The popularity of 'the devil is a part timer emi x maou fanfic' mainly lies in the interesting relationship between Emi and Maou in the original work. Fans are eager to see more of their interactions and how their relationship could develop further in fan - created stories.
Another way is by exploring their pasts. Maybe they discover that they have more in common than they thought in terms of their upbringing in their respective worlds. This newfound knowledge can make them more empathetic towards each other. For instance, if they find out that they both had a mentor figure who had a big impact on their lives, it could create a bond.
There's 'Unexpected Bonds' which is a really interesting fanfic. It focuses on how Emi and Maou deal with new challenges together and how their relationship evolves through that. It has some really sweet moments between them that fans of the pairing will love.
Their relationship can be developed through shared experiences. For example, if they go on a mission together to save a human from a demon's curse. During this mission, they would have to rely on each other, communicate more, and understand each other's strengths and weaknesses better. This would bring them closer and deepen their relationship.
A common theme is the relationship between Emi and Maou. Whether it's a slow - burn romance or a more platonic friendship evolving, it's often explored.
One idea could be that Emi and Maou have to team up against a new threat in the human world that is more powerful than any they've faced before. Maybe a powerful demon from the other world has found a way to cross over and is causing chaos, forcing Emi and Maou to put aside their differences and use their combined powers to stop it.
One idea could be that Maou and Emi have to team up to face a new, more powerful demon from Maou's past. This demon challenges Maou's leadership and Emi realizes she has to help him to keep the peace in their current world.
One great fanfiction could be 'The Unlikely Alliance' where Emi and Maou have to team up in a different way than in the original story to face a new threat. It has really interesting character development.
One popular fanfiction might be 'Maou and Emi's New Adventure' where they face a new threat in the human world together. It's full of their typical banter and some sweet moments.