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.
The popularity also stems from the fans' love for the Tokyo Revengers world in general. Since Takemichi and Mikey are central characters, fans are eager to explore their relationship further. Fanfiction allows them to do that, whether it's imagining different timelines, different interactions, or just exploring their emotional connection on a deeper level.
Yes, there might be. The Naruto and Attack on Titan fandoms are both huge, and fans often like to cross over their favorite characters in fanfiction. So it's quite possible to find Eren - from Attack on Titan - in Naruto fanfiction. However, it may not be as common as fanfictions within each respective universe.
A third storyline could be a sports - related one. They all join a basketball team. Takemichi is the underdog trying to prove himself, Mikey has natural talent but is a bit of a wild card, and Draken is the reliable team captain. They face off against tough opponents, and there are internal team conflicts as well. But in the end, they learn to work together and become a great team.
Often, in these fanfictions, Eren develops more empathy. He starts to really understand Mikasa's feelings. For example, he might realize how much his actions impact her and become more cautious. He becomes more of a protector instead of just a fighter.