A possible plot could be that the Rowaelin daughter and Feysand son meet by chance at a magical gathering. At first, they don't get along because of their different upbringings. But as they are forced to work together on a quest to save their respective realms from a common threat, they start to understand and fall in love with each other.
In a more complex plot, the Rowaelin daughter could be from a world where magic is fading, and the Feysand son from a world where magic is out of control. They are brought together by a mysterious mage who believes that their combined powers can restore balance to both worlds. Along the way, they discover secrets about their families and their own abilities. Their relationship grows as they face challenges, including political intrigue in their respective homelands and the jealousy of others who want their power.
Maybe the plot could revolve around a prophecy. A prophecy states that only the union of the Rowaelin daughter and Feysand son can bring peace to a war - torn land. However, there are forces that oppose this union. So they have to fight against those who want to keep them apart while also dealing with their own feelings for each other. The story could be filled with action, adventure, and romance as they struggle to fulfill the prophecy.
You can start by looking on fanfiction websites like Archive of Our Own (AO3). There are often tags related to specific characters and pairings, so you can search for 'Rowaelin daughter' and 'Feysand son' tags. Another option is to check out Tumblr. There are many fanfiction communities on Tumblr where people might share or recommend such fics.
Well, it could be about a character from My Hero Academia (MHA) teaming up with the daughter of Poseidon. Maybe they face some common enemies that require both the quirks from MHA world and the powers of the daughter of Poseidon. For example, they might have to fight against some sort of sea - based villains who are causing chaos in both the human world and the world of the gods.
The plot could involve them being brought together by some sort of magical force. Maybe a powerful artifact needs to be protected, and they are the only ones who can do it because of their unique bloodlines. As they spend time together, they start to fall in love. However, they face a lot of opposition from both sides. The friends of Inuyasha's son think he's betraying his father's memory, and Naraku's old minions might try to use the daughter for their own evil plans.
One possible plot could be that Flik, being the inventive and curious ant he is, discovers a new part of the anthill that has been long forgotten. There, he stumbles upon Atta's daughter who is also exploring. They start sharing their dreams and ideas. Flik tells her about his latest inventions and she shares her thoughts on how to make the anthill a better place. As they spend more time together, they form a strong friendship that eventually helps the whole ant colony as they bring in new ideas and ways of doing things.
The plot could also involve her having unique nen abilities different from Hisoka's. She might be on a journey to understand these powers and in the process, cross paths with the main characters from Hunter x Hunter. Perhaps she forms an unlikely alliance with Gon and Killua, who initially are wary of her because of her relation to Hisoka, but later come to respect her for her own qualities.
It could be about Sharna Burgess teaching her teen daughter how to dance. Maybe the daughter is initially shy but Sharna encourages her, and they end up bonding over their shared love for dance and perform together at a local event.
She could be kidnapped by a villain who wants to use her as leverage against Tony Stark and the Avengers. So the Avengers have to work together to rescue her. During the rescue mission, they discover some new abilities she has that she didn't even know about herself.
One common theme is power dynamics. Given that all three characters have significant powers in their original lore, exploring how those powers interact and balance in the fanfic is quite common.
Well, it could be a story where Red Leader, being a powerful and mysterious figure, meets the Queen's daughter in some sort of political or diplomatic event. Maybe he initially sees her as a means to gain an advantage in the power struggle against the Queen's realm. But as they interact more, he starts to develop real feelings for her.
One possible plot could be that Harry's daughter Lemon discovers she has a unique magical ability that Harry has to help her control. Maybe she can communicate with magical creatures in a way no one else can, and they go on adventures together to learn more about this gift.