The scene of Sukuna's death in the manga is a climactic moment. It's filled with action and drama, as various powers and tactics are employed to bring him down. The build-up to this point is full of tension.
In the manga, Itachi's death occurs when he exhausts his strength and passes away while having a deep conversation with Sasuke, laying the foundation for significant plot developments.
Well, without knowing which specific novel you're referring to, it's hard to give a detailed analysis. Generally, a character's death scene can be a very impactful moment in a novel. It might be used to create a sense of tragedy, to further the plot by removing a key figure, or to evoke strong emotions in the reader. For example, if Han was a heroic character, his death could be a sacrifice that stirs up feelings of admiration and sadness at the same time.
Daredevil's death in the comic came about when he took on a seemingly impossible mission to save the city. Despite his best efforts and heroic actions, he couldn't overcome the odds and tragically perished.
In the death scene of Vincent in Pulp Fiction, it is a sudden and shocking moment. The misfortune that befalls him while he is in the bathroom shows the unexpected nature of the movie's events. It also adds to the overall chaotic and unpredictable atmosphere of the story.