Naruto could find a book that tells the story of a great hero who was just like him, full of energy and a desire to protect. This could inspire him to new heights. He might also accidentally trigger a trap or a hidden mechanism in the library while exploring, leading to an adventure filled with challenges and puzzles to solve.
Well, Naruto might discover some long - lost jutsu in that ancient library. Maybe there are scrolls that hold the secrets to new and powerful ninja techniques that no one has used in ages.
Perhaps in this fanfiction, the secret library is guarded by some sort of magical or powerful entity. Naruto, being Naruto, would try to befriend it first. Once inside, he could find prophecies about the future of the ninja world written in the books. This knowledge might put him on a new path of preventing future disasters and bringing about a new era of peace in the ninja world.
Well, he could gain new powers. Maybe the sentient library has books that teach him long - lost jutsu or give him knowledge about the nature of chakra that no one else in the ninja world knows. For example, he might learn how to combine different elemental chakra in a completely new way.
Well, he might discover a whole new world of magic in that fanfiction. Maybe it contains spells that are not in the original books. He could get inspired to try out new things or it could even lead him to new adventures within the Hogwarts library, like finding a hidden section related to the ideas in the fanfiction.
Well, he might discover a hidden jutsu scroll in the library. It could be a long - lost technique that gives him an edge in battles.
Well, he might put on the suit and suddenly feel a new sense of confidence. Maybe he uses it to infiltrate an enemy hideout. He could pretend to be a rich merchant or something, and use his ninja skills along with this new disguise to gather intel.
The baby could turn out to have some sort of special chakra. Naruto, being curious and always wanting to help, tries to find out more about it. He might seek help from Kakashi or other experienced ninjas.
It's possible that the tomb contains the remains of a powerful shinobi from the past. Naruto could learn about their history and the secrets of their power. For example, if it was an Uzumaki ancestor, he might find out more about his own clan's abilities. This could lead to him unlocking new forms of his chakra or even new ways to use the Nine - Tails' power.
Well, he could use the armor to enhance his combat abilities. Maybe it has some special powers like increased speed or strength. He might also discover a connection between the armor and an ancient ninja clan, which could lead to new adventures and unlocking more of his potential.
In such a fanfiction, Naruto might take the child under his wing. He could start teaching the child some basic ninja skills, like how to throw a kunai properly. Maybe he'd also share his own experiences of growing up as an outcast in the village, inspiring the child to be strong.