Nightmare of Darkness is a Yu-Gi-Oh! GX fanfiction and the sequel to Chaos of The Light. It is a rewrite of Season 4 inserting Payton and Reina as the main ocs with the main pairing being Jadenxoc in a slight friendship and more romance pairing. It is not associated with the official Yu-Gi-Oh! GX series owned by Kazuki Takahash.
The end of the year is coming. But after what happened in the Dark World, the gang is noticing a lot of change in their friend Jaden. He is avoiding them, especially Kylie. Soon things start going crazy when a strange kid, Yusuke Fujiwara suddenly appears claiming that he's always been friends with the gang? What's up with that?
- The title is a reference to Nightshroud bringing Darkness to the world