The masters would probably be very confused at first. They are used to summoning heroic spirits with a certain set of characteristics and Naruto's appearance and abilities would be completely foreign to them. For example, Shirou might be shocked and immediately on guard, trying to figure out if Naruto is a threat or an ally.
I was a bit shocked at first. It was so unexpected and it made me realize a new aspect of male sexuality. But then I also felt a strange sense of closeness, like we had shared a very private moment.
In Naruto future reaction fanfiction, characters might react to various things. For example, they could react to new jutsu developed in the future. They might be amazed at the power and creativity behind it. Maybe Naruto himself would be excited to see how the next generation has advanced the art of ninjutsu.
Well, German language would be a key element. Characters could be speaking German phrases here and there. For instance, they could say 'Gute Nacht' (good night) at the end of the story. German cars like BMW or Volkswagen could also be in the story. Maybe the Griffin family wins a German car in a raffle and they take it for a wild ride through the German countryside. And don't forget about German festivals. An Oktoberfest - like celebration could be going on in Quahog, with everyone wearing lederhosen and dirndls and having a great time.
One possible good night story could be about Stewie visiting Germany. He gets lost in a Bavarian forest and meets friendly woodland creatures that speak German. They help him find his way back to his family by following the sound of an oompah band playing in a nearby village. The end of the story has Stewie safely back in his bed, ready to sleep after his little adventure.
Well, if it's a non - malicious situation, the girl might laugh it off and tell the guy to leave immediately. Because the locker room is a private space for girls.
One interesting 'fate stay night reaction fanfiction' story could be about how the characters react to a modern - day setting. For example, seeing Saber in a shopping mall and her reactions to all the new things around her.
Naruto would be devastated. He has always idolized his father, so being betrayed by him would shatter his world. At first, he might be in denial, not wanting to believe that Minato could do such a thing.
He might be really surprised. Some fanfictions could show him in situations he never thought of, like different kinds of friendships or battles. He'd probably be curious about how fans see him and his world.