"Nina, how do they activate abilities if they don't use mana circuits?"
Eren asked while smoking his Sativa stick. He made a mental note to get an ashtray because Nina was giving him the stares for occasionally dropping the ash on the table.
"There is no specific way to activate the abilities, Erni. the activation either gets imprinted on your consciousness or you define them on your own."
Eren raised his eyebrows when he heard that. He didn't understand what Nina meant by defining the ability's activation. So Nina expounded further:
"I don't know why you are asking about abilities when you are only E-Rank, Erni. I suggest you don't focus on these things as they would waste your time. There are some lunatic rankers out there who actively pursue these things and neglect their ranking practices.