One idea could be Indra Otsutsuki crossing over into a modern-day world. He could struggle to adapt to the new technology and social norms while still having his powerful ninja abilities. Maybe he meets a group of people who initially fear him but then come to understand his situation and help him navigate this strange new world.
To create a believable character of Indra in a crossover, you need to stay true to his original traits. Remember his pride and his powerful ninja skills. So, if he crosses into a different world, he should still carry that sense of self - importance. For example, if he's in a world of magic, he might initially look down on the local mages until he realizes their powers are different but not necessarily inferior.
A fanfic could focus on Indra's training. We could write about the intense and arduous training he underwent to become such a powerful figure. It might involve secret techniques passed down in the Otsutsuki clan that only he was able to master due to his unique talent.
Another angle could be a fanfic where Indra Otsutsuki travels to a different dimension. He has to adapt to a completely new world with different rules and powers. It would be fascinating to see how his Otsutsuki abilities fare in this new environment and how he interacts with the local inhabitants.
One idea could be an otsutsuki crossover with the Naruto universe. Imagine an otsutsuki character interacting with Naruto and his friends, perhaps teaching them some of their unique jutsu or having a power struggle. Another idea is an otsutsuki crossover with a different anime like One Piece. The otsutsuki's otherworldly powers could create chaos in the Grand Line.
One common theme is power acquisition. Naruto or other characters often gain Otsutsuki - like powers and have to learn to control them. For example, they might inherit the ability to use unique dojutsu or have enhanced physical abilities.
Another great idea for an Indra crossover fanfiction is to cross him over with a post - apocalyptic world. In such a story, Indra's skills and abilities would be put to the test as he tries to survive and perhaps even bring some order to the chaos of the post - apocalyptic landscape.
First, do your research on the otsutsuki. Know their powers, their backstories, and their characteristics. Then, choose the other universe or franchise you want to cross them with. Next, think of a starting point for the story, like an otsutsuki arriving in a new world. Just start writing and let your ideas flow.
One unique element is the clash of power systems. For example, when Kaguya is crossed over into a different universe like the Harry Potter universe, her chakra - based powers are very different from magic, and seeing how they interact is fascinating.
First, decide which world or character you want to cross Indra with. It could be a well - known fictional universe like Star Wars or a lesser - known but interesting concept. Then, think about how Indra's backstory and abilities would fit into that new setting.