At first, Sans would probably be a bit shocked, but then he'd turn on his laid - back, sarcastic attitude. He might make jokes at Gaster's expense, which could either annoy Gaster or make him respect Sans more. If Gaster tries to harm him, Sans could use his shortcuts to dodge attacks and try to find a way to reverse the situation. He'd also likely be thinking about how this affects his friends in the Underground, especially Papyrus, and try to find a way back to them.
Often, they interact with a lot of patience. They sense the reader's pain and are gentle. For example, they might start by just being a quiet presence around the reader. They slowly build trust, like in a story where a Sans from an AU offers the reader a small gift as a sign of friendship without pushing too hard.
Papyrus might be initially shocked. He's used to Sans being more laid - back, so seeing him in a fight could be quite a surprise. His eyes would widen and he might gasp.
Alphys would likely be very confused at first. She's used to her own types of fan - related interests, and this would be something new and strange. She might think it was some sort of strange new trend in the Undertale fandom that she didn't know about. As she thought more about it, she could become more accepting, especially if she realized it was just a creative expression of the fans. But it would definitely take her some time to get used to the idea.
The ninja world would be in shock. The Hidden Villages would be very cautious around Naruto. They might see him as an even greater threat or an unknown entity. His friends, like Sakura and Sasuke, would have to adjust to this new Naruto and learn how to fight alongside him with his new powers.
First, don't be intimidated by the vastness of the Aus Sanses fanfiction world. Begin with the simpler, more well - received ones. Look for fanfics that have good reviews or high ratings. Another tip is to follow your interests. If you like action - packed stories, search for Aus Sanses fanfiction that focuses on battles or quests. If you're more into character - driven plots, look for ones that explore Sans' emotions and relationships in the different AUs. And always keep an open mind as you explore this unique form of fan - created literature.
You can expect a lot of unique interpretations of Sans characters. In Aus Sanses fanfiction, different universes bring out diverse personalities and backstories for Sans. As a reader, you'll encounter new storylines that might be dark, comical, or full of adventure. It's like exploring a multiverse of Sans - related tales.
If Alphys found out about the Sans blue eye fanfic, it could go in several directions. She might initially be shocked and not know how to process it. However, given her interest in anime and fan - created content, she could gradually come to accept it as just another part of the rich Undertale fandom. She could also try to find out who the author was, not to scold them but out of pure curiosity. Alphys has a scientific mind, so she might even study the fanfic from a literary or cultural perspective, trying to figure out why the blue eye aspect of Sans was so appealing to the writer. Maybe she'd even discuss it with her friends, like Undyne, who would probably have a very different and more straightforward reaction.