I just wrote a one-shot with more than 3k words. It's the longest single part I've written so far. I don’t know, I started with a lot of detailing but ended up writing boring lines because the chapter would have become too long.
I don’t think I’m someone who can write a one-shot without controlling my imagination, because I just keep writing and writing. And I don’t even think I can write very long stories with 40–50 chapters. For now, whatever I write, I think 30–35 chapters would be perfect.