The plot could be that Naruto has a vision of a great threat coming from outer space. So, he decides to build a spaceship. He starts by learning about advanced technology, perhaps from some hidden ninja scrolls that contain knowledge from an ancient civilization. Along the way, he faces challenges like getting the right parts and dealing with those who oppose his idea, thinking it's too dangerous. His friends like Sasuke and Sakura might join him, each contributing their own skills.
Well, perhaps Izuku starts by gathering rare materials for the spaceship. He might use his intelligence and unique skills he has developed. Maybe he's inspired by some hero who has space - related abilities. He could face challenges like getting the right technology or dealing with people who don't believe in his project.
Well, perhaps Harry uses his magic in a creative way to gather materials for the spaceship. He might use spells to shape the metal and assemble the parts. Then he could enchant the ship with magical protections and propulsion systems that are a blend of magic and some sort of wizard - made technology.
His friends like Ochaco could help. She might use her zero - gravity ability to assist in handling heavy parts during the construction. Also, Iida could be there to keep things organized and on schedule with his strict sense of order.
One idea could be that Naruto mistakes the spaceship for a really strange summon. He tries to communicate with it using his ninja skills, like sending chakra signals, thinking it's some sort of new, unknown creature. This could lead to all sorts of comical misunderstandings as the spaceship's technology reacts in unexpected ways to his attempts.
Tsunade could play a crucial role. She could use her vast knowledge of resources and economics to secure the funds and materials needed for the fleet. Jiraiya, if he were still alive, would bring in his worldly knowledge and connections from his travels. He could help Naruto find rare and valuable materials from far - flung places for building a truly remarkable fleet.
Sasuke could be one to help. Given their history and Sasuke's intelligence, he might contribute some knowledge about energy manipulation which could be useful for the lightsaber's power source.
Sasuke would be a likely helper. Despite their past differences, they are comrades now and Sasuke has his own set of skills that could be useful in building a village, like his Sharingan - assisted precision in construction work.
In this fanfiction, Naruto might build a fleet to protect Konoha from a new and powerful sea - based threat. He could use his shadow clones to speed up the construction process. Maybe he'd recruit his friends with unique skills like Shikamaru for strategic planning and Choji for strength in lifting heavy materials.