"Master, I know that he can be useful but he doesn't look like the type to be used as a tool."
The Quad-Spirit knew what its master was thinking but it warned him as Edward, despite being a mortal, is dangerous.
Arthur pondered for some time before turning to face the half-sleeping serial killer. The loud noise of chains caused Ed to lift his head for a second time, his black pupils gazing back at the devil standing a distance away.
"Is this what they call a devil? A fearsome appearance indeed."
As a human who lived most of his life on Earth, before it was subjected to the system and its magic, Edward wasn't that knowledgeable about those fantasy races and heard a couple of things in his long stay on the 12th floor. At first, he clearly glanced at Arthur but didn't say anything yet, this time, he took the initiative to talk.
"Be careful, master, he's very manipulative."
Arthur inwardly snorted and walked closer to the cell.