Who could be a possible candidate for Lucy Heartfilia's real father in an OC (Original Character) fanfic?

Natsu is a very likely candidate. Their relationship in the original series is quite close and has a lot of potential for a romantic sub - plot that could lead to him being the father. Their chemistry would make for an interesting story as they navigate parenthood.

A great storyline could be that her real father is an OC time - traveling mage. He accidentally travels to the future and falls in love with Lucy's mother. But then he gets trapped in the future and has to watch his daughter grow up from afar. This could lead to some really emotional scenes when they finally meet.

She could be really shy at first. Since Lucy is often quite outgoing in the series, her sister could be the opposite, taking time to warm up to people in the guild. For example, she might hide behind Lucy when meeting new members.

Death the Kid would be an extremely interesting character for Lucy to interact with. His obsession with symmetry and his powerful abilities as a meister could lead to some really unique scenarios. Lucy might be both fascinated and a bit put off by his quirks at first. But as they get to know each other, they could learn a great deal from one another. For example, Death the Kid could help Lucy understand the importance of precision in combat, which could enhance her use of celestial spirit magic, while Lucy could introduce him to the concept of celestial spirits and their different powers.

It could be a heroic character she meets during her quest. Maybe a powerful wizard or a brave knight who has a brief but intense encounter with Lucy, leading to her pregnancy.

First, focus on Lucy's emotions. Since she's pregnant, she'll have a whole range of feelings like joy, fear, and anticipation. Show how these emotions influence her actions and decisions. For example, she might be more cautious about going on missions. Second, develop the relationships around her. How do her friends and family react? Their reactions can also drive the story. Third, give her a goal related to the pregnancy, like ensuring a safe future for her child, and let her character grow as she tries to achieve that goal.

Lucy might gain more confidence. Knowing that her father loves her and is there for her could make her feel more secure. This could translate into her being more assertive in her adventures and less likely to be pushed around by others.

Another theme is the exploration of magic. Lucy has her celestial magic, and the OC usually has some form of unique magic as well. The fanfictions often explore how their different magics can work together or clash. It's interesting to see how the authors play with the magic system in the Fairy Tail universe to create new and exciting storylines for Lucy and the OC.

Well, obviously she'll interact with her past self. It would be really interesting to see how she reacts to seeing a younger and more naive version of herself. She could also meet characters who are no longer alive in the present. For example, if there were any great wizards from the past who played important roles in the history of magic. Additionally, she might cross paths with some of the villains from the past who were causing trouble long before the current villains in the story. This could change her perspective on the whole conflict in the present.

Gray could also be a possibility. He and Lucy have a friendly rivalry and there are moments where their relationship could be interpreted as having deeper feelings. It would be an interesting twist if Gray was the father, as it would change the dynamics between him, Natsu, and Lucy in the fanfic.