The human body was fascinating.
Very different kinds of things—blood vessels, cells, meat, blood, and bone—all mix together to create an incredibly complex system, seemingly conflicting with each other but truly supporting each other in a strange sense of harmony.
It was such a weirdly masterful thing. Mark would probably have to study it for months to figure it out completely, and for now, he didn't have that kind of time. The mega dungeon was expanding day by day and the humans were getting shaky in their seats.
The only thing Mark was relieved about was that if the Hunters decided to let the Angels come in, they would let the news know that in advance so as not to create panic in the general public.
Days began to pass.
Sitting still with a book explaining the human anatomy in his hand just wasn't Mark's stuff.
Thus, Mark's new kind of life began.