Sure. 'A Court of Thorns and Roses' has a similar allure with its complex characters and richly built fantasy world. It also features a strong romantic sub - plot like 'Neon Gods Novel'.
Well, in kurapika and neon fanfiction, a common theme could be the contrast in their worlds. Kurapika is from a tragic background with his clan's destruction driving him. Neon, on the other hand, is a part of a wealthy and powerful family. Fanfic writers may play with the idea of how these two from such different walks of life come to understand each other. Maybe Kurapika sees in Neon a glimmer of innocence that he wants to protect, or Neon could be intrigued by Kurapika's mystery and strength.
In science fiction, neon lights are used to distinguish different areas. They can mark out places like alien bazaars or areas of a spaceship. They add a visual element that makes the setting seem otherworldly. Think of how they make a place look both alluring and a bit dangerous at the same time.