N - Your favorite fanfiction or fanauthor
For KHR, I have to go with metisket, and my favorite fic is either Countdown or What We Fought For, both by the same author.
All-time… I want to say maybe Agent Orange, and maybe The Ballad of John Doe (which is a Cowboy Bebop fic)? Though I haven’t read it in years, so who knows if it’s as good as I remember; all I know is that when I first did read it, the characterization and general feel of it just blew me away. It felt completely canon.
P - Invent a random AU for any fandom (we always need more ideas) creativity is not my strong point today, sorry XD
S - Show us an example of your personal headcanon
I tend to write fics about my headcanon, lol. Like for example, I may notice that a certain young baseball idiot looks and acts an awful lot like a certain strongest Arcobaleno/home tutor, and has been subtly (and not so subtly) favored by said tutor on multiple occasions, and was even called a natural assassin by him and even personally trained by him because of their similarities, and I might also notice that there has never been any mention of said baseball idiot’s mother, and I might start wondering what happened to her, and eventually it might lead to me trying to do the math of how the tutor MAYBE JUST MAYBE (before he was babyfied??) might have somehow fathered an illegitimate son with a woman who subsequently died and/or disappeared, and so the tutor ended up leaving the boy with his old friend who recently retired from the business and had been looking to settle down and start a family. I might look at all of that and get ideas and start trying to plan a fic about it, sob