One common plot is a human becoming friends with a member of Loona and going on adventures together. For example, they might explore a magical world that only the Loona member knows about. Another plot could be a love story where a human falls in love with a Loona member and they have to overcome differences, like the fact that one is from a different species or a famous idol while the other is an ordinary human. There are also plots where the human helps the Loona group solve a problem, like a mystery related to their music or a threat to their group.
A popular plot in Loona x Human fanfic is time - travel related. The human somehow travels back in time to when Loona was just starting out. They use their knowledge of the future to help Loona become more successful. In return, the Loona members are grateful and a strong relationship develops between them and the human. This can also lead to different twists like the human accidentally changing the future of Loona's career in unexpected ways.
Some Loona x Human fanfic plots involve the human being a big fan who suddenly gets the chance to be part of their world. Maybe they win a contest and get to be a backstage helper for Loona. As they interact more, a special bond forms. It could be a platonic bond where they just support each other through the challenges of the idol world. Or it could be a more romantic bond where the human and the Loona member find that they have a deep connection that goes beyond the typical fan - idol relationship.
Some loona fanfics focus on the relationships between the members. There are stories that show their deep friendships and how they support each other through tough times, like during a fictional concert tour where they face various challenges but come out stronger together.
Some plots may revolve around self - discovery. Rainbow Dash and Rainbow Blitz could be turned into humans and have to figure out who they are without their pony identities. They might learn about human emotions and relationships in a deeper way. There could also be a plot where they are training humans in the ways of the ponies, like teaching them about loyalty and friendship. Or they could be on a quest to find a magical item in the human world that has some connection to their pony world, facing many challenges and making new friends along the way.
You can start by looking on fanfiction websites such as Archive of Our Own (AO3). It has a large collection of fanfics, and you can use the search function to specifically look for Loona x Human stories. Another option is Wattpad, which also has a wide range of fan - created content. Just search for the relevant tags like 'Loona' and 'human' to find what you're looking for.
One popular theme is the discovery of the merman by the human. It often involves an element of surprise and wonder. For example, a human might be swimming in a secluded cove and suddenly come across a merman. Another theme is the relationship that develops between them, which can range from friendship to romance. The challenges they face due to their different species also makes for an interesting plot point, like how they communicate or deal with the differences in their living environments.
There are several types of 'human x succubus fanfic'. One type is the adventure - based ones. Imagine a human and a succubus teaming up to fight against a greater evil that threatens both their worlds. They start off as strangers, with the human being initially terrified of the succubus. But as they face challenges together, they learn to trust each other. Another type could be the more romantic ones, where the succubus, despite her nature, finds true love with the human. They have to overcome many obstacles, like the disapproval of other supernatural beings or the human's own insecurities about being with a succubus. And then there are the ones that explore the cultural differences between humans and succubi, with the relationship serving as a means to bridge those gaps.
One common plot could be them going on an adventure together in the mystical world they inhabit. Maybe they have to face a common enemy that threatens their realm. For example, a powerful youkai that is causing chaos. They might start off not trusting each other fully but as the story progresses, they learn to rely on one another's strengths.
One common plot could be Haruhi and Kyon going on an unexpected adventure within their strange club activities. Maybe they discover a new supernatural phenomenon that only they can solve together, strengthening their bond in the process.
One common plot is them going on adventures together outside of their usual angel - demon duties. For example, they might explore different parts of the world that are considered neutral ground. Another plot could be them dealing with the challenges of their relationship in a world where angels and demons aren't supposed to get along. And sometimes, there are fanfics where they work together to save the world in a more unconventional way than in the original story.
One possible plot could be the human adult getting lost in the Underground and Toriel finding and taking care of them. As they spend time together, they learn about each other's cultures and values. Another plot could be that the human adult has a special ability that Toriel needs to protect the Underground, so they team up. And a third plot could be that the human adult is on a quest to find a way out of the Underground, and Toriel reluctantly helps them, but along the way, they form a strong bond.
One common theme is friendship turning into something more. For example, they start as just fans or acquaintances and then develop deeper feelings. Another theme is the exploration of the idol - fan relationship in a more personal and emotional way.