FAFO 9

As soon as the shield was completed, the two tree folks began absorbing mana from both the ocean and the atmosphere now that they didin’t have to worry about interference from anyone.

Initially, the process was subtle, but it was quickly detected by those with advanced mana sensitivity, and they immediately came up with a hypothesis behind this action.

“Looks like your magic system is designed for efficiency,” the humanoid remarked, still engaged in burning through Aron's shield. Despite their efforts, which had been ongoing for over seven minutes—a duration long enough to deplete the approximated amount of mana in the shields—Aron's shield remained intact. The humanoid could only conclude that the system’s efficiency was the reason for this anomaly.

They hadn't considered that Aron might have a mana tank within him, enabling him to use magic even in areas devoid of ambient mana. This was thanks to his previous encounters and rapid attacks that had only utilized the surrounding mana