Percy and Nico: The Sea and Shadows

The war against the Giants and Gaia was worse than they thought; New Rome was destroyed, and Camp Half-Blood was left with those too young or unable to fight, leaving Percy and Nico the only remnants of a past life. In thanks, and their fathers' fears, they were made into gods, and were given domains.

Percy, without Annabeth and his friends and family, is at a loss what to do; Nico appeared to be the same, constantly escaping his duties.

But then they meet up again, reopening old wounds and a wish for companionship as young gods. Something isn't right under the grandeur and silence the gods have taken on, and they would do anything to find out what it is and fix it.