A possible plot is that Hestia has a prophecy involving a demigod and a lemon. Percy is the demigod in question. Hestia reveals to Percy that the lemon is a key to unlocking a powerful weapon that can defeat an upcoming evil. They embark on a journey to find the lemon, facing various challenges along the way. During their travels, they develop a deep respect for each other. The lemon, when finally found, not only unlocks the weapon but also brings a new era of peace and cooperation between the gods and demigods.
In a Percy Jackson and Hestia lemon fanfiction, it could be that Hestia uses her powers related to the hearth to create a lemon - like glow around Percy. This glow gives him an extra boost of energy during a battle. They form an unlikely bond, with Hestia seeing Percy as a symbol of hope for the future of the demigod world. And the lemon aspect could be metaphorical, like a fresh start or a new hope that Percy brings, much like the refreshing feeling of a lemon.
One plot idea could be that Percy, while on a quest, stumbles upon a hidden grove dedicated to Hestia. There, he finds a lemon tree that has some sort of magical property. Maybe the lemons can heal the most severe wounds. And Hestia, in her role as the goddess of the hearth, has tasked Percy with protecting this tree from the forces of chaos that want to use its power for evil.
In Percy Jackson fanfiction, a relationship between Percy and Hestia could be really interesting. Hestia is the goddess of the hearth, representing home and warmth. A love story might involve Percy finding a new kind of peace and comfort in Hestia's presence. Maybe after all his adventures, he discovers a different kind of love with her, one that's more about stability and a sense of belonging.
The plot could involve Percy being injured or lost in some way, and finding solace at Hestia's hearth. They start to talk and find they have more in common than they thought. Hestia, seeing Percy's pure heart, decides to take a more active role in his life. Their relationship develops slowly, with Percy learning about Hestia's importance to the world. They then have to deal with the politics of the gods as they decide to marry, as some may oppose this unusual union.
One possible fanfiction could be about Percy Jackson seeking the guidance of Hestia, the goddess of the hearth, who has now become a champion in some way. Maybe she is a champion against a new threat to the demigod world. Percy could learn new skills or gain unique powers from her. For example, powers related to home and family, which could be used to protect Camp Half - Blood in a different way than before.
You can start by looking on popular fanfiction websites like Archive of Our Own (AO3). There are often tags related to 'Percy Jackson' and 'Hestia' which can help you narrow down the search. Another option is Fanfiction.net, though the tagging system might not be as detailed as AO3.
One plot idea could be that Percy, while on a quest, stumbles upon Hestia's hidden sanctuary. There, he begins to understand her in a new way and feelings start to develop. Another could be that Hestia, seeing Percy's selfless acts, becomes intrigued and starts to interact with him more, leading to a romantic connection.
One plot idea could be Percy seeking Hestia's guidance during a time of great turmoil in the demigod world. Hestia, being the goddess of the hearth, could offer him a sense of home and stability in a chaotic situation. Another idea is a story where Hestia tasks Percy with protecting an ancient relic related to the hearth that has the power to either save or destroy the camp. Or perhaps a fanfiction where Percy discovers a long - lost connection between his family and Hestia, which gives him new powers or a special mission.
A great plot could involve Percy trying to introduce modern concepts to Hestia's traditional hearth - keeping. This causes some friction among the other gods who see it as a disruption. Percy then has to prove that his ideas can actually strengthen the concept of the hearth. For example, he wants to use technology to spread the warmth and comfort of the hearth to more people. As for their relationship, Hestia is initially hesitant but then starts to see the potential in Percy's ideas.
One interesting plot could be Percy's new relationship with Hestia. Since Hestia is the goddess of the hearth, Percy might learn a different kind of warmth and family from her. Maybe she teaches him some ancient secrets related to the hearth that give him new powers or ways to defend himself. Also, how Percy interacts with other gods and demigods in this new situation would be exciting to explore. For example, some might be jealous of his special relationship with Hestia while others might try to use it for their own gains.