"Oh, that..." Mireya waved her hand lightly, her face changed into a more complex one. "Association or Association of Eternity is an organization of three Races, excluding Devils. Their job is to keep the balance of the world stable and eliminate any threat."
Balance of the world. Tom found it strange how an organization did that without humanity knowing about its existence.
"You asked me how humans don't know about other races, right?" She noticed his confused face and nodded.
"In short, the Association used its magic and technology to cover the whole world, making other Races just look like humans. Of course, once they discover us, they will be able to see our true selves. But that's where the Association came in again. They can erase someone's memories using magic. Many Humans met Devils or Angels before and interacted with them in the past, but their memory of it was erased."
It was a surprising revelation. Tom's mouth opened and closed.
