A very convoluted story.

The title is apt. The backstories that span a century tends to be very confusing. But in the end, everything seemed to workout well anyway. I don't care much for it because it's a bit overly used, but I do get it. It's needed for some aspects of the story to work.

I think the love story of the main couple was unrealistic as much as the paranormal aspects of the story. Sure, a doppelganger can be possible but of the same age group from the same community is pretty much impossible.

Then there's that selfless love they've presented first that's very admirable, how did that love turned out to be foolish? The FL was even willing to die for love. ML was willing to give up everything. But then a sudden change of character happened, she kept on pushing the ML away, even up to the point of leaving him and keeping a love child secret. And after turning the world upsidedown, he just let her go. Try it in real life and see where it gets you.

Anyway its entertaining. But I might not rewatch it any time soon.