy towards her.
The reason the male lead falls for her is that she doesn't hide her true-self and they have something in common. He's obviously not normal either.
I don't get why he and the representative would share a house just so he can play daddy to the kid and make up for the past accident. At first I thought the representative only wanted to destroy him, but guess she fell in love with him over the years? Awkward.

Cast - From what I've seen, the male lead and the representative are the best actors here, spot on. The choice of wardrobe and hairstyles also helped in making both look very stylish, sleek and attractive. I also liked the shrink very much and wondered if he wouldn't end up with the female lead's sister, despite the age gap.
All the others I think are just okay... when the female lead laughs, it looks very unnatural. Her sister's acting skills are more convincible, but her looks or make-up aren't that great and she's quite short for someone wanting to model. The police officers are totally forgettable.
The old guy who always pretends to need something so that the lead spends more time with him is good though.

Music - The OST was actually very good. I particularly liked Taru's "Hope you Can Be" and BEAST's "Dreaming" songs.

Rewatch Value - Well, I dropped the drama, but I still liked parts of it. I liked all the scenes where the shrink was in, just too funny. I liked when the female lead's partner started singing on the car's mic for the owner to hurry up and move the car that was incorrectly parked. The kissing scene in the car shortly after that was good fun. I've seen a similar one in a Taiwanese drama where the guy also said "you think there's nothing between us?? There, can you still say that?". Nothing like a kiss to win an argument, haha.