Story 7,30/10: New, interesting, engaging, yet weak in some parts where it had to be strong.
The main plot that we see a lot in Manhwa but not in K-drama, the parts that were weak are, first :who was the one behind the car accident, we were supposed to feel shoked and sad while with the ML while finding out that the one who caused his big trauma and killed a precious person to him was the only one he trusted from his familly, and that because we didn't get to see much of his interactions with his uncle before. Second: FL's first life that had so much potentiel if they just developped it more, I wished we could see more of it. The ending in the other hand was so good and well done.

Acting/Cast 8,5/10: Shin Hye Sun is a shinning star, I started the drama for her and she never desappoint, her acting was the best part, 2 remarkable scenes of her, dancing with her mother's imagination and crying, and while remembering the death of her sister from her first life, you can't help but feel her emotions. The dance scene between the FL and ML was very beautiful too.
Seeing Maaaama's duo from Mr queen together again was so pleasing, happy to see this ajumma part of the cast.
I'm not a big fan of the ML though he did a good job in acting but the chemistery was lacking.
The child cast was so good, the kids were so amazing, my only problem was the fact that they didn't use a younger actor for the ML's scene with the child FL, it was awkward. The rest of the cast did great.

Music 8,5/10: The OST fits the drama and it was very well placed.

Rewatch value 8/10: I always think that a big factor for determing the rewatch value is the ending, and this one had a great ending so I may rewatch it someday.

Overall: 8/10