One idea could be exploring how Ein deals with his amnesia in the context of his relationships in the Aphmau world. Maybe he forgets his past deeds and tries to start anew, but others are skeptical.
You could focus on the mystery aspect. Ein wakes up with amnesia and has to figure out who he was and why certain people seem to fear or hate him. This could involve him uncovering secrets about his own past actions in the Aphmau universe.
One great 'aphmau and ein fanfic' is 'Aphmau's Adventure with Ein'. It has an interesting plot where Aphmau and Ein team up to solve a mystery in their village. The characters are well - portrayed, staying true to their original personalities from the source material.
Well, start with a strong hook. Maybe start with Ein in a dangerous or confusing situation due to his amnesia right from the start. For instance, he could be in the middle of a battle but not know who the enemies or allies are. Then, as you write, build on his character development. Show how he slowly discovers bits of his past while also forming new relationships or redefining old ones in the Aphmau fanfic.
One common theme is friendship. Fanfics often explore the development of the friendship between Aphmau and Ein, how they support each other through various challenges.
One great 'aphmau x ein fanfic' is 'Aphmau and Ein's Unlikely Bond'. It focuses on how their characters, with their different personalities, come together in a really interesting story. The author does a wonderful job of building their relationship gradually, and the plot has some exciting twists and turns.
One common theme is friendship. Since Aphmau and Ein are from the same universe, many fanfics explore how they can become friends despite their differences. Another theme is adventure. Writers often send them on exciting quests together.
One idea could be a story where Aphmau and DanTDM team up to save a magical world. They could each bring their unique skills, like Aphmau's leadership and DanTDM's gaming knowledge. Another idea is a fanfic set in a modern high school where they are classmates and have to work together on a school project, and during the process, they discover they have more in common than they thought. Or perhaps a story where they are transported to a parallel universe and have to find their way back home while facing various challenges along the way.
Well, you could write a fanfic where the reader is a time - traveler. They end up in Aphmau's time period and have to blend in. They meet Aphmau and end up changing some small events in the past which has unexpected consequences for the future. Or perhaps the reader is a famous singer in the Aphmau universe and Aphmau is a huge fan. They meet at a concert and become friends and go on to collaborate on a special project.
One idea could be that Aphmau and her friends get trapped in a spooky forest on Halloween night. They have to find their way out while being chased by shadowy creatures. Another idea is that Aphmau's town is visited by a group of traveling Halloween performers who turn out to be magical beings. Or perhaps Aphmau discovers a hidden Halloween realm where all the classic Halloween monsters are real and she has to find a way to get back home.
One idea could be a time - travel plot. The main character goes back in time to the early days of Aphmau's world and has to navigate the different events without changing the future too much. Another idea is a 'what - if' scenario, like what if Aphmau never became a lord? They could explore how the different characters' lives would be different.
One idea could be a story where Aphmau and Gene have to team up to save their town from a mysterious dark force. They start off as enemies but gradually learn to trust each other during the adventure.