Some fanfictions in 'natsu x grey lemon' might focus on the theme of family. Maybe they create a family - like bond, or they are dealing with issues related to family. There could also be a theme of redemption, where one of them has made a mistake in the past and is trying to make up for it through their relationship with the other.
One common theme might be adventure. Since they are two characters (presumably from some fictional world), their stories could involve going on exciting quests together. Another could be friendship, as they might develop a deep bond through their shared experiences.
The main characters are Natsu and Grey Lemon. Natsu is likely to be a strong - willed and energetic character, while Grey Lemon might have some unique traits that make their relationship interesting.
One popular theme could be adventure. They might go on a journey together, facing various challenges and monsters. Another theme could be friendship. Maybe they start as acquaintances and gradually develop a deep and meaningful friendship. Problem - solving is also a common theme, where they work together to solve a mystery or a problem in their world.
One key element is the unique relationship between Natsu and Grey. The lemon aspect often adds a bit of spice or tension to their interactions. For example, it could be a source of banter or a new way for them to understand each other.
One popular theme is the exploration of their relationship's development. Since they have a complex relationship in the original work, fanfics often delve into how they grow closer. Another theme could be dealing with jealousy, as other characters might be involved in their story arcs.
One popular theme is adventure. Writers often send Grey and Mirajane on exciting quests together, facing various challenges and enemies. This allows for a lot of action and character development as they rely on each other.
I'm not really sure about specific 'grey x natsu lemon fanfiction' stories. You could try searching on popular fanfiction websites like Fanfiction.net or Archive of Our Own. They usually have a wide variety of fan - made stories, and you might be able to find some good ones there.
One popular theme could be their shared adventures. Since they are both part of the same world in the series, stories could focus on them going on quests together. Another theme might be the development of their friendship into something more. For example, how they gradually realize their feelings for each other through different events and interactions.
One popular theme is the power dynamic. Christian Grey is often depicted as a powerful, wealthy man, and exploring how that interacts with the reader - character's more ordinary life can be fascinating. Another theme is redemption. Maybe he has some flaws or a troubled past, and the story shows his journey towards being a better person through his relationship with the reader. Also, the theme of love against all odds is common. Despite their differences in status or personality, they find a deep connection.
I'm not sure about the common themes in this specific fanfiction as I haven't read many of them. But it could potentially include themes of friendship evolving into love, adventure, and the discovery of new powers.