One common theme is sacrifice. Characters often give up their lives for the greater good of the guild or their friends. For example, in many stories, a hero might die to save the guild from destruction.
In some Fairy Tail fanfictions where Juvia dies, it could be a very emotional and impactful scenario. It might be due to a powerful enemy she couldn't defeat, sacrificing herself to save Gray or her friends. Her death could lead to Gray's character development, making him more determined to fight against the forces that took Juvia from him.
One interesting 'Fairy Tail Gray Death' fanfiction could be the one where Gray's unique magic is explored in more depth during a life - threatening situation. Maybe it shows how his ice - make magic could be used in unexpected ways to fight off the concept of 'death' in the story.
Well, many fanfic writers take creative liberties with Lisanna's death. Some might show it as a heroic sacrifice, where she gives up her life to save others in the guild. This could then be a source of inspiration for the other characters, pushing them to be better and stronger. Others may depict it in a more tragic and unexpected way, perhaps due to a misunderstood magic spell or an unforeseen enemy attack.
The guild would be devastated. Natsu would probably be one of the first to be enraged. He'd vow to find whoever or whatever was responsible and make them pay. His fire would burn hotter than ever as he channels his anger.
Gray would be devastated. He might go into a state of deep depression, isolating himself from the rest of the Fairy Tail guild. He would blame himself for not being able to protect her, especially if her death was related to her love for him. Gray would probably be filled with anger as well, and he would vow to take revenge on whoever was responsible for her death.
Natsu would be extremely angry. He is very protective of his guildmates. Levy's death could fuel his rage and make him go on a rampage against the enemies. He might feel guilty for not being there when she needed help. As for Erza, she would take Levy's death as a sign of her own failure to safeguard the guild. She would become more strict in training the members and more vigilant in protecting the guild from future threats.
You can try fanfiction websites like Archive of Our Own (AO3) or FanFiction.net. These platforms usually have a wide range of fanfictions, and if you search specifically for 'Fairy Tail Gray Death', you might find some great reads.
One great 'Fairy Tail Death Dragon Slayer' fanfiction is 'The Ascent of the Death Dragon Slayer'. It has an interesting plot where the main character, a Death Dragon Slayer, has to face challenges that are different from the normal Fairy Tail adventures. The author does a great job of portraying the character's struggle with their unique powers.