In the Demon Slayer manga, Inosuke survives. The story doesn't have his character meet a fatal end. He plays an important role throughout and remains alive at the conclusion.
One great Inosuke Demon Slayer crossover fanfiction is the one where he crosses over with characters from another popular anime like 'My Hero Academia'. It's really interesting to see how his wild and brash personality clashes with the more civilized UA students. He could be put in a situation where he has to work with them to defeat a common enemy that combines the quirks from 'My Hero Academia' and the demons from 'Demon Slayer'.
One of the most creative plots is a crossover where Inosuke enters a virtual reality game world. He doesn't understand the concept of the game at first and just starts attacking everything he sees as if it were a demon. As the story progresses, he has to learn the rules of the game world and team up with other players. It's a fun and unique take on his character as he adapts to this digital realm.
The anime of Demon Slayer sources its ideas from multiple key moments and plotlines throughout the manga. It carefully selects and adapts these elements to bring the story to life on screen. Some of the most notable scenes and character interactions are picked to showcase the essence of the manga.
The Demon Slayer anime mostly follows the manga closely. There are only a few instances where they might add a bit more detail or change the order of events slightly to make the story more engaging for the viewers.
The Demon Slayer anime is quite close to the manga, but there are a few differences here and there. Mainly in some added details and minor character developments.
Overall, the Demon Slayer anime follows the manga quite closely. However, for the sake of animation effects and storytelling, there are a few tweaks and added details. But these don't change the core plot.