The 'fade away novel' could be a genre or a specific work. If it's a genre, it might deal with themes of loss, decline, or impermanence. The story could involve the fading away of a hero's powers, or the slow disappearance of a magical realm. If it's a specific novel, without more context, it's hard to say exactly what it's about, but it's likely to center on some form of 'fading away' whether it's physical, emotional, or spiritual.
I'm not sure of a specific 'fade away novel' off the top of my head. However, some novels that have elements of fading away could be 'The Great Gatsby'. In it, the dreams and illusions of the characters fade away as the story progresses. Another could be 'The Catcher in the Rye' where Holden's innocence and his view of the world seem to fade as he experiences more of life.
One idea could be exploring Percy's internal struggle as he fades away. Maybe he's dealing with a curse or some sort of magical exhaustion that's causing this fade. He could be trying to tie up loose ends with his friends and family, having deep and emotional conversations.
First, think about the reason for Percy's fade away. Is it something supernatural? Or is it related to a personal sacrifice? Once you have that, start with a scene that sets the mood. For example, if it's a supernatural cause, you could start with Percy noticing strange things around him like objects disappearing or his reflection fading. Then introduce the other characters' reactions to his situation.
Rebirth from a dead end was synonymous with rebirth from despair, rebirth from despair, rebirth from death, rebirth from nirvana, rebirth from cocoon, and rebirth from nirvana.
Splendid was similar to resplendent, gorgeous, magnificent, wonderful, brilliant, glorious, gorgeous, bright, beautiful, rich, gorgeous, gorgeous, brilliant, and so on.