You can expect all sorts of wild and imaginative adventures. Maybe time travel to Naruto's world or Naruto characters encountering Doctor Who's aliens.
The adventures could be anything from Doctor Who helping Naruto save his village from a time-bending threat to Naruto joining the Doctor on a journey through space and time, encountering strange new worlds and foes.
He might encounter unique and dangerous beasts in Uzushiogakure. Fanfiction often has new and exciting creatures for the protagonist to face, and Uzushiogakure's different environment could be home to such beasts.
She could meet a time - traveler. This would open up a whole new set of adventures as they journey through different eras together, trying to fix historical events that have been altered by villains. It would be a great opportunity to explore different time periods and how Supervirl's powers interact with the rules of time.
Perhaps they embark on an adventure to stop a time - traveling villain who is trying to change the course of Vongola history. Tsuna and Giotto would have to travel through different time periods themselves to track down this villain. This would expose Tsuna to different eras of the Vongola's existence and give Giotto a glimpse into the future of the family he founded. They would face many challenges, but their combined strength and determination would see them through.
Well, in such a crossover, we could see the Doctor using their wits and technology to navigate the blocky Minecraft universe. There could be interdimensional portals, strange creatures from both franchises, and epic quests to save the multiverse.
Well, he could encounter new allies and enemies in different villages and face all kinds of challenges on his own journey.
They might encounter new ninja techniques. Since Suna is known for its unique sand-based jutsu, Naruto could learn a thing or two. Sasuke, on the other hand, might be interested in the secrets of Suna's powerful shinobi. They could also meet new friends or face unexpected enemies.
Perhaps they are leaving together to search for a cure for some new and dangerous disease that has started to affect ninjas. They believe that by traveling the world, they will find rare herbs or meet wise sages who can help them develop a remedy. Naruto's determination and Hinata's knowledge of medicinal plants could be a great combination for this noble quest.
One adventure could be related to the local werewolf pack. Teddy might have to prove himself to them. Hermione could be the one to mediate any conflicts that arise. They could also go on a journey to find a lost spell book that is said to be hidden in La Push. Along the way, they'd face challenges like rough terrains and other supernatural beings that don't want them to find the book.
It could involve Sakura having to take care of the cat-turned Akatsuki members and dealing with their unique personalities and powers.
One possible adventure could be that the human gets involved in the War of the Ring. Maybe they join the Fellowship by accident, not fully understanding the significance at first. They could use their unique skills from the modern world, like basic first - aid knowledge, which might come in handy during battles or on the long journey.