Yes. 'After' started out as a fan-created story. It caught the attention of many and was transformed into a more formal publication. The fanfic roots can still be seen in its themes and character development.
I'm not entirely sure specifically what 'after fanfic' refers to without more context. It could potentially be about what happens after the events in a fanfic, like the characters' future or the aftermath of a particular plotline in a fan - created story.
The quality of a fanfic after it's done can be all over the place. It might have great grammar and an engaging story, or it could have plot holes and weak characters. It really just depends on the effort and creativity the author put into it.
Not sure. To determine if 'After' is based on a Harry Potter fanfic, we'd need to analyze the plot, characters, and other elements to see if there are clear parallels.
He might have been put on trial. The wizarding court would then decide his fate based on the evidence presented against him. If the court was corrupt or influenced by those who feared Harry's power, he could be wrongly convicted.