I became the source of angels

On the ancient continent, countless races fought each other in order to survive and become the gods who ruled the heavens and the earth.

The eagle-man boy Ulliel came to this continent from Earth, saw the chaotic scene of his people being oppressed, and decided to rebel against the nobles in the sky. On the path of bloodline evolution, he picked up the sword and built his throne step by step, leading his people to overcome countless hardships, and finally became the king of angels who countless beings in countless worlds must submit to

(the introduction is vague, please watch the text)