Bill Cipher

I want to write a serious fanfiction for one of the below fandoms, what would you like to see?
          	
          	>Gravity Falls
          	>Hazbin Hotel
          	>Helluva Boss
          	>Stardew Valley
          	>Project Sekai 
          	>Heathers (Movie or Musical)
          	>Toilet-bound Hanako-kun
          	>Be More Chill (Book or Musical)
          	>Hunter X Hunter
          	>Ride The Cyclone