I NEVER SIGNED UP FOR THAT ENDING.
The only thing I accept is that they won't be cursed anymore when getting back in a relationship. BUT DAMN.
Also we didn't find out anything else about Denis in the last episode.

The whole series reminded me a lot of "First Love Again" which is another Korean drama.

I must say, knowing it's korean, I didn't expect too much, but that ending was really unfulfilling ? Idk how to feel about it.
There's definitely enough space for a whole season 2, or at least some special episodes.
The series, overall, is pretty good. I liked the costumes, the actors, the acting and even the plot.

A rewatch might have a value is you skip the last episode, just so you could see them together