In this fanfiction, perhaps the Black Death returns in a form that is related to some dark jutsu gone wrong. It might start in a small village and then spread rapidly. The story could focus on Naruto and his friends trying to find a cure. They might have to travel to different places, meet new characters, and face many challenges along the way. For example, they could encounter groups who think the disease is a punishment from the gods and oppose their attempts to stop it.
The plot might involve the return of the Black Death as a result of some ancient seal being broken. This could release a plague - like entity that feeds on the life force of the ninjas. Naruto, being the hero, would feel responsible for saving everyone. He might have to use new and untested forms of his jutsu to combat the effects of the disease. His friends, like Sasuke and Sakura, would also play important roles. Sasuke could use his sharingan to detect early signs of the disease in people, while Sakura could use her medical skills to try and develop a treatment. The story would likely be filled with action, adventure, and a race against time to save the Naruto universe from this new threat.
It could be an unknown ninja who has been researching dark and forbidden arts. This ninja accidentally unleashes the Black Death - like plague while trying to gain ultimate power.
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.
One possible plot could be that Naruto has been on a long and secret mission. During this time, he met someone and had a child. Now he returns to the village with the child, and the villagers are both shocked and curious. His friends, like Sasuke, might be initially skeptical but then come to accept the new situation. The child could also have some unique powers inherited from Naruto, which could lead to various adventures as they try to figure out how to control and develop these powers.
In the 'naruto family returns fanfiction', it could be that Naruto's family returns to the village during a time of celebration, like a big festival. But they soon find out that there are some underlying issues in the village, such as political unrest or a new group of villains secretly operating. Naruto then decides to use his influence and his family's combined strength to solve these problems and bring peace back to the Hidden Leaf. He might also use this opportunity to teach his children about the importance of protecting their home and the values of the ninja way.
Another idea is that the girlfriend is actually someone with a mysterious past related to Naruto's own past, like she might be related to an old enemy or have some connection to the Nine - Tailed Fox. This would add a whole new layer of mystery and intrigue to the story. Naruto would have to deal with not only his feelings for her but also the secrets she might be hiding and how they could affect the safety of Konoha.
The plot could involve Naruto coming back to find that the political situation has changed. Temari, being from Suna, could be there to help Naruto navigate the new power dynamics. They might have to deal with other villages that are becoming more aggressive. Naruto's return with Temari could also signal a new era of cooperation between the Leaf and Suna, and they could be at the forefront of diplomatic efforts. Plus, there could be some personal moments between them, like Naruto finally realizing his feelings for Temari during their adventures together.
One possibility is that Naruto is summoned to Rias' world through some sort of magical ritual gone wrong. Once there, he forms an unlikely alliance with Rias. Naruto's chakra - based powers could be a great asset to Rias' team. They might start training together, with Naruto teaching the devils about chakra control and Rias showing Naruto some of the unique magic in her world.
Perhaps in this fanfiction, Naruto returns to Erza because there is a prophecy that only he can fulfill in her world. He might bring new hope to the people there. He could also learn some new fighting techniques from Erza and her comrades while sharing his own ninja knowledge. This would lead to an interesting exchange of cultures and fighting styles.
The fanfiction could focus on Naruto's married life in Konoha. Maybe his wife is a powerful ninja in her own right. Together, they could train the next generation of Konoha ninjas. Their relationship could be a source of inspiration for the young ninjas. Naruto's return with his wife could also bring new diplomatic relations to Konoha if his wife has connections to other villages.
Well, it could be about Naruto coming back with two special swords. Maybe he got them during his time away on some new adventure. He might use these swords to fight stronger enemies in the ninja world, like some new evil organization that has emerged while he was gone.