I do not understand why the rating is so low; this is good. I've read so many crazy stupid manhwas with so many praises that I am baffled why everybody is against this one.
Here we have a FL which doesn't change overnight just because she knows what's coming and doesn't act like a god-like know everything because she is already lived that year. She is just human with faults and makes mistakes, but she evolves and her relationship with ML is cute and not forced.
Idea/Story/Length - 8/10: not original. I got the impression I read another 2 or so like this one but this doesn't make it bad, just not that surprising.
It's easy to read and enjoy without forcing your brain out to endure it or having questions unanswered ever/much too long in the story timeline.
After all you can have something original and useless.
Story pacing: I liked it. 9/10
We have 1-start mystery 2-character evolution+relationships 3-ending mystery If you don't wanna read the middle part about the way their feelings form, just skip somewhere around chapters 35-55.
Characters: 9/10
-FL: she is normal! no super memory, no super changing overnight, no super model perfect girl.
-ML: again, normal! he's liked her some time ago, he let his feelings go, feelings rekindle after they spend time together and not in a second because he meets her again.
-Side ch: not so much described, only used for the story to unfold. Most important: not creating useless problems for the main ch and actually are there to help them.
Drawing: 7/10. It's not super crazy awesome, but it's good.
About skipping some screens, there are 2 chapters where we get that we are missing a screen or two, but only that. And that part is not mandatory for the story unfolding.

Kinda boring. But the drawing gets better after a while.