Fanfiction is basically stories written by fans. It can be about existing characters from books, games, etc. For example, if Vergil is from a game, there might be fanfictions that explore his backstory further, or put him in different scenarios like a modern-day setting or a new adventure.
Often, Vergil will start by observing Nero in battle. He's curious about Nero's skills and the source of his power. So, he'll watch from the shadows, analyzing Nero's every move.
Well, a really popular one is 'Vergil's Journey to Know Nero'. In this fanfiction, Vergil starts by observing Nero from afar. He's intrigued by Nero's power and his connection to the Sparda bloodline. As the story progresses, he gets closer to Nero, and they have some really intense battles together that also serve as a way for Vergil to understand Nero's fighting style and what makes him tick. It's a great read if you like action - packed and character - development - focused fanfics.
One way Nero could get to know his father in fanfiction is through dreams or visions. Maybe he starts having strange dreams where his father appears and gives him hints about his past or his personality. Another option is that he discovers some old letters or journals that his father left behind, which would provide a lot of insights.
Another plot could be that Nero's father was a great wizard, but his powers were sealed away for some reason. Nero, in his attempt to get to know his father, starts to unlock these powers. As he does so, he learns more about his father's past and the reasons behind his actions. This plot would involve a lot of mystery and discovery about his father's magical abilities and his life.
One possible plot could be that cloud is tired of his current job situation. Maybe he has a difficult boss or uninteresting tasks. So, he starts to intentionally make mistakes at work, like coming in late, not meeting deadlines, or being rude to clients in an attempt to get fired.
One common character paired with Vergil is Dante. Some fanfictions explore a romantic relationship between them, which often delves into the complex dynamic of their brotherly bond and how it could transform into something more. It's a very unique take on their relationship.
Obviously, cloud would be the main character. There could also be his boss, who is constantly frustrated by cloud's actions. Maybe there's a coworker who tries to help cloud, thinking he's just having a bad time, not realizing he actually wants to get fired.
Nero is also a popular character to be paired with the reborn as Vergil. Given Nero's connection to Vergil in the original story, in fanfiction, their interactions can range from mentorship - where Vergil helps Nero master his powers, to more adversarial relationships if the reborn Vergil has different motives.
He could also ask other fans he knows about their favorite fanfictions. These fans might be able to point him towards some really good ones. When reading fanfiction, Vergil should pay attention to the writing style. Some fanfictions use a very descriptive style, while others are more dialogue - driven. And he should keep in mind that fanfiction is a form of creativity by fans, so it might not always match the official canon exactly.