A fanfic about Percy, brother of Zeus, could start with Percy feeling a sense of isolation. Despite being part of the divine family, he doesn't quite fit in. He decides to leave Olympus for a while and explore the mortal world. There, he experiences the joys and sorrows of humanity in a way that Zeus never has. He falls in love with a mortal, which causes a huge rift between him and Zeus. This love story could be the central theme of the fanfic, with Percy having to choose between his family and his new - found love.
The plot might involve Percy's discovery of a hidden power within him. As the brother of Zeus, he has always been in his brother's shadow. But when he uncovers this new power, it changes everything. He has to learn how to control it, and in the process, he may attract the envy or fear of other gods. This could lead to a power struggle within the divine realm.
The character of Percy's younger brother in Zeus fanfiction could bring new dynamics. He could be a source of conflict, perhaps being jealous of Percy's achievements and trying to outdo him in the world of the fanfiction. Or he could be a support, working alongside Percy against common enemies. It all depends on how the author wants to develop the character.
One possible plot could be Percy, as the brother of Zeus, having to deal with the politics of Olympus. He might struggle to find his place among the other gods while also trying to use his powers for good. Maybe he teams up with some of the younger demigods to bring about change in the rather old - fashioned ways of the Olympian council.
I'm not sure if there is an exact 'Naruto brother of Zeus' fanfic. There are countless fanfictions out there, and while the idea of combining Naruto and a figure from Greek mythology like Zeus in a fan - created story is very creative, it might be a rather unique and not so common combination. You could try searching on major fanfic platforms like FanFiction.net or Archive of Our Own.
In some fanfics, Zeus might be possessive of Percy because Percy represents a powerful force or potential. Zeus, being the king of the gods, wants to control all sources of power. Percy's abilities and his role in the demigod world could make Zeus see him as something to be owned or at least controlled.
The story of Percy and Zeus' friendship could begin with Percy being summoned to Olympus. Zeus has been observing Percy for a while and is intrigued by his abilities. At first, there is tension between them. But as they are forced to work together on a mission to retrieve a lost and powerful artifact, they start to see each other in a new light. Percy shows Zeus his loyalty and Zeus offers Percy protection. This newfound friendship gradually changes the dynamic between demigods and gods, leading to a more harmonious co - existence.
Well, one possible plot could be Percy discovering he's Zeus' brother in a very unexpected way. Maybe through some ancient prophecy that was long forgotten. He'd then have to deal with the power struggles within the Olympian family, as well as his own identity crisis. Another aspect could be his relationships with other demigods changing, as being related to Zeus is a huge deal.
The main antagonists could be some of the more traditional and power - hungry gods. For example, Hera might see Percy as a threat to the order she has maintained for so long. She could try to undermine him at every turn, fearing that his new ideas and his relation to Zeus will disrupt her plans. Another antagonist could be Ares, who might be jealous of Percy's potential power and influence over the other gods and demigods.
Fanfiction often takes creative liberties. In this case, it might be that the author wanted to explore new power dynamics and character interactions. If Percy was Zeus' brother, it would completely change the power balance in the world of the series. Percy's connection to the sea and Zeus' control over the sky could lead to all sorts of interesting plotlines, like joint quests or power struggles between the two 'brothers'.