Perhaps a story where they start off as enemies but gradually come to respect each other. Alastor might initially oppose Lucifer's methods, but as they interact more, they realize they have common goals, like dealing with a greater threat to their world. This could involve a lot of tense encounters and character development.
Another plot could be that they are both in love with the same being. This creates a love triangle situation where they have to compete for the affection of this other character. Their rivalry in this context could lead to some really intense and emotional scenes, as well as tests of their friendship or new - found respect for each other.
One idea could be that they form an alliance to rule over a certain realm. They combine their powers and knowledge to bring order in a chaotic land. Alastor's cunning and Lucifer's authority could make for a very interesting power dynamic.
One popular lucifer x alastor fanfiction might be 'The Unlikely Alliance'. It explores their complex relationship in a world full of chaos and power struggles. The story delves deep into their personalities, with Lucifer's charisma and Alastor's mysterious nature creating an interesting dynamic.
One idea could be that Harry, with his magical skills, somehow ends up in Lucifer's realm. He tries to find a way back home while Lucifer is intrigued by his magic and wants to learn from him. Another could be that they team up to fight a common enemy that threatens both the wizarding world and Lucifer's domain.
A possible plot for Hazbin Hotel Alastor x Charlie fanfiction is that there is a new threat to the hotel, a powerful demon who wants to shut it down. Alastor and Charlie must put aside their differences and work together to stop this threat. Alastor could use his radio - based powers to gather information and Charlie could use her charm to convince other demons to help them. Along the way, they might start to develop deeper feelings for each other as they see sides of each other they hadn't noticed before. Another idea is that Charlie tries to teach Alastor about modern technology and it leads to some really funny and endearing moments between them, all while they are also dealing with the day - to - day operations of the hotel.
Well, you could have a plot where the OC is a singer in a club that Lucifer frequents. He's drawn to her voice and her free spirit. As they get to know each other, the OC discovers Lucifer's devilish side but isn't afraid. This could lead to a relationship where they both learn from each other. Also, the OC could be a journalist trying to expose Lucifer's secrets, but instead falls in love with him during the process.
One idea could be a story where Lucifer and Alastor have to team up to deal with a new threat to Hell. Maybe a powerful demon from another realm is trying to take over, and they have to put aside their differences. They could start off not trusting each other much, but as they face challenges together, they begin to respect one another's abilities.
Well, a plot idea could be that Alastor discovers a new power within himself in the context of a fanfiction. This new power could either help or hinder his standing in Hell. Also, perhaps a plot where Alastor tries to start his own 'radio show' in Hell that's different from his usual broadcasts, and it causes all kinds of uproar among the demons. Or, what if Alastor is forced to team up with someone he really dislikes, like Vox, to face a common threat to their power in Hell?
One plot idea could be that Lucifer and Sabrina team up to solve a mystery that threatens both their worlds. They start off as reluctant allies but as they work together, they begin to understand and respect each other.
One plot idea could be Lucifer seeing a different side of Adam that no one else has. Maybe Adam shows kindness towards a lower - class demon, which makes Lucifer question his own views. Another could be that they team up to solve a mystery in Hell that threatens both the sinners and the native demons. And a third idea is that Adam tries to introduce Lucifer to more 'human' concepts like forgiveness, which Lucifer initially resists but gradually comes to understand.
One plot idea could be that the reader, an angel, is sent on a mission to redeem Lucifer. Along the way, they have many intense philosophical debates about good and evil, which gradually lead to an unexpected bond between them.
You can try Archive of Our Own (AO3). It has a large collection of fanfiction from various fandoms, including lucifer x alastor. The site is well - organized, allowing you to search by tags, ratings, and word count.