Noma looked at Eiro, staring at him in disbelief. Clearly, he was overwhelmed by this unexpected revelation given to him. Eiro could hear Noma's heart beating so loud that even he was scared that it was about to jump out of his chest. Trying to calm himself down, the young man grasped his shirt tightly while trying to hold back his tears.
Since it wasn't a good idea to just watch this kid cry like this, the Demon chose to instead turn Noma's pure relief into something more useful – trust toward Eiro.
"To begin with... if you think this magic is evil, why do you keep studying it so intensely? You seem rather kind to me, at least."