Another interesting idea is a time - travel based fanfiction. The OC accidentally travels back in time and meets Gowther in his past. This could lead to a lot of drama as the OC tries not to disrupt the timeline while also getting closer to Gowther. They could end up changing small things that have big impacts on their relationship.
Archive of Our Own (AO3) is a great place to start. It has a large collection of fanfiction from various fandoms, including Seven Deadly Sins where Gowther is from. You can use the search function to specifically look for Gowther x OC stories. There are often tags that can help you narrow down your search, like the genre of the story or the rating.
It's a story about two young individuals, Jack and Diane, and their experiences and relationships. Maybe it's a tale of love, friendship, or adventure. But without specific details, it's hard to say exactly.
Diane Cloudy's novels included "Black-bellied Female Empress: Demon Lord, Be Good and Don't Do Anything,""Young Master Farming Date,""The Husband of Peace, Don't Run,""Fierce Wife, Home Owner, Likes Farming,""Su Ji,""Superpowered Sweet Wife: Subduing the Cold and Cold Husband, Ancient Heavenly Devil, Evil Farmer Woman, Female Lead Has Disfigured Her Character Set Again, 9th Master's Little Escaping Wife, I Won't Be able to Catch Her If She Run Again, Chronicles of the 50s, Rebirth: Lotus Step by Step, Poison in My Heart, Yun Shu Asks. I hope you like this fairy's recommendation. Muah ~😗
Since we don't know more about Diane, her story could cover a wide range of topics. It might be a story related to her family. For instance, she could be sharing memories of growing up in a big family, the relationships she had with her siblings and parents. There could be stories about family traditions, holidays spent together, and how her family influenced who she is today. It could also be a story about a personal transformation she had, like how she changed from being a shy person to someone who is confident and outgoing.
Well, it depends on how you interpret their interactions. Some might say they do get together in a way that's meaningful within the story's context. There are various moments and events that hint at their growing connection.
I'm sorry, I don't have specific information about Diane Adler at hand. Maybe she is a relatively less - known mathematician, or her story has not been widely publicized in the general knowledge sources I'm familiar with.