I love Percy.
Get Drunk- NC17 (I didn't originally rate it that, though technically it is.). Percy/Harry... 8 chapters long and Percy's a drunk.
Three Nil- NC17. Ron/Draco 12 chapters long. I made Ron a little crazy but it seemed to fit.
Painful Blisters NC17.Draco/Ron.oneshot
Cyanide?R (maybe NC17) Remus/Snape.oneshot
Genetic Defect same as Cyanide. Percy/Ron.oneshot
Black Onyxsame as Genetic. Snape/Harry. technically 16 chapters.
The Articlesmae as Black. Percy/Harry. Still writing.
Apologize NC17. Percy/Fred.oneshot.
Hope you enjoy!