On the Eternal Throne

Three thousand five hundred years ago, the Dragon Clan ruled this continent. A refiner extracted the "Source of Heart" from the ore, and since then humans have gained a long lifespan. They accumulated knowledge, power, and wealth, and eventually replaced the dragons. But the gift of immortality soon turned into a curse. The population expanded, resources depleted, and wars engulfed the entire world. The continent shattered into seven kingdoms, ruled by seven "Eternal Ones." They monopolized the source of all hearts and held the power firmly in their palms. The seal is the key to unlocking power. Only those who pay enough taxes are eligible. There are five types of seals: ears of wheat, hammer, six-pointed star, sword and crown. And above this, there are seven unique marks - symbols of the immortals, the gods who have ruled for fifteen hundred years. A person without a seal cannot survive a hundred years. They have no time to learn, no time to accumulate, no time to leave anything behind. They are called "the lost" and are not needed in this world. See how the protagonist starts from a small village, how he breaks the situation, how he overthrows the seven empires, and what does the length of life mean?