I personally would write a story about medieval/fantasy, it's by far my favorite genre to write about. I like to read about mystery and sci-fi the most, but my favorite to write about it medieval/fantasy. I'm actually writing a story write now, I started it when I had just turned 13. It's about a man named Grover who finds a scroll by some traveling merchant. The scroll leads him to a long forgotten kindomg known as "Therondia" where he learns he's a decent from that kingdom and has the ability to do magic. Learning that he can do magic frightens Grover as magic has been banned from the world for hundreds of years; the story is called "The Secret Scroll".