Seeing that I was becoming serious, the duke also revealed a serious look and said, "We have him in our dungeons and we have stabilized his conditions, though it was hard since it was our first time treating a demon."
The demons had different body structures from humans, so it had been hard for the duke's private doctors to treat their demon prisoner.
It could even be considered a miracle that he survived at all.
But since they had treated him, the demon had remained silent.
The demon had been conscious, but he had completely withdrawn into his mind and didn't react no matter what anyone said to him.
The duke had tried using his interrogators to get some information from the demon, but he wasn't able to get anything out of him.
But it would be different for Shadow Garden since this was what they specialized in in the first place.