Yellow Sand, Immortality and Conquest

The old overlord, the former king, the eternal conqueror! The great Amon Thelamut I! His armies follow him to the end of the horizon, his empire is powerful, and his fame is world-shaking! And when he wakes up, his immortal legions will follow in his footsteps, making the whole world tremble... So what happens when he discovers that his former empire has fallen apart and his land is occupied by outsiders? All in all, this is a story about the confrontation between the ancient immortal monarch and the time traveler empire!