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.
Well, Mikey might be a bit surprised at first. He would probably be intrigued by the different scenarios the fanfiction presents about Takemichi. Draken, on the other hand, might be more critical and analyze how the fanfiction portrays Takemichi's growth and relationships. Mitsuya could find it interesting from an artistic point of view, seeing how the writer has used Takemichi's character to create new stories.
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.
Most BSD light novels often have complex characters. Since they are based on literary figures, they bring in the depth and complexity of those original personas. For example, a character might have the same traits as a famous writer but with a unique twist for the BSD universe.