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.
A theme that often shows up is the exploration of Naruto's past traumas. His cold return could be a result of some deeply scarring experiences. The fanfiction may then delve into these past events, how they shaped him, and whether he can overcome them. This can make for a very emotional and engaging read as readers get to see a more complex side of Naruto's character.
There's also 'The Cold - Hearted Naruto Returns'. In this story, Naruto's return is marked by his cold attitude towards his former friends. The author explores how his time away has changed him, and how the village now has to deal with this new, seemingly unfeeling Naruto. It makes for an interesting read as it challenges the traditional view of Naruto's warm - hearted nature.
He might feel really sad and isolated. Naruto has always loved Konoha, so a cold welcome would be a huge blow. He could end up leaving again, this time for good.
It could be that his new 'godlike' power has isolated him. People might be either in awe or afraid of him, and he may feel that he can't be close to others as before. So he acts coldly as a defense mechanism.
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.
Perhaps it could be someone from his own village that he never really noticed before. Like a girl who was always in the background but during his time away, she grew into a confident and beautiful woman. She could be someone who works in the hospital, and Naruto starts to see her in a new light when he comes back injured from a mission.
In this fanfiction, the plot might involve Kushina coming back to help Naruto in his toughest battles. Maybe she uses her unique chakra abilities that Naruto has inherited to give him an edge. She could also provide emotional support, as Naruto has always longed for his mother.
Another theme is growth. Both Naruto and Hinata may have grown separately during Naruto's absence. When he returns, they have to adjust to the new versions of each other. For instance, Hinata might have become stronger in her own way, and Naruto has to recognize that.