Alephee knew what Eren was thinking mid-battle.
She hmphed before continuing.
'You don't need to know about ways to improve in other sections of the spell manifestation, Eren. Your obsessive-compulsive mind would do you more harm than good if you tried to do everything at once.
One needs to learn to control their mana flow first before one could think about other sections of spell manifestation. It paves the way for the rest. Also, it is the safest way to tweak your spells. Let's say other ways carry some risks."
Eren raised his eyebrows when Alephee criticized his behavior. He tried to counter her words using various thoughts that had sprung into his head. But ultimately, he closed his mouth and sighed, almost becoming loyal to his fault.
'Fine. But what is Ertaur doing right now? He wasn't the one who cast that shield. So how can he interfere in the mana flow of the defensive spell cast by someone else?'
