Some characters might become more protective of Takemichi if the fanfiction shows him in a difficult situation. They would feel a stronger bond towards him, wanting to ensure his safety. However, if the fanfiction distorts Takemichi's character too much, it could cause some confusion and even a bit of a rift. They might start to question if they really know Takemichi as well as they thought.
In bonten x takemichi fanfiction, the story could revolve around Takemichi trying to reform Bonten. He has a history of going back in time to change things, so it would be interesting to see him use his unique ability within the context of dealing with Bonten. It could also be about a relationship, not necessarily romantic, but one where Takemichi becomes a sort of moral compass for the group, and they in turn protect him from other threats in their dangerous underworld.
In Takemichi x Mikey fanfiction, a common theme could be their growth together. Takemichi's time - leaping ability can create really interesting storylines in relation to Mikey. For example, Takemichi might use his power to save Mikey from a dark future, and in the process, their relationship evolves. It's also possible that the fanfiction shows their shared dreams and how they strive to achieve them side by side.
No, he doesn't. The Tokyo Revengers manga doesn't have Takemichi's death. Instead, he plays a crucial role in the unfolding events and continues to be an important part of the story.
A common theme is redemption. Takemichi often tries to bring out the good in people, and with Bonten, it could be about redeeming the members from their criminal ways. Another theme is friendship. Even in a world of crime, the fanfiction might show how Takemichi forms bonds with the Bonten members.
Dazai is not based on a true story. Usually, characters like Dazai are formed through the author's imagination and artistic expression to create an engaging narrative for the readers.