Can you explain to me what the timeline is in 19 Days cuz I'm kind of confused, like are they still in middle school or did it jump ahead and I didn't notice?
The story began with Jian going to high school and Zhan attending University, it is later revealed that Jian disappeared in their second day of high school and didn’t come back until Zhan’s first year of University. Those were the first strips released, but it “suddenly” changes to their (memories of) middle school life. Most probably we will return to the present after Jian’s disappearance.
I think you can take this two ways: a big flashback thrown or Old Xian begun the story from the ending/middle and then returned it to the beginning (a story with the order of events in disorder)
I hope that explained it? Or if that was you question in the first place, if it wasn’t, please ask again and let me correct myself!
If you want to know the whole story in chronological order, @yaoi-blcd made a post about it some time ago, though I couldn’t really find it…