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.
Happy, Natsu's companion, would also be very sad. He was used to Lucy being around and would miss her presence. The whole Fairy Tail guild would be in mourning. Erza, for instance, would feel a great sense of loss as Lucy was like a little sister to her. This could lead to changes in the guild's dynamics, with some members becoming more withdrawn while others might try to be stronger to honor Lucy's memory.
Well, for Lucy, she would feel like she lost a part of herself. Natsu was always there for her, and his death would leave a huge void. Gray, who has been Natsu's rival and friend, would have his world shaken. He might even question his own strength and purpose. Erza would be in deep pain, but she would also try to hold the guild together. The younger members of Fairy Tail would look at Natsu's death as a great loss and it could change their view of the guild's missions. They would become more cautious or more determined depending on their personalities. Overall, the guild's dynamic would be severely disrupted.
One possible scenario could be Levy getting caught in a powerful dark magic spell during a battle. The spell slowly drains her life force as she tries to fight it off but fails. Another could be that she sacrifices herself to save her friends in the Fairy Tail guild. She might jump in front of a fatal attack meant for one of her beloved comrades.
The guild would be in deep mourning. Elfman and Lisanna would be especially devastated as she is their sister. The guild's morale would take a huge hit. Mirajane was often a source of strength and stability for the younger members. Without her, there would be a sense of emptiness in the guild hall.
The guild as a whole would be in mourning. They would hold a big memorial for her. Her death could also inspire some of the younger members to train harder so that they can prevent such tragedies in the future. For instance, Wendy might focus more on her healing magic, hoping to be able to save lives in similar situations in the future.
The death of Iago has a profound impact on the other characters. The ones he deceived and wronged may experience a complex mix of emotions. There could be a sense of vengeance satisfied, but also a feeling of emptiness or even guilt for not having seen through his schemes earlier. Those who were caught in his web of lies may find it hard to fully trust again right away, but over time, his death may allow them to start rebuilding their relationships. The overall mood among the remaining characters may shift from one of suspicion and fear to one of cautious hope and a new - found determination to move forward in a more positive way.
If Erza were to die in a Fairy Tail fanfiction, it would have far - reaching consequences. Her death could be the catalyst for a more serious and somber tone in the story. The remaining characters would have to reevaluate their lives and goals. Some might become more reckless in their battles, feeling they have nothing left to lose. Others might become more cautious, fearing more losses. Her death could also inspire a new generation of mages in the guild to strive to be as strong and noble as she was, even in her absence.
For Stefan, if Katherine dies, it could be a huge emotional release. He has been so tangled up with her for so long. Her death might finally let him move on completely and focus more on his relationship with Elena or just find peace on his own.
Caroline would also be devastated. As Stefan's friend, she would have to deal with the loss. It could make her more determined to protect the town from any threats, as a way to honor Stefan. Bonnie might try to use her magic to bring him back, which could put her in a dangerous situation, especially if it involves dark magic. The other vampires in Mystic Falls would also feel the impact. Some might see it as an opportunity to gain more power, while others might fear for their own safety as the power balance in the town shifts.
For Bonnie, Elena's death could be a huge blow. Since they are best friends, Bonnie might be consumed by grief and use her magic in dangerous ways, either trying to bring Elena back or lashing out at those she blames. Caroline would also be devastated. She would probably try to keep the group together in the face of this tragedy, but also struggle with her own sadness. And for the other characters in Mystic Falls, Elena's death could change the power dynamics. Some might see it as an opportunity to gain more control, while others would be afraid of the chaos that could follow.