Often, in fanfiction, Lucy's dreams and hopes are tied to her relationships and her growth as a mage. If she fails to achieve a long - held dream, like mastering a particular magic spell or finding a way to bring back a lost loved one, she would be deeply disappointed and cry. Her emotional nature makes her very vulnerable to such setbacks, and the writers of fanfiction often explore these aspects of her character through her tears.
Lucy could also cry when she faces betrayal. In fanfiction, there might be a new character who befriends her and then turns out to have ulterior motives. This sense of being deceived and used would be a big blow to her, and she would likely break down in tears. And sometimes, it's just the overall atmosphere of the story. If the fanfiction is set in a really dark and hopeless time in the Fairy Tail world, with the guild in danger and no clear way out, Lucy might cry out of fear and worry for her friends and the future of the guild.
Well, in fanfiction, Lucy might be crying because she lost a fight against a powerful enemy. Maybe she felt she let her friends down. For example, if she was unable to protect someone important in the story, it could lead to her breaking down in tears.
There are also scenarios where Lucy is targeted because of her celestial spirit magic. Natsu, being aware of the power and danger associated with it, ensures that no one can use Lucy's magic against her or the guild. He'll stand between her and any magic - user who tries to manipulate or harm her because of her unique abilities.
Maybe Lucy finds a long - lost spell book that belonged to a powerful Celestial Mage in the past. The spells in this book are the key to saving everyone. She spends time deciphering the ancient spells and finally manages to use one that can nullify the threat facing Fairy Tail. It could be a spell that can erase the existence of a powerful dark magic or something like that.
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 common scenario is during battles. When Natsu is in danger, Lucy might show her worry and concern, which implies her feelings for him. For example, she could be more desperate to help him compared to others.
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.
In a battle against a group of powerful enemies, Natsu overexerts himself and is on the verge of being defeated. Lucy steps in. She first summons all of her available Celestial Spirits to create a powerful defensive formation around Natsu. Then, she combines her own magical attacks with those of her spirits to drive the enemies away. After that, she uses her healing magic (if she has developed such in the fanfiction) to nurse Natsu back to health.
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.
Imagine Lucy is in the shower and she's singing a really off - key song. But little does she know that Gray and some other members of Fairy Tail are right outside the bathroom and can hear her. When she finally comes out, they start imitating her singing in a good - natured way, and Lucy is super embarrassed.