Tsunade would probably be very suspicious at first. Naruto suddenly appearing from the future? It's not something that happens every day. She might think it's some kind of enemy's trick or a genjutsu.
Mystery is another theme. Their black color and often reclusive nature make them mysterious. In many stories, they live in hidden places like remote caves or deep in enchanted forests. Also, the idea of danger is prevalent. Their great power and sometimes malevolent nature pose a threat to the characters in the stories, whether they are humans, elves or other magical beings. And sometimes, there is a theme of redemption, like in the story where the cursed black dragon is saved and turns good.
In some black dragon stories, the black dragon is often seen as a symbol of mystery and power. For example, there might be a story where a black dragon is the protector of an ancient forest. It only allows those with pure hearts to enter the forest, and it uses its magic to keep the forest thriving and safe from harm. The black dragon might have the ability to control the elements within the forest, like making the trees grow taller or the streams flow more freely.
The OC would first need to adapt to the Senju's strong sense of family and clan loyalty. They would have to learn the clan's traditions, like their unique way of training. Maybe they would start by observing the other Senju members and then gradually participate. They would also have to get used to the Senju's natural - based ninjutsu, which might be very different from what they knew in their past life.
First, study the Senju clan's traits in the Naruto series. They are known for their strong life force and connection to nature. So, give your OC Senju a power or ability that reflects this, like the ability to sense the health of living things around them. Second, think about their personality. Maybe they are kind - hearted because of their clan's values, but also have a stubborn streak. Third, give them a backstory that ties them to the Senju clan, like being the descendant of a famous Senju warrior.
Some characters might be terrified. After all, dragons are extremely dangerous. For instance, a young and inexperienced wizard might freeze in fear at the sight of a dragon on the rise. However, more experienced characters like Harry Potter himself or some of the professors at Hogwarts would likely take immediate action. They might try to find out the cause of the dragon's rise and figure out a way to deal with it.
Sure. There are some out there. The idea of Naruto being related to the Senju clan opens up a whole new realm of possibilities in the Naruto fanfiction world. For example, it could change his relationships with other characters. If he was Senju, his connection to Sasuke, who is an Uchiha, would have even more depth considering the historical rivalry and connection between the Senju and Uchiha. And it might also give Naruto access to different jutsus and abilities that are unique to the Senju.
Share your own thoughts related to the topic. If she told a story about black history, you could mention what you know about that period or event. It creates a conversation. For example, 'I read about that too, and I think it's amazing how they overcame those difficulties.'
It could be a very strange or creative statement. Maybe in some fictional or mythological context, it implies that the taste of black dragons (if they were real) is something new and unexpected, like a unique flavor not found in normal animals. But of course, black dragons are not real creatures in our world.