One possible plot could be Loki, having lost his place in Asgard perhaps after some misdeeds, is found by Tony. Tony, being the genius with a big heart (underneath his playboy exterior), decides to take Loki in. Loki initially resists but gradually warms up to Tony's world of technology and Earthly comforts. They might team up to fight a common enemy, with Loki using his magic and Tony his high - tech gadgets.
The plot of such a fanfiction might involve Loki escaping from some sort of captivity in the universe and landing on Earth. Tony discovers him and, instead of handing him over to the authorities, decides to adopt him. At first, Loki is a mystery to Tony, but as time passes, Tony starts to understand Loki's complex past and motives. Loki, in turn, is exposed to Tony's world of innovation and heroism. They could end up on a journey together to save the world, with Loki learning about friendship and loyalty from Tony and his friends.
At first, it would be rocky. Loki is used to being a trickster and Tony is a bit of a control freak. But over time, they'd start to respect each other. Loki would see Tony's intelligence and resourcefulness, and Tony would see Loki's power and potential for good. Eventually, they'd become like family, looking out for each other.
Maybe in a fanfiction, there is a cursed ballet. Tony Stark and Loki are both drawn to it for different reasons. Tony because of his love for all things unique and Loki because he senses dark magic. They have to team up to break the curse. During this process, Loki has to use his ballet skills (which he has been hiding) and Tony uses his tech to figure out the source of the magic. As they work together, they form an unlikely bond.
One possible plot could be that Loki, through some magical accident or time - travel mishap, ends up in a situation where he has to take care of Tony as his mother. Loki would struggle with adapting to the role at first but gradually grow into it.
Maybe Loki gets stranded on Earth and Tony offers him shelter in Stark Tower. They start to have long conversations about power, responsibility, and their respective places in the universe. Eventually, they team up to fight a common enemy, like a new powerful alien threat that neither of them could face alone.
One possible plot could be that Loki, with his mischievous nature, initially tries to deceive Tony for some personal gain. But as they interact more, they discover they have common interests in advanced technology and magic. They start to work together on a project to protect the Earth from a new threat that neither of their individual powers could handle alone. Their relationship evolves from mistrust to a deep friendship and they become mates in the sense of being reliable partners.
Well, one possible plot could be that Loki, being his mischievous self, initially tries to trick Tony Stark. But Tony, with his intelligence, sees through some of Loki's tricks. They might end up in a battle of wits, with Loki trying to outwit Stark's high - tech gadgets and Stark trying to outsmart Loki's magic. Eventually, they could find common ground in their mutual love for power and knowledge and form an unlikely alliance to face a greater threat in the Marvel universe.
One possible plot twist could be that Loki actually has a noble reason for kidnapping Tony. Maybe he wants to use Tony's intelligence to stop a greater threat that the other Avengers are unaware of. For example, there could be a hidden enemy that Loki has knowledge about, and he believes only Tony can help create a device or strategy to defeat it.
Well, it could start with Loki somehow coming across Fem Harry Potter in a dire situation in the wizarding world. Maybe she's being persecuted because of her femininity and her connection to Voldemort in a different way than in the original story. Loki, being the complex character he is, decides to take her under his wing, perhaps seeing some potential in her that others don't.
One possible plot could be Tony discovers his true parentage. He initially doesn't believe it but as he delves deeper into his past, he finds evidence that Loki is his father. This causes a huge rift between him and his adoptive father, Howard Stark. Meanwhile, Loki tries to use this new connection to manipulate Tony for his own ends.
The plot might involve Tony taking on a paternal role towards deaged Loki. He could start by providing basic care like food and shelter. As time passes, he discovers that Loki has a fear of being alone in this new state. Tony then tries to help Loki regain his confidence. They might also face external threats as some villains might try to take advantage of the deaged and vulnerable Loki. So, Tony has to protect Loki while also trying to reverse the deaging process.