In a 'naruto is cupid' fanfiction, perhaps Naruto gets a special mission from the Hokage to boost the morale of the village by increasing the number of couples. So he goes around observing people's interests and personalities. He notices Hinata's long - standing feelings for him but instead of reciprocating immediately, he decides to use her as an example of how to be a good partner. He starts to give advice to other villagers based on Hinata's kind and loyal nature.
One possible plot could be that Naruto, with his energetic and determined nature, decides to play Cupid in the Hidden Leaf Village. He might start by trying to set up his friends like Sakura and Sasuke. He could use his ninja skills to create 'coincidental' meetings between them. For example, he arranges for them to be in the same training area at the same time. Naruto, believing in true love, thinks he can make their relationship work.
He could pair up Shikamaru and Temari. They already have a bit of a connection and Naruto, seeing their potential, could nudge them further into a relationship. He might arrange for them to have more diplomatic meetings that turn into personal get - togethers.
It usually involves romantic tales set in the charming town of Cupid, Texas. Maybe there's a couple finding love against all odds or rediscovering it after years apart.
The main plot of Cupid manhwa centers around the lives of several characters as they encounter and deal with the power of love. There are unexpected twists and turns that keep the story engaging.
One idea could be Percy discovering new powers related to his heritage as Cupid's son. For example, he might have the ability to manipulate emotions on a grander scale, not just in terms of love. Another could be Percy getting involved in a conflict between the children of Cupid and other demigods who are suspicious of his newfound abilities.
A really interesting plot could be that Cupid, for some reason, decides to make Percy the ultimate symbol of love in the demigod world. Percy is then thrust into a role he doesn't understand, having to deal with love - sick demigods coming to him for advice. Meanwhile, he has his own relationship problems, like his feelings for Annabeth being complicated by this new status. He has to figure out how to handle Cupid's meddling and restore some normalcy to the love lives of those around him.
The main plot is that Psyche was a beautiful mortal woman. Venus was jealous of her beauty and sent Cupid to make her fall in love with a hideous monster. But Cupid accidentally pricked himself with his own arrow and fell in love with Psyche. He took Psyche to his palace but kept his identity secret. Psyche's sisters made her doubt her lover and she disobeyed Cupid's rules. As a result, she lost him. Then she had to go through many trials set by Venus to get him back. Eventually, she became immortal and was united with Cupid.
It's a romantic story involving two characters who are brought together by fate and cupid's intervention.
Cupid's powers could be portrayed as more limited in a fanfiction. For example, instead of his arrows working on everyone, they only work on certain types of demigods. Or his powers could be tied to specific emotions other than just love, like a sense of loyalty or friendship. This would change how he interacts with Percy and the other characters in the story.
The main plot is that Psyche was a beautiful mortal woman. Venus was jealous of her beauty and sent Cupid to make her fall in love with a hideous creature. But Cupid fell in love with her instead. He secretly visited her at night. Psyche's sisters made her doubt her lover. When she tried to see him in the light, she accidentally wounded him with a lamp. Cupid then left her. Psyche went on a long journey to find him and prove her love. Eventually, after many trials, she was reunited with Cupid and made immortal.
I'm not sure specifically as I haven't read it. But generally, it might be about some sort of love - related misfortune or complication caused by Cupid's actions or influence.