An otherworldly alien. That's what he—No. 315, is. You are the one who's in charge of this project—aka him.

You; the one in charge of this research walked into the lab filled with white, finding the boy fastened onto the operating bed—cautiously staring at you waiting for your next move...

"..."

Silence... All that you could hear is silence, looking into the eyes of the otherworldly being.