In an office setting, Natsu's magic could be harnessed for security. His ability to sense danger and his strength can be used to protect the office from intruders. Lucy's magic could be used for data storage. She could use her celestial keys to create magical compartments where important files are stored safely. Also, Natsu could use his magic to power up office equipment that runs on heat or energy related sources, while Lucy's spirits could assist in customer service by interacting with clients in a friendly and helpful way.
Well, perhaps in this office fanfiction, the office is actually a front for a secret magical organization. Natsu and Lucy are brought in not knowing the real nature of the place. As they start to uncover the truth, they find themselves in the middle of a power struggle between different factions within the organization. Their relationship grows as they rely on each other to survive and expose the corruption within the organization.
They can develop through facing challenges. For example, if they encounter a powerful dark mage, they will have to learn new spells and strategies to defeat the enemy, which will make them stronger.
One way could be by having Gogeta arrive in the Fairy Tail world through a magical portal. Maybe he's on a quest in his own universe and gets accidentally transported to the Fairy Tail realm. He could then interact with the Fairy Tail guild members, perhaps even joining them on some of their adventures and using his unique powers to help out.
You can start by looking on fanfiction websites such as Archive of Our Own (AO3). It has a large collection of fanfictions from various fandoms, including Fairy Tail. Just search for 'Gale Office Fairy Tail' in the search bar and you'll likely find some relevant stories.
One way to develop the Nalu child is through their experiences. For example, if they go on a solo adventure and face challenges alone, it can build their independence and confidence. They might learn to rely on their own instincts and magic skills. Their values can also be a key factor. If they value fairness and justice like Lucy, but also have Natsu's sense of loyalty to the guild, these values can drive their actions. Additionally, their appearance can give hints to their character. If they have Natsu's spiky hair but Lucy's eyes, it could symbolize a blend of their parents' personalities, and this can be explored further in how they act and interact with others.
In the office setting, Draco can be developed by showing his struggle to adapt to a more inclusive work environment. He could start as a cold and distant colleague, but as he interacts with Hermione, he begins to soften. In the bedroom, his vulnerability can be explored. For example, he might be shy about sharing personal space. Hermione can develop by standing up to Draco's initial rudeness in the office. In the bedroom, she can show her nurturing side, like making sure Draco is comfortable.
Romeo's fire - based magic could be used in the high school's cooking class in a unique way. He might accidentally set the stove on fire once, but then learn to control it to make amazing flambe dishes. Wendy's healing magic could be useful in the school's first - aid club. She could heal minor injuries of her classmates quickly.
There are many Gale Office Fairy Tail fanfictions that explore different relationships. Some might focus on Gray and Juvia's relationship in the office context. Juvia could be the overly helpful secretary always bringing Gray coffee, while Gray is trying to focus on his important paperwork. It's a cute and funny take on their dynamic. There could also be fanfictions where the whole Fairy Tail guild is on a team - building exercise in the Gale Office and all sorts of chaos and hilarity ensue.
These fanfictions contribute to the Nalu ship by giving fans more content. They allow for different scenarios and interpretations of Natsu and Lucy's relationship. For example, a fanfiction might show a side of their relationship that wasn't explored in the original series, like a more romantic or domestic side. This makes fans more invested in the Nalu ship.
Another aspect could be inventory management. In a game, players have an inventory to store items. In Fairy Tail, characters could have a magical inventory. They could collect items during their adventures, like rare magical crystals or ancient spell books. The gamer ability would govern how much they can carry, how they can use these items in battles or for other purposes, and how they can upgrade their inventory space over time.