The First Ruler.

"To be sent off as the only spy and kickstart an entire invasion, it's obvious he is a big shot up there." Felix nodded with a serious expression.

Since the spirit realm was sealed for the eternal kingdom's spirits, it meant that Duke Humphrey was sent off to the living world and allowed himself to die or turn into a spirit somehow.

Felix didn't know how exactly Duke Humphrey pulled off the infiltration without losing his memories, but to reach this far, he was a true mastermind.

"Who is this strongest being exactly?" Felix narrowed his eyes. "Is he one of the beings who imprisoned you?"

Asna felt a profound weight in her heart...The thought of that being brought her bad memories and if it was up to her, she would never speak about him.

"You don't need to tell me if you..."