I do not really watch Philippine drama that much - for they tend to have the same repetitive plot ( and not to mention) they always have too many episodes. Most of them are good during pilot week but after that, they tend to be too draggy with never ending extensions. I saw the teaser while browsing on FB and got curious on how are they gonna execute this one, and so, I decided to watch and now I'm hooked!
This review is for the 20 episodes, I will edit this review once the series ends.

Story: I have been reading manhuas with isekai genre, so this drama really piqued my interest.
The story is not perfect, there are some plots in the story that I don't agree about and find them too shallow, but since the story is still interesting I will just enjoy it.

First:
I do not agree with the professor's reason for sending Klay in the novel. His student cheated (which is obviously wrong) but hey, this is where my problem is at. Klay asked why must she focus on the subject(history on this case) when it doesn't really has anything to do with her course. So as a way of teaching her a lesson on why history is important- he sent her inside a book - so she can experience what Filipinos of the past has experienced.
Honestly speaking, Klay makes sense but the professor has to act like a tyrant. Sure she will learn something from it, she will learn history and learn a lot about life - but still his reason just looks like a tyranny.
I wish she was sent there for different reason or a different way.

Second:
KLAY - You do not have to be a history geek to know about the history of your own country. You do not need to read the whole novel because it's being taught in school, from Elementary to High School. It doesn't take a genius to know that people back then have different mindset, different rule, different law and different culture - yet, Klay doesn't even seem to have even a slight knowledge about that. Twenty episodes and she still doesn't seem to think that she is in different timeline. The way she talked (in English) with the guardia civil about human rights and woman's rights...and the way she acted in those important situations - just doesn't seem normal since most of us(if not all) have the tendency to be careful in unfamiliar place with unfamiliar people yet Klay doesn't seem to have that sense of fear.
Anyway she is funny at times so I do hope they will give her character some development.

What I love about this drama is how they gave life to the characters. I honestly didn't feel anything for the characters in the book... but in this drama...argh.. it made me understand why a lot of people hate the ending of El Fili.

Cast: They did great job in casting.
Barbie really added life in what would of been a dark story.
Dennis is really handsome and charming as Ibarra
And I must say the two have such a strong chemistry it almost feel illegal.
I still haven't seen that strong chemistry between Dennis and Julie Anne - but we cannot really blame them. It's an old fashion love, old fashion relationship, old way of courting and dating - so it may seem boring to some.
Klay also has a cute chemistry with Fidel. Although I am not really shipping them because Fidel almost hit her... if a man tried to hit you then that's already a no,no to me because for me, that would mean they have the tendency to do that again

Cinematography is great, costumes and locations are perfect - kudos to the whole crew.

I just hope this will not fall into the same old style of Filipino dramas that get draggy, boring, cliche, ridiculous and cringy because of never ending extension(due to popularity)

Edit: Changed my rating to 6
Disappointed with the latter part of the series,