If the grandfather is very warm and accepting, Shikaneji would feel relieved and happy. They might open up more about their relationship and their dreams. Nejire could start chatting excitedly about their future together, and Shinsou would relax and join in the conversation more. However, if the grandfather is not so friendly, they would be disappointed and perhaps a bit defensive.
For the older generation like the Third Hokage, watching an AU fanfiction might make them regret some of their decisions in the original story. If they see an AU where they handled things differently and it led to better outcomes for the village and its people, they might feel a sense of remorse. This could then affect how they interact with the younger generation. They might be more open to new ideas and less set in their ways, which in turn could improve their relationships with the likes of Naruto and his friends.
One great 'Female Naruto Shikamaru AU' fanfiction is 'The New Path'. In this story, the female Naruto has a completely different dynamic with Shikamaru. It explores how their relationship might develop in an alternate universe where Naruto is female. The characterizations are really well - done, staying true to the original personalities while also adding new twists due to the gender change.
He could meet an AU version of Hinata who is more assertive and outgoing. Maybe she's a powerful ninja in her own right and not as shy as in the original story.
Naruto's reaction could be a mix of sadness and resolve. He has a big heart, so the betrayal would cut deep. But he also has the will of fire within him. He could use this as fuel to rise above the situation. He might seek out new allies in the High School DxD world, like Issei and his friends (if they weren't part of the betrayal). Together, they could work towards uncovering the truth behind the betrayal and taking on any threats that might be related to it.
He'd probably be shocked at first but then jump into action. Naruto is used to facing tough situations. He'd likely start fighting off zombies right away, using his physical strength and ninja techniques.
One possibility is that Naruto enters an AU where chakra doesn't exist. Instead, there are other forms of power. He would have to learn how to use this new power from scratch. Also, the relationships between different ninja clans could be very different. Naruto might end up making new alliances and enemies based on this new dynamic. This could be a great opportunity for character development as he faces challenges that are completely different from what he's used to in his original world.
Naruto could be a tech geek in a modern AU, working on the latest software developments. Hinata might be a fashion designer. They could meet at a tech - fashion event where Naruto is presenting some new wearable tech and Hinata is looking for inspiration for her new collection. Their relationship would be a blend of two different worlds, with Naruto being amazed by Hinata's creativity in fashion and Hinata being interested in Naruto's technological prowess.
I really like 'Percy Jackson: High School Years'. In this fanfiction, the author does a wonderful job of integrating the mythology from the original series into the high - school environment. For example, the monsters become the bullies in the school, and the quests are like school projects with a life - or - death twist. It's a fresh take on the Percy Jackson world.