If Lucy never joined Fairy Tail, the friendships and relationships among the characters would form in a very different way. Also, many of the story arcs might not unfold as they do in the original plot.
There is a fanfiction called 'Lucy in the Alternate Realm'. This one is interesting because it sends Lucy to an alternate realm where she has to find her way back. Along the way, she meets different versions of her friends and has to use her wits and magic to survive. It's a great read for any 'Fairy Tail' and Lucy fan.
Yes, there are many non - inappropriate 'Fairy Tail Lucy' fanfictions. For example, some focus on her adventures and growth within the Fairy Tail guild. They might explore her relationships with other guild members in a friendly and positive way, like her friendship with Natsu and how they support each other during quests.
I think it depends on how it's handled. If the 'naked' aspect is just a shock - value title and the actual fanfiction is more about exploring Lucy's character growth, relationships, or her adventures in a tasteful way, it could be okay. But more often than not, it gives the wrong impression and might not be suitable for the overall Fairy Tail community which values things like friendship, courage, and magic more than such potentially inappropriate themes.
Well, 'Nerd Lucy in Fairy Tail' is another one. This fanfiction focuses on Lucy's journey as a nerd in the Fairy Tail world. She befriends other guild members who initially underestimate her but later come to rely on her vast knowledge of magic theory.
One great Lucy x Laxus fanfiction is 'A New Bond'. It focuses on how they start to rely on each other during a difficult mission. Their interactions are really well - written, with Lucy's kind heart slowly melting Laxus's tough exterior.
Perhaps it's a power related to the stars in a more direct way. Like she can draw energy from specific constellations and use it to enhance her attacks. For example, if she summons the power of Orion, she gets super strength and accuracy in her attacks.
In some fanfictions, Lucy might use her Celestial Spirit magic. For example, she could summon a powerful spirit like Leo to help fight off whatever is threatening Natsu. The spirit could provide a distraction or directly combat the enemy while Lucy tries to reach Natsu and get him to safety.
In fanfiction, the love between Lucy and Natsu is often depicted in very sweet ways. Writers may focus on their adventures together which gradually build a deeper bond. For example, during battles, Natsu's protectiveness over Lucy shows his special feelings. Their constant bickering also has an undertone of affection, like how typical couples in real life might tease each other.