The Savior of Both Worlds Is Myself?

On this planet that is unknown how long it was born, there are two completely different worlds. One is the world where humans exist. They rely on the technology that they are proud of and believe that this planet is firmly under their control. On the other side, thousands of unknown races live among humans in various ways. The ancient blood flows in their bodies. As the two worlds gradually expand, whether they will eventually unify or perish depends on the most shining singularity in the two worlds... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.