One common theme is friendship. Since Oliver is often the outsider in the Vocaloid world, many fanfictions focus on him making friends with the other Vocaloids. For example, stories might show how he overcomes his shyness and forms deep bonds with characters like Miku or Len.
A lesser - known but very well - written fanfiction is 'Oliver's Musical Encounter with the Vocaloids'. Here, Oliver gets involved in a grand musical competition among the Vocaloids. The author does an amazing job of describing the music and the emotions of the characters. It shows how Oliver's own musical style meshes with that of the other Vocaloids in a creative and engaging way.
Yes, there are some. You can check out websites like Archive of Our Own. There you might find various fanfictions about them. Some might focus on their friendship, while others could explore more creative scenarios.
One common theme is self - discovery. In these fanfictions, both Oliver and Len might go through a journey of understanding themselves better, and their relationship plays a role in that. Also, the theme of music creation is often present. Since they are Vocaloids, stories may revolve around creating new songs or performing together.
One common theme is the cultural exchange. Since Hetalia represents different countries and cultures, and Vocaloid has a diverse range of characters with different aesthetics, there can be a lot of cultural sharing. For instance, a Vocaloid character might introduce a modern Japanese music trend to a Hetalia character representing an older - fashioned European country.
One way their worlds could blend is through a shared mission. For example, Naruto could be on a quest in a world that has been invaded by some kind of digital threat. Vocaloid characters, with their unique abilities related to music and data, could team up with Naruto to fight this threat. The Vocaloid's music might have special powers in Naruto's world, like being able to soothe angry demons or boost the strength of the ninja. Naruto's ninja skills, on the other hand, would be useful for protecting the Vocaloid characters from physical attacks.
Another interesting concept is that a Vocaloid character becomes curious about Kagome's world and follows her through the well. In Kagome's world, the Vocaloid has to adapt to a new way of life without modern technology. Meanwhile, they both face a common enemy - a demon that is attracted to the Vocaloid's unique energy. They must learn to work together using their different skills to defeat it.
Sure. You can try searching on Archive of Our Own (AO3). There are often some well - written Hetalia - Vocaloid crossover fics there. Some might focus on the characters from Hetalia interacting in a Vocaloid - themed world, like the Hetalia characters attending a Vocaloid concert or collaborating on a song with Vocaloid characters in the story.
A plot could involve a villain who wants to steal the Vocaloid's voices to use as a weapon in the Naruto world. The voices could be used to control people or summon powerful creatures. Naruto and his friends would have to team up with the Vocaloid characters to stop this villain. They would need to figure out how to protect the voices and use the Vocaloid's musical powers against the villain.
First, do some research on both Kagome and the Vocaloid characters you want to include. Know their personalities, powers, and backstories. For example, Kagome is brave and has spiritual powers from Inuyasha. Then, come up with a basic plot idea like the ones mentioned before. Decide how the two universes will collide.