Percy's change can change the power dynamics in the story. If he's not as confident or as strong - willed as before, it could affect how the group makes decisions. In fanfiction, this can be used to explore different leadership styles or group dynamics. Maybe someone else has to step up and take on a leadership role that Percy used to fill, and this new situation can create all sorts of interesting plot twists.
It can also lead to new character development arcs for other characters. If Percy is different, those around him have to adapt. Annabeth might have to learn how to deal with this new Percy, which could be a whole new plotline in the fanfiction. Maybe she tries to bring back the old Percy, or she has to fall in love with this new version of him all over again.
If you want the clearest chapter reference, go to Chapter 53. Early on, Night had fallen over Chixia Village, eerily void of any human sounds.; later, the chapter leans on Jiang Li followed the village chief's wife down a narrow path leading to....
A practical answer is Chapter 23, because it turns the idea into a concrete scene. The chapter opens with Although Jiang Li exerted very little strength, Jiang Yan instantly felt..., adds pressure through So the moment the news broke that Jiang Li was entangling with Shang..., and ends on However.
A practical answer is Chapter 2, because it turns the idea into a concrete scene. The chapter opens with On the top floor of the Financial Building, a gathering of dark clouds..., adds pressure through In my opinion, Mother should kick out this troublemaker who's a stranger., and ends on Jiang.
Look to Chapter 13 for the clearest answer. It begins with Sensing that something was off with Jiang Yan, Jiang Yan dismissed the..., keeps building through What on earth do you mean?" Ignoring him once again, Jiang Li shifted her..., and lands on How could this happen..." Lin Manru didn't want to.
The best chapter pointer here is Chapter 35, "Stunning Beauty Shocks the Prosperous Age, Tops the Trending Searches!!!". It opens with Shining Transformation Trip's filming location was set on the distant... and closes on Brother is really hardworking, actually arriving at the same time as the....
The best chapter pointer here is Chapter 17, "Madam, the eldest young master has disappeared again". It opens with Jiang Li glanced at Jiang Shixu, who was tense and anxious behind her, and... and closes on I've been a mother for more than ten years but never tasted anything made....
A practical answer is Chapter 56, because it turns the idea into a concrete scene. The chapter opens with Lei Shen originally had no idea about the trending topics on Weibo., adds pressure through So, bring it on, Blackie, starting today, I am Jiang Li's diehard fan!, and ends on At this moment.
A practical answer is Chapter 52, because it turns the idea into a concrete scene. The chapter opens with The village chief and the woman behind him exchanged a glance, "This..., adds pressure through A grown man, dressed so flamboyantly, looks utterly terrible, couldn't..., and ends on And at.
Chapter 52 is the strongest chapter-level answer because it starts from The village chief and the woman behind him exchanged a glance, "This... and follows through on And at this point, they might as well try a desperate remedy for a....
The best chapter pointer here is Chapter 34, "Official Recording!". It opens with Seeing that the public sentiment wasn't quite right, Su Yinwan felt... and closes on Now that Lili is misunderstood, they start to kick us while we're down."....