One common theme could be the exploration of their relationship dynamics. It might involve how they interact, whether it's in a friendly way or with some underlying tension.
I'm not sure about specific 'once ler x greed ler fanfic' off the top of my head. You could try searching on popular fanfic websites like Archive of Our Own. They usually have a wide variety of fanfictions in different categories.
Agora isn't based on an actual true story. It weaves a fictional tale while incorporating some aspects that might draw parallels to historical circumstances, but it's not a direct retelling of real events.
In most cases, Agora does allow for scheduling of stories. However, it's important to explore the app's interface and settings to understand exactly how it works for scheduling and any associated limitations or requirements.
Since I don't know the exact content of 'agora real stories', it could contain a variety of things. Maybe there are stories about individuals who started from nothing and built great businesses. Or perhaps there are tales of people who found love in the most unexpected places. There could also be stories about acts of kindness that changed someone's life for the better.
In Greed Ler x Reader fanfictions, a prevalent theme is the exploration of emotions. Since it's a relationship - based fanfic, the development of feelings between Greed Ler and the reader is a big part. There are often themes of trust - building as well. The reader may start off being cautious around Greed Ler, and over time, trust is either built or broken. Additionally, the theme of mystery is common. Greed Ler may have secrets, and the fic revolves around the reader uncovering those secrets. And of course, the theme of attraction, whether it's physical or emotional, is almost always present.