When watched the first episode, i thought "Ohh, this is something new" so i kept watching, but then later i realized "Ahh, that's why my friend watched this in 1.5 speed"

I was 10 episodes in, but nothing is happening.. they just kept showing back stories of the characters, showing us what happened and commenting on it, characters kept blaming each other and kept depressing over what they did. I get you're trying to build up these characters for us to care about them, but there's just something about it that it didn't really landed well, hence why i find it boring.

The later episodes where the drama started picking up, but even then there's not much development, but the writer did a ok job wrapping up the show as you're approaching the end of the drama

The characters are ok i think they are well written, but that didn't make up for the story, so.. that's still an L