Maybe it's a strict teacher or mentor in their world. If they are breaking some rules, like skipping important training or lessons, the teacher or mentor could catch them. This would then lead to some form of punishment or a lecture about responsibility in the 'nico and will get caught fanfiction'.
Whether Will comforts Nico in fanfic can be quite unpredictable. It all comes down to the creativity and direction of the writer. Some fanfics might focus on building that kind of emotional connection, while others might take a different path.
Well, it's hard to say for sure. The story could go either way. Maybe Will has the motivation and ability to protect Nico, or there could be circumstances preventing it.
Yes, they might. In many fanfictions, the authors like to explore different relationships and bring characters together in unique ways. There could be a slow - burn build - up of their relationship, starting from friendship and evolving into something more romantic as the story progresses.
Often, Percy Jackson might be involved. Since he is a central character in the same universe as Nico, their paths could cross during Nico's time - traveling adventures. Percy could either be a helper or someone who needs Nico's help due to the changes in time.
In 'Hades Hurts Nico' fanfictions, Nico is often portrayed as a vulnerable character. He is shown to be dealing with the pain that Hades, his father, inflicts on him, whether it's emotional or sometimes even physical in some more extreme interpretations. This makes him seem more complex as he has to grapple with his family issues on top of his own identity as a demigod.