I'm not sure if there are a lot of such fanfics out there. But it could be an interesting concept. Maybe in this fanfic, Mifune, with his samurai skills and honor, imparts unique combat and life lessons to Black Star. It might show how Black Star grows under Mifune's guidance, both in terms of his fighting abilities and his understanding of the world around him.
One common theme is the clash of different power systems. Star has her magic from the 'Star vs the Forces of Evil' universe, and Goku Black has his Saiyan powers from Dragon Ball. Another theme could be the exploration of good and evil. Goku Black is a villain, so stories might focus on how Star and her friends deal with his malevolence. Also, the idea of interdimensional travel can be a theme, as Goku Black is from a different universe in Dragon Ball and would have to cross into Star's world.
Maka would also be a great character to interact with Mifune. As a strong - willed and intelligent student at the DWMA, she might be intrigued by Mifune's skills and his different approach to combat. She could try to learn from him, or even teach him some of the DWMA's ways in return.
I'm not entirely sure specifically what the 'black vs black 2 story' is. It could be a story about a conflict or competition between two black entities, like two black characters in a fictional work, two black - themed groups, or something similar.
Yes, there is a story in 'Star vs the Forces of Evil'. It follows the adventures of Star Butterfly, a magical princess from another dimension. She is sent to Earth to learn how to use her magic better. There, she meets Marco Diaz, and together they face various challenges, including battling the forces of evil that threaten both Earth and Star's home dimension. The story is filled with magic, friendship, and a lot of fun and exciting plot twists.
Well, I don't have a specific title off - hand. But a good place to start looking for 'Star vs the Forces of Evil Goku Black' fanfiction is Archive of Our Own. They have a wide range of fan - created works. You can filter by the relevant fandoms and look for stories that incorporate both elements in an interesting way, like maybe a story where Goku Black ends up in the dimension of 'Star vs the Forces of Evil' and causes chaos.
One unique aspect is that it often explores Mifune's backstory. Since he has a somewhat mysterious past in the original Naruto series, fanfiction can fill in those gaps.
The combination of Naruto's ninja world and Mifune's samurai elements makes it unique. Naruto's world is filled with chakra and jutsu, while Mifune represents the traditional samurai values like honor and discipline. When these two worlds collide in a fanfic, it creates a new and exciting dynamic. For instance, in some fanfics, Mifune's swordsmanship is pitted against Naruto's ninjutsu, creating intense battle scenes.
Yes, there are likely some out there. You can start by checking popular fanfiction websites like Archive of Our Own. Just search for'mifune x blackstar' on the site and you might find some interesting stories written by fans.