Breaking the Gods

Nico infiltrates a boarding school that's been conducting experiments on demigods, and discovers a plot far more twisted than anything he ever expected. Cut off from Percy and Camp Halfblood, as well as Anubis and the Kanes as they struggle in their fight against Apophis, Nico must turn to a new ally, the Roman demigod Jason Grace, if he has any hope of surviving.

!!! This isn't mine, it's Asilda's on Fanfiction