Nico di Angelo and the avengers(angst)

Hi! This is one of my first stories so please don't hate because it's going to suck, a quick summary, everyone is dead. Nico's depressed, Steve is clear sighted, and there are two secret legacies on the avengers team. So when Loki threatens the graveyard where Nico's loved ones were buried, he jumps into battle. But something is off, Loki seems to be different than most gods... so what happens when fury thinks Nico can become a threat and he places him with the avengers?