Disclaimer/AN

Percy Jackson God of Earth, Time, Water, and Heroes.

Jason Grace God of Battle, Constellations, and Heroes.

Nico D'Angelo God of Darkness, Ghosts, Torment, and Heroes.

These three are the most powerful Gods of Olympus and were enjoying the peace after the first Gigante War when Apollo gives a new prophecy:

THE THREE BROTHERS OF OLYMPUS WILL NEED THE TITAN OF DEATH, DESTRUCTION AND CHAOS TO DEFEAT THE WAR TO COME. WILL OLYMPUS TO PERSERVED OR RAZED.
Can Gods and Titans coexist with each other and save the world of be the destruction of it.

Also parings:

Percy x ?

Jason x ?

Nico x ?

Titan of death, destruction and chaos(OC) x ?