In some fanfictions, Thor accidentally hurting Loki might be a catalyst for Loki to explore his own power more deeply. He might realize that he's been relying too much on Thor for protection. So, he could start training in secret, and when Thor discovers this, it could lead to a whole new dynamic in their relationship, with Thor feeling proud yet also a bit worried about Loki's new - found independence.
One possible plotline could be Loki initially being angry and resentful towards Thor for hurting him. But as the story progresses, Thor's guilt drives him to make amends in a big way, like going on a dangerous quest to find a rare healing item for Loki. This could lead to a deeper understanding between them and strengthen their bond in the end.
A plot could involve the other Asgardians' reactions to Thor hurting Loki. Some might side with Loki, believing Thor was careless. This could create a rift in Asgardian society. Thor then has to not only make it up to Loki but also prove to the other Asgardians that he is truly remorseful. Loki, on the other hand, has to decide whether to forgive Thor publicly or privately, which would have different implications for their relationship and for Asgard as a whole.
One possible plotline could be that the OC is a new Asgardian who was overlooked before. Loki, after his experiences with Thor, meets this OC. The OC has some unique power that Loki wants to use for his own gain at first. But as they interact more, Loki starts to develop real feelings for the OC. They could go on adventures together, facing threats to Asgard and Loki has to choose between his old ways and protecting the OC and Asgard.
One possible plotline could be that the Avengers are under the influence of a mind - controlling villain. They turn on Steve because he's seen as a threat to the villain's plan at that moment. Another could be a misunderstanding. For example, false evidence is planted that makes the Avengers believe Steve has betrayed them, so they accidentally hurt him while trying to stop what they think is his betrayal.
One possible plotline could be Loki's journey of self - discovery. After being abandoned as a child, he might struggle with feelings of unworthiness. Thor could then play a role in helping Loki realize his true potential. Maybe Loki initially resents Thor for having a more 'normal' upbringing, but as the story progresses, they come to understand each other better.
One interesting Young Loki and Thor fanfiction could be about their adventures in Asgard as kids. Maybe they get into trouble while exploring a forbidden part of the realm.
Maybe Loki returns after being presumed dead. Thor is overjoyed at first, but then realizes Loki has some secrets he's been keeping. They have a tense but ultimately heartwarming conversation as they catch up on all that has happened.
One interesting story could be about Thor and Loki having to team up against a new, powerful enemy that neither of them can face alone. This forces them to put aside their differences and use their combined powers and wits to save Asgard.
There's 'Thor's Redemption in Loki's Arms'. In this story, Thor realizes his true feelings for Loki after a series of events that nearly tear Asgard apart. It's a tale full of emotion and character development.
Another plotline might involve Loki getting caught in a time - loop within an Avengers - related adventure. He keeps reliving the same day, and each time he has to interact with the Avengers in different ways to try and break the loop. This could lead to some really comical and also tense situations as he tries to figure out what's going on while the Avengers are getting increasingly suspicious of his behavior.
Forgiveness is another key theme. Loki has to decide whether to forgive Thor or not. This can be a complex decision, influenced by their past relationship, Loki's current state of mind, and how Thor tries to make amends.
One plot idea could be Thor and Loki as younglings getting into mischief in Asgard's forbidden areas. Maybe they accidentally unleash a minor magical creature that causes chaos in the palace. Another could be a story where they compete in a friendly, yet intense, training tournament to prove who is the better warrior at a young age. And they could also go on a secret adventure outside of Asgard, defying Odin's rules, to explore a rumored enchanted forest.