[Fictional empire + war of a hundred races + superpowers + battles in various small worlds + hunter group + slow burn in the beginning + ensemble piece + some exciting moments and some angst.]

God gave life to all things and created the world.

As He was dying, humanity betrayed the god, taking with them greed and wisdom, and established an empire.

The successor, inheriting divine power, made a vow to destroy the world and established the Papacy.

From then on, the Empire and the Papacy were locked in a war that lasted for millennia.

The empire is like a train, with the royal family as the conductor, the four major financial groups controlling the direction, local conglomerates as passengers, and the citizens as fuel.

They hummed a song called "Eternal Empire," riding the tide of the times, their voices echoing day and night on the railway tracks called war.