I liked it, but I felt like I missed too much in the translation of the subtitles. I will probably have to watch it in English and then revise my 7/10 rating accordingly. There were parts that did not make sense, like it jumped around, and the blue X's didn't make sense until they were explained way too late. I will revise my rating once I see it again, if applicable.

edit 2018-02-06: Watched this at the cinema, and I indeed bumped my rating up. I initially raised it to an 8/10 as I understood the events in the first quarter of the film, but as the nuances of the various friendships and how the social structure worked in 6th grade and how it shifted in 11th grade, as well as seeing more of the sisters' relationship, it's a solid 9/10. It's not as great as solid 10/10's I've heard it compared to, but it has amazing standout moments, like when she says [spoiler]I'm trying the best I can[/spoiler] and he can't understand her, but we in the audience could understand her perfectly. Or pretty much anything she says, for that matter. I think what keeps this from reaching 10/10 quality is that perhaps it should have been a series. I felt like we needed more time with these characters, and more time for their relationships to develop organically on screen. What we have feels rushed. But still, for all that, it's a great movie.