Yes, in certain fanfictions Natsu and Wendy are considered siblings. This could be due to various reasons. Maybe the author wants to explore a different family dynamic within the Fairy Tail world. It can add an interesting layer to their relationship, like how they support each other more like family members would. Also, it might change the way they interact with other guild members as well.
Erza would probably be a bit protective at first. She'd want to make sure that Natsu and Wendy are really in love and not just caught up in some passing fancy. Gray might tease Natsu a lot about it, but also be happy for him deep down. Lucy would be excited and might even try to play matchmaker to some extent, giving them advice on how to handle their relationship.
One possible plot twist could be that they initially deny their feelings due to their close friendship within the guild. They might think it's just a strong bond of comradeship. Another could be that an outside force tries to separate them because their combined power when in love is seen as a threat. For example, a dark wizard might try to break their relationship before they fully realize their love for each other.
Wendy would probably be surprised at first. After all, Natsu's greetings are often unexpected. But then she would be really happy, with a big smile on her face. She might blush a little too, since it's such a special and personal greeting from Natsu.
You can try websites like Fanfiction.net or Archive of Our Own. They have a large collection of fanfictions, and you should be able to find ones related to Natsu and Wendy's love story there.
Well, it depends on your taste. Some 'natsu and wendy kiss fanfiction' might be more action - packed with the kiss being a part of a big adventure or rescue scene. While others could be more centered around the emotional growth of the characters towards each other which eventually results in a kiss. It's best to explore different fanfiction platforms and read the summaries to find the ones that appeal to you.
In some Fairy Tail fanfictions, Natsu and Wendy might be depicted in a romantic relationship. However, this isn't a common or canon relationship in the original Fairy Tail series. Fanfiction writers often explore different pairings for creative and imaginative purposes.
Yes, there are quite a few out there. You can start by looking on popular fanfiction websites like FanFiction.net or Archive of Our Own. Just search for 'natsu and wendy married' in their search bars, and you'll likely find some interesting stories. However, the quality can vary greatly, so be prepared to do some sifting through different works.