One common theme is Vash's struggle with his past. His actions in the past and the consequences they've had on him are often explored. Another theme is his relationships, like his friendship with other characters or potential romantic relationships. His pacifist beliefs are also a big theme, and how he tries to uphold them in different situations.
One great Vash the Stampede crossover fanfiction is the one where he crosses over with the Cowboy Bebop universe. It's really interesting to see how Vash's pacifist nature clashes and also meshes with the more morally ambiguous characters in Cowboy Bebop. The author does a great job of maintaining Vash's character while exploring new storylines in the Bebop world.
You can try some popular fanfiction websites like Archive of Our Own (AO3). It has a large collection of fanfictions related to various works, including Vash the Stampede. Just search for 'Vash the Stampede' in the search bar, and you'll get a bunch of results.
One popular trope is the 'fish out of water' trope. When Vash crosses over into another universe, he often has to adapt to new rules and cultures, which makes for some really fun and comical situations. For example, if he crosses into a modern - day Earth setting, his old - fashioned ways and his gun - slinging skills seem out of place but also really cool.
The opening song was a novel written by Little Red Bean Sandbag. The story was about the protagonist, Su Chen, who had transmigrated to the world of the original god and obtained the "Sound of the Original God" system. He could link to the live music video of the single in the continent of Tivat. Su Chen created a single called " Double Happiness ", which caused a sensation and shock. This song had a suona part, which left a deep impression on people. However, some of the lyrics of the song did not match the customs and traditions of the real world, causing some doubts and confusion. Other than the novel, there were also some related chapters and reviews that could be read.
Overall, Trigun Stampede adheres closely to the manga. Some minor details might differ for the sake of the adaptation's flow and visual presentation, but the core remains the same.
The theme song might not be the opening song. Although the theme song usually referred to the opening song, sometimes the theme song could be other songs instead of the opening song. Therefore, the theme song and the opening song could be defined and used differently in a work.
Vash doesn't die. The manga's storyline keeps him alive through all the challenges and adventures. The creators chose to give him a different fate than death.
Definitely not. Vash is a figment of someone's creative mind. It has no roots in true events. The entire concept is built from scratch for the purpose of providing an enjoyable and imaginative experience for viewers and readers.