They could have been friends. Maybe they played together in the neighborhood or had some shared experiences like going to the same school. They might have bonded over things like a mutual dislike for a bully or a love for a particular sport.
It's possible that they were more like acquaintances. They knew each other's names and had a few brief interactions. For instance, they could have met at a local park where Luke showed Percy some cool sword - fighting moves (because of the whole demigod thing that they might not fully understand yet). But they weren't super close yet. Their relationship was more on the surface level, but enough for Percy to recognize Luke when they met at camp.
Well, if Percy had known Luke before camp, their initial meeting might have made Percy trust Luke more at first. He might have seen Luke as an old acquaintance and not suspected any ill intentions. Maybe Percy thought Luke was a cool older kid and looked up to him, so when they met again at camp, he was predisposed to think of Luke as a friend.
One aspect that could be explored in a Percy Jackson and Luke fanfic is their opposing views. Percy stands for the good, while Luke turns to the dark side. A fanfic could delve into what might have made Luke change his path if Percy had intervened earlier. It could show their early interactions at Camp Half - Blood and how Percy's loyalty and Luke's growing resentment were seeded.
At first, it could be quite rocky if they find out later in the story. Percy might be angry that Luke has been keeping secrets or has done bad things in the past. But eventually, they would likely grow closer as they realize they are family and start to support each other.
Annabeth could be one of the people to help Percy train. She's very intelligent and could come up with strategic training plans for him. She might teach him how to analyze his opponents' weaknesses more quickly.
Well, in fanfic, Percy and Luke's relationship can be re - imagined in many ways. A lot of fanfic writers like to delve into Luke's backstory more deeply. They might show how his relationship with Percy could have been different if certain events had not occurred. Sometimes, it could be a mentor - like relationship where Luke imparts some knowledge to Percy that he didn't in the original. Or it could be a more competitive one where they constantly try to outdo each other in different challenges that the fanfic writer creates.
In fanfiction, Percy might train by sparring with other half - bloods. They could use their unique powers and weapons, like Percy with his sword Riptide. This would improve his combat skills and his ability to think quickly in battle.
I'm not sure specifically as it could be many different things. It might be a fan - created story where Percy, perhaps from the Percy Jackson series, causes destruction at a camp. Maybe he's been wronged in some way or is under some sort of dark influence.
I really liked 'Luke and Percy: A New Beginning'. In this fanfic, the author imagines a scenario where Luke gets a second chance. Percy is initially skeptical but as the story progresses, they form a bond that is both unexpected and heartwarming. It's a great read for those who want to see a different side of their relationship.
A common theme could be redemption. Since Luke made some bad choices, a fanfic could focus on his journey towards redemption. Percy could play a key role in this, either by being the one to offer forgiveness or by being the example that makes Luke want to change.
He might meet other demigods who are not affiliated with the camp. These could be demigods who have been living on their own, trying to hide from the monsters and the chaos of the demigod world. They could have different views on how to use their powers and might teach Percy new ways to fight or survive.