One potential storyline could be Archaon arriving in the 40k universe through some sort of warp rift. He then starts to gather chaos followers from the various chaos cults. He could set his sights on a major Imperial world, like Terra, aiming to corrupt it from within. His dark powers could be used to turn the population against the Imperium.
A possible story for Archaon in 40k fanfic is that he becomes a sort of unifying figure for the chaos forces. He unites different chaos legions and cults under his banner. He then wages a large - scale war against the Imperium and its allies. Along the way, he might face challenges from within the chaos ranks, as different factions jockey for power. But his charisma and power would keep most in line as he tries to reshape the 40k galaxy in the image of chaos.
In a 40k fanfic featuring Archaon, one has to consider how he'd interact with the various factions. The Imperium would surely view him as a major threat. The Adeptus Astartes might be sent to stop him. Archaon, on the other hand, would likely see the Imperium as a prime target for his chaos - fueled ambitions. He could also potentially have run - ins with the Eldar, who are no strangers to chaos. His story in the 40k fanfic could be a long and violent one, full of battles and power struggles.
There could be a storyline where Naruto, as the God of Destruction, discovers a new threat to the entire Naruto universe that only his new powers can stop. But the cost of using his powers is high, and he has to make difficult decisions. For example, he might have to sacrifice a part of his old self or relationships to save the world. Also, his past enemies could be resurrected in a new form, and Naruto has to face them with his changed powers and identity.
One potential storyline could be Naruto training Boruto to unlock a new form. This new form could be a combination of Boruto's unique abilities and Naruto's power. Another storyline might be Naruto teaching Boruto how to deal with the pressure of being his son and living up to the Uzumaki name.
One possible storyline in an Oc Baratheon Daenerys Fanfic could be centered around a power struggle. The Oc Baratheon, with their family's claim to the Iron Throne, might initially oppose Daenerys. However, as the story progresses, they could see the benefits of joining her cause. Maybe they realize that together they are stronger against a common enemy, such as the Night King or another powerful faction in the Seven Kingdoms.
One potential storyline could be Sakura struggling to live up to Tsunade's expectations. Tsunade is a legend, and Sakura might feel pressured. Another could be Sakura getting involved in Tsunade's past - related mysteries. Maybe there are some secrets about Tsunade's early days that Sakura helps uncover. And of course, there could be a storyline about Sakura using the knowledge she gets from Tsunade to protect the village in a big way.
One potential impact is the negative effect on the image of K - pop idols. Such fanfics may spread false and harmful narratives about them. Another is that it can make fans uncomfortable, as they love and respect the idols, and seeing them in 'abused' scenarios in fanfics is not pleasant. Also, it might influence the overall perception of K - pop culture in a bad way among the general public.
One storyline could be that Sakura tries to reform the Akatsuki from the inside. She might use her knowledge of Konoha's values and her own strong will to change the way the group operates.
In Fate fanfic, Cu Chulainn can be the wildcard. His unpredictable nature, especially in his berserker form, can introduce an element of chaos into the story. He might break the rules or go against the established order to achieve his goals. Diarmuid, in contrast, is more likely to uphold the rules. His role could be to keep Cu Chulainn in check or to find a middle ground between following the rules and achieving victory. Their combined presence in a storyline can create a dynamic where there is a constant push and pull between chaos and order, brute force and diplomacy.
In many Dragon Age Origins fanfic storylines, Shale serves as a powerful ally. Its strength is a great asset to the main characters. For instance, in battle - related fanfics, Shale can turn the tide of a fight with its brute force.
Iden Versio often plays a crucial role in Star Wars fanfic storylines. She can be a catalyst for change within the Empire - related plots. For instance, she might start a movement within the Imperial ranks to reform certain practices. Her actions can also have a ripple effect on other characters, causing them to reevaluate their own loyalties.