Well, a common scenario is that Natsu dies in a battle against an ancient and powerful demon. He fights bravely but the demon's power is overwhelming. Natsu realizes that the only way to stop the demon from destroying the world is to use a self - destruct type of magic move. He does it, sacrificing himself for the greater good. Another could be that Natsu is tricked by a dark wizard into a magic - trapping spell. His friends try their best to break the spell but it drains Natsu's life energy until he dies. And there's also the possibility that Natsu's overuse of his dragon - slayer magic due to a series of intense battles causes his body to give out and he passes away.
Perhaps in a fan - made apocalyptic version of the Fairy Tail world. A great evil has spread across the land, and Mirajane is at the forefront of the fight. However, the evil is too strong and manages to mortally wound her. She dies in the arms of her guildmates, and her death serves as a catalyst for the remaining members to fight even harder to defeat the evil and restore peace.
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.
Another scenario could be that in a battle against a new, extremely powerful foe, Lucy is caught in a crossfire between two massive magical attacks. Despite her friends' attempts to protect her, she gets fatally injured and dies. This would have a huge impact on the other characters in the Fairy Tail guild, leading to themes of grief, revenge, and moving on.
Another scenario might be a situation where Natsu accidentally eats some magic - enhancing food that makes his emotions go wild. Lucy has to figure out how to calm him down and in the process, they realize deeper feelings for each other. For example, Natsu might start uncontrollably shooting fire everywhere, and Lucy uses her whip to lead him to a safe place where she can try to reverse the effect.
One interesting scenario could be Lucy using her Celestial Spirit magic in a unique way to tease Natsu. For example, she might summon a spirit that has a special ability related to heat, like a fire - type spirit, and then playfully use it to challenge Natsu's own fire - dragon slayer magic. This could lead to a series of humorous exchanges between them as Natsu tries to outdo the spirit's power while Lucy teases him about his efforts.
One interesting scenario could be when the baby's first magic manifestation occurs. It might happen during a guild party and startle everyone. Another scenario is that the baby gets lost in the guild's large building, and all the members, including Natsu and Lucy, go on a frantic search. A third scenario could be the baby developing a strange bond with an unexpected celestial spirit.
One interesting scenario could be Natsu and Minet going on a quest together. They might face a powerful magical beast and have to combine their skills to defeat it. Natsu's fire - based attacks and Minet's unique abilities could create a great synergy.
One popular scenario could be after a major battle where they both realize their deep feelings for each other. Natsu, being the impulsive and passionate character he is, might just grab Lucy and plant a kiss on her. Another could be in a moment of great celebration in the guild. With everyone around them having a great time, Natsu and Lucy get caught up in the moment and share a kiss. And sometimes, it might be in a more private, tender moment. Maybe Lucy is feeling down, and Natsu tries to comfort her in a more intimate way, leading to a kiss.
In some fanfictions, Natsu and Erza might have a moment where they confide in each other about their pasts. Erza could open up about her time in the Tower of Heaven and Natsu about his search for Igneel. This sharing of deep secrets would bring them closer and change the dynamic of their relationship from just being guild mates to something more like true friends who support each other unconditionally.
Well, in these fanfictions, a frequent theme is the power of love. Natsu's love for Fairy Tail is so strong that he is willing to give his life. This can also lead to themes of inspiration for the other guild members. His death might inspire them to become stronger or to uphold the values he fought for. Additionally, there can be themes of afterlife or resurrection speculations, as fans might be interested in whether Natsu could come back in some way, which adds an element of hope to the otherwise tragic scenario.