Perhaps Naruto returns to the world with new powers or abilities he gained during his time away. He might use these to solve long - standing problems in the ninja world, like better relations between different villages. He could also teach the new generation of ninjas what he has learned.
It could be a new villain who has risen to power during Naruto's absence. This villain might have a vendetta against Konoha or the ninja world in general because of something that happened while Naruto was away.
Perhaps Naruto returns to find his former world in chaos under the rule of a tyrant. Remembering the pain and suffering he endured there, he decides to take revenge by overthrowing the tyrant. He uses his ninja skills and his ability to inspire others to build a resistance.
There's a good chance he meets Kakashi first. Kakashi was his mentor and they have a strong bond. Kakashi might be out on a mission near the place where Naruto returns, or just be around the village doing his usual thing like reading his book at the training ground.
Well, Naruto might find that his old friends have changed a great deal. Maybe some of them have new powers or have faced different challenges in his absence. He could also discover new threats to the village that he needs to deal with right away.
Well, Naruto could face old enemies who thought he was gone for good. They might be shocked when he returns seeking revenge. For example, if Orochimaru was still causing trouble, Naruto would use his newfound knowledge and strength to take him on.
In some fanfictions, Naruto might return to Konoha to a cold reception because the villagers still hold grudges from his past. Maybe they haven't fully accepted his power or the chaos he sometimes brought. For example, they could be afraid of his Nine - Tails power flaring up again and causing destruction.
It could be that Naruto returns to a world that has changed a great deal in his absence. There could be new political situations in the ninja world. For example, new alliances might have been formed between different villages. Naruto, being Naruto, would probably try to bridge any gaps or misunderstandings. He might also discover new talents among the younger generation of ninjas. He could take on the role of a mentor, just like some of the people who guided him in the past. His return could also spark a new era of peace and cooperation in the ninja world as everyone looks up to him as a symbol of hope and strength.
Definitely Hinata. Her love for Naruto is well - known. Sakura, too, as she has grown closer to Naruto over the years. Ino might also be in the harem. She has had her own moments with Naruto and her skills as a ninja could be an asset. And perhaps Karui from the Cloud Village. After Naruto's peace - making efforts between the villages, she could have developed feelings for him.
He would most likely meet his father, Minato Namikaze, and his mother, Kushina Uzumaki. These are the two main family members he never really got to know growing up.