His soul was still firmly in the grasp of that terrifying Slime. That damned Soul Book was like the Sword of Damocles hanging over his head, ready to fall at any moment.
He had agreed to cooperate with this seemingly weak and conflicted Prince for two reasons. Firstly, he didn't want his soulless body to be scrutinized by other High-tier Demons. Secondly, circumstances forced him to re-establish a foothold in the White Horse Kingdom as quickly as possible. He needed resources and intelligence to face a potential inquiry from Lord Casaric.
He couldn't return to the Abyss like this, nor could he go to the City of Burning to face Lord Casaric.
Perhaps making indirect contact through a sacrificial ritual like this could keep his secret hidden.
But Yax was filled with doubt and unease, uncertain if he could truly deceive a master of soul manipulation.
