This drama really makes you cry like crazy HAHA In every episode you'll find yourself crying, if you're an emotional person like me. I really love the story, although it's a sad ending but it makes me think that a mother's love is very strong. She sacrificed her chance to live with her loved ones just so that her daughter could live peacefully without seeing any ghosts. So that's really heart-wrenching. This drama will make you reflect on your life and more. It has a lot of life lessons you can learn from it. For example, cherish your time with your loved ones because you don't know when you'll leave the world, etc. So that's why I gave a 9.5 for the story plot. Great flow, not too rushed. The rewatch value is 8 although I know it's a really good drama but if you don't wanna experience the pain of the drama again then you may consider not watching it as you'll be stuffing tissues in your nose for each episodes. But it's worth rewatching overall. Acting is great, they were really immersed in their scenes.
Overall this drama is a classic. It's a must watch although it's gonna be very "heavy-hearted" for most viewers. I hope you find this useful :)