Part 1

Doesn't follow the storyline, like, at all. Slight Trials of Apollo spoiler.
Nico, Percy, and Thalia are sent to Hogwarts, they show up at Number 12 Grimmauld Place and meet part of the order. They head to Hogwarts with the very suspicious Golden Trio. Nico must face an old friend, Tom Riddle, only now, Tom is dead, all that's left is Voldemort. Nico is starting to doubt that he has what it takes to kill one of his best friends.

Yeah, pretty vanilla but I just wanted to write one. I don't really care if you like it, so.
(Also posted on Ao3)