Responses
So true. Even Satan over here probably thinking he’d make a great demon/minion since he thinks so lightly of murder. It’s not even let’s make sure to kill bad people or those that aren’t missed…it’s all purely for the young master’s health. He’s interesting like you said but even being a doctor or man of science, prescribing murder is odd, I would start think supernatural things were at play. Then again I guess our little devil would find that he’s no longer a useful pawn if he knew too much. ╮( ̄▽ ̄)╭

And I thought Adrian's occasional creepy moments of bloodthirst carried the manhwa, but Dr. Hubert's madness is of a whole other level (but I like him, an interesting support character).
Who said only demons are dangerous?? The humans here are not falling behind