Perhaps the fanfiction could be about Percy discovering that he is Kronos' brother early on. This revelation could send shockwaves through the demigod community. Percy would then have to prove that he is not like Kronos and is committed to the side of the gods. He could go on a journey to find out more about his family history and in the process, face many challenges from both the Titans and the gods who are suspicious of him.
Well, one possible plot could be Percy having to hide his relation to Kronos while still fighting against the Titans. He might struggle with the internal conflict of having a connection to such an evil entity as Kronos while trying to protect his friends at Camp Half - Blood.
In a 'Percy Jackson Brother of Kronos' fanfiction, the plot could revolve around Percy being an outcast because of his relation to Kronos. His friends at Camp Half - Blood might be initially distrustful. Percy then has to find a way to use his unique connection to Kronos to his advantage. Maybe he discovers a way to use Kronos' power against the Titans without succumbing to the evil within. He could also try to redeem Kronos in some way, which would be a huge and dangerous task as Kronos is one of the most feared Titans.
One possible plot could be that Percy discovers his true relation to Kronos early on. This revelation could cause a great deal of inner turmoil as he has to come to terms with being related to the main villain. He might then struggle with whether to side with his friends or his new - found brother, creating a complex moral dilemma.
The plot could start with Percy being somehow influenced by Kronos, maybe through a dream or a cursed object. Then he slowly starts to act in ways that are out of character for him. He might begin to gather followers who are also attracted to the power that Kronos represents. Eventually, he could lead an uprising against the gods, believing that he can create a new world order under Kronos's ideology.
The plot could involve her on a quest. Maybe she's searching for a way to break the cycle of Kronos' evil. She might team up with Percy Jackson and other characters. They could face various monsters and challenges along the way. And she could be constantly battling her own inner demons related to her father's nature, like a tendency towards power - hunger that she has to overcome.
One possible plot could be Percy's discovery of his true parentage as the son of Kronos and Rhea. This could lead to a huge power struggle within the demigod world. Other gods and demigods might fear his potential power and try to either eliminate him or recruit him to their side.
A plot could be that Kronos was once a good god but was corrupted by an ancient evil force. Through a series of events in the fanfiction, Percy and his gang find a way to cleanse Kronos of this corruption. Kronos then, in his redeemed state, helps them fight against the remaining threats to the world of demigods. He could use his knowledge of the old times and his powers to aid in battles and also offer wisdom to the young heroes.
The plot could involve Percy being ostracized by the other demigods due to his relation to Kronos. However, he discovers a prophecy that only he, as the son of Kronos, can fulfill. This prophecy might be about saving the world from a new threat that is related to the Titans in some way. He then has to go on a quest to gather ancient artifacts or gain the trust of certain beings to be able to carry out the prophecy.
One way for Kronos to win in Percy Jackson fanfiction is by spreading more chaos and discord. If he could make the demigods lose faith in the gods and each other, his job would be much easier. He could also try to find a way to use the prophecies to his advantage. Maybe he could twist the words of the prophecies to make the demigods make wrong decisions. And if he could somehow break the connection between the demigods and their godly parents, the demigods would be weaker and he could overpower them.
Perhaps a plot twist could involve Kronos' essence trying to take over Percy's body. Percy would have to fight against this internal takeover, and in the process, he discovers a way to use Kronos' power for good. This would completely change the dynamics of the Percy Jackson universe as we know it, with Percy becoming a sort of anti - hero figure who uses the power of the enemy to protect his friends and the world.
One possible plot twist could be that Percy has hidden powers related to Kronos. Since Kronos is a powerful Titan, Percy might have some latent abilities that are similar but not as malevolent. For example, he could have a unique control over time on a small scale, like being able to slow down time briefly in a battle to gain an advantage. Another plot twist could be that the gods initially mistake Percy for being as evil as Kronos due to their relation. This would lead to Percy having to prove his loyalty to the gods and his friends all over again. He would face a lot of distrust and have to overcome many challenges to show that he is not like his 'twin' in nature.
Well, it could be about Percy discovering he has this unexpected connection to Ares. And then he has to deal with the reactions of his friends like Annabeth. Some of them might be distrustful of this new relation. Percy would then try to find out more about his connection to Ares through exploring old prophecies and ancient sites, all while trying to keep his regular demigod duties in check.