"Cough. Cough. Cough."
Eren began coughing uncontrollably as soon as he finished harvesting the souls of the recently deceased beings. He felt feverish, and his eyes turned red, blurring his vision.
His limbs felt powerless, and his heartbeats were erratic. He didn't believe there was anything wrong with him. However, he instinctively felt as if his current body was restrictive.
He felt like an endless sea confined within a jar of water, as if the container that was his body was increasingly becoming incapable of containing his divine soul.
"What… What is happening to me?"
Eren asked Alephee in a low voice as he tried to control his mana circuits from going haywire. He also sensed that his mana core would burst if he didn't employ his Ranking Technique to quell the outpour of mana that was being absorbed into his mana core like a bottomless pit.