Atsuro almost froze at the threat. Something like that would be impossible, because he knew that death was not permanent for people like them. But on the other hand, if it's Naoya, he would just think of another method or find a loophole to secure his silence.

Even when Atsuro wasn't the type of person to spill his words. But his heart felt like it lightened up at Naoya's praise. His most promising student. He always brag about being the best to people, but to hear it from Naoya himself...

It means a lot to him.

"...Yeah, I understand. I promise I won't tell anyone unless you're okay with it."

He gave his word and now Atsuro knew, he personally sealed it. The one person who might get around it wasn't even here.