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.
Well, in fanfiction, the idea of Natsu and Wendy being siblings is quite common. Fanfic writers often like to play with relationships in the original story. They might think that Natsu's protective nature towards Wendy could be seen as a brotherly instinct. And Wendy's respect and admiration for Natsu could be like that of a younger sister. This sibling - like relationship in fanfictions can lead to many new and exciting storylines.
The best chapter pointer here is Chapter 243, "How Could It Be Her?!". It opens with Hahaha, the young master's face has gone white, but I got a scare just now... and closes on Perhaps feeling that the atmosphere had become unbearably tense, Director....
If you want the clearest chapter reference, go to Chapter 280. Early on, The small mountain village was already dark and lightless at night, and...; later, the chapter leans on Zhao Lang didn't dare to waste time; he took his flashlight and hit the....
A practical answer is Chapter 208, because it turns the idea into a concrete scene. The chapter opens with Jiang Yan clicked his tongue, "What's this about money?, adds pressure through After the staff counted, she had a total of 22 points, which was a..., and ends on Seemingly sensing the raging.
A practical answer is Chapter 240, because it turns the idea into a concrete scene. The chapter opens with Wuuuuh He Bao truly deserves it, Mom always knew you could do it!"..., adds pressure through Why did Director Sun read out Jiang Yan's name instead of Shang Shaojing?!, and ends on Right.
A practical answer is Chapter 229, because it turns the idea into a concrete scene. The chapter opens with Huo Ziyang's face had already turned deathly pale., adds pressure through It looks like we need to continue working hard too., and ends on Isn't it enough to teach a child a lesson when he.
A practical answer is Chapter 247, because it turns the idea into a concrete scene. The chapter opens with Facts have proved that arch-enemies often understand each other the best., adds pressure through Madam, please receive your two thousand catties of red sweet potatoes."..., and ends on Why.
Look to Chapter 239 for the clearest answer. It begins with I can't believe it, I thought the live broadcast was over, but here's a..., keeps building through Now, they have to vote for who transformed the most successfully., and lands on Wen Jiaojiao was happy, but when she saw the total score.
Chapter 274 is the strongest chapter-level answer because it starts from Upon hearing this, Officer Xu became even more excited, but catching a... and follows through on I believe with some rest, he will recover." Relieved at last, Hu Zi's....
Look to Chapter 238 for the clearest answer. It begins with Jiang Li was actually first on all three leaderboards?!, keeps building through Could it really be that outrageous?!, and lands on And, to Zhou Xu's alarm, they did find a problem..
Look to Chapter 218 for the clearest answer. It begins with However, what surprised the guests even more was that the harvest Director..., keeps building through As the results were revealed, the black cloth originally covering the test..., and lands on Thinking about this, Jiang Yan started to.