One common theme is the clash of two different cultures. Naruto's world is all about ninjas, chakra, and village politics, while the Vocaloid world has music, digital entities, and a different kind of 'fan following'. When these two worlds collide in fanfics, it creates an interesting dynamic.
A lesser - known but really good one is 'Naruto's Vocaloid Adventure'. It starts with Naruto being intrigued by a strange sound, which turns out to be related to the Vocaloid world. As he delves deeper, he meets various Vocaloid characters and they embark on a journey together. It has a great balance of humor, action, and character development.
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.
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.
In 'naruto vocaloid fanfic', the potential for character interactions is huge. For example, Naruto's energetic and determined personality can interact in so many ways with the more otherworldly Vocaloid characters. It allows for a lot of creativity in how they communicate, form alliances or even have conflicts. Also, the fanfic writers can play with the idea of how Vocaloid's musical elements can be incorporated into the Naruto universe, like using music as a form of jutsu or a way to communicate across long distances. This kind of creative blend makes it really interesting.
Well, in some 'naruto x vocaloid fanfic', a common plot point is the sharing of abilities. For instance, Naruto might gain the ability to create Vocaloid - like melodies that can soothe or inspire his comrades, just like how Vocaloid characters can influence emotions with their songs.
There's a 'naruto vocaloid fanfic' called 'Vocaloid in the Hidden Leaf'. In this fanfic, Vocaloid characters find themselves in the Naruto universe and have to adapt to the ninja way. It has some really cool fight scenes and interactions between the two different sets of characters.
A great 'naruto x vocaloid fanfic' to check out is 'Naruto and the Vocaloid Invasion'. In this story, Vocaloid characters suddenly start appearing in the Hidden Leaf Village. Naruto and his friends have to figure out how to deal with this new situation while also trying to understand the strange powers and personalities of these Vocaloid intruders.
I'm not entirely sure specifically what a '666 vocaloid fanfic' is about without more context. It could potentially be a fan - created story related to Vocaloid characters that has some sort of unique or perhaps '666' - themed element, which might be related to something edgy, or just a random number used for identification in the title.
First, you need to have a clear idea of the characters and their personalities. Then, come up with an interesting plot that fits the Vocaloid world. Make sure the story is engaging and has a unique twist.