THE SHORT VERDICT:
You might like this if you’ve read the manga &/or seen the other versions and already know the story, plus you don’t mind a drama that’s trying to be both a manga and a regular kdrama at the same time and therefore seems to have a split personality. Acting is mostly average and random plot points are plenty, but the writers do give quite a fair amount of couple moments as fanservice.
I loved the Japanese version, which helped me to make sense of this version, and I ended up enjoying this more than I thought I would.
This has a niche fanbase. Very, very niche. It just depends on whether you’re in, or you’re out.