Obviously, Kushina is one of the main characters. Naruto is also a central figure as her son. Since it's related to the Naruto universe, characters like Sasuke, Sakura, Kakashi might also be important in the fanfiction. They could interact with Kushina in various ways, like Sasuke might be skeptical of her at first, or Sakura could be eager to learn from her.
Sasuke might be affected as Naruto's closest friend. With Kushina back, Naruto could be more at peace, which might change the dynamic of their relationship. Sasuke could see a different side of Naruto, one that is more complete with his mother's presence.
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.
Jiraiya could also be one of the main characters. He was Naruto's mentor and had a connection with Kushina's family. He could play a role in helping them adjust to the time travel and also use their knowledge to his advantage in some ways, like getting intel on future threats.
Kushina is a central character as the whole concept is about her remembering things related to Naruto. Naruto, being the subject of her memories, is also a main character. There might also be other characters like Minato, Naruto's father. Since Kushina was married to Minato, he could be part of her memories too. Also, Naruto's friends like Sasuke and Sakura could potentially be in the fanfiction as they are important people in Naruto's life and thus might be part of Kushina's recollections.
Obviously, Naruto and Kushina would be the main characters since it's about Naruto being Kushina's brother. But there could also be other important characters. Minato might be a significant character as he was Kushina's husband. Also, characters like Jiraiya could be involved, as he was Naruto's teacher and had a connection to Minato. And then there are Naruto's friends like Sasuke and Sakura, who could interact with Naruto in this new family - centered scenario.
She could also be amused in some cases. If the fanfiction has some really out - there but harmless ideas about Naruto, like him having a strange hobby that doesn't really change his fundamental good nature, Kushina might find it funny and just shake her head at the creativity of the fanfiction writer.
One possible plotline could be Kushina's reunion with Naruto and how she uses her skills and wisdom to help him in his battles. For example, she might teach him some new jutsu that only she knew. Another plotline could involve Kushina exploring the new ninja world that has changed so much since her time. She could interact with characters like Sasuke and Sakura, and have an impact on their development as well.
Obviously, Naruto and Erza are the main characters. Naruto is a ninja from the Hidden Leaf Village with his unique abilities. Erza is a strong female character from her own world, known for her combat skills and leadership.
Obviously, Naruto and Sakura are the main characters. Naruto is the one who has been away and is now coming back. Sakura, being his friend and potentially more in the context of this fanfiction, is waiting for him in the village. Their relationship is a central focus, and other characters from the Naruto universe might also play supporting roles depending on the specific story.
Obviously, Naruto and Temari are the main characters. Naruto, the hero of the Hidden Leaf Village, known for his determination and powerful ninja skills. And Temari, a strong - willed kunoichi from the Hidden Sand Village, with her own set of impressive abilities.