Adall's system had an inviolable fundamental principle.
He could only obtain purified core fragments from those whose lives he literally took. This meant that if he faced an opponent in a group, he had to be the one delivering the final blow to be able to obtain a purified core fragment from the endeavor. This was the answer he obtained from one of his many experiments while playing the role of Gobgrim, the goblin patrolman.
Adall, becoming invisible on this battlefield, had only one objective: to play the role of support. Then, like a deadly breeze, he began to weave through the battlefield using the movement technique, the steps of the celestial shadow.