When Aldis and his party members first arrived at Nega forest, Raphael had made mention that he could feel an oddity in the forest which could probably be a treasure, a powerful treasure at that, which could lead Aldis to the undefiable greatness which he always craved.
Aldis not wanting anyone to have an idea of him possessing such a great treasure had quickly sent Raphael away in the guise of trailing their targets, then.
Honestly, Aldis had long stopped giving a damn about the said target. All he wanted was to lay his hand on the treasure and everything was going smoothly as he planned.
He would have access to unarguable power, crushing those little vice leaders underneath his feet with utter defiance.
He even made it seem as though he was truly tired of searching this place whenever the guild leader contacted him to not raise suspicion, as he wanted to hid it away from the guild leader too.