Leon had already expected that Darya would have little stamina, but the situation was even worse than he predicted. Since he had two work for fourteen hours straight and could sleep for six hours, she was forced to stop several times to rest in the sewers. However, resting in such places didn't help her that much since the air around was enough to make her face turn blue.
Unfortunately, since the 'soil of the city was only thirty meters deep, Leon couldn't use his mana. Otherwise, someone would notice his presence. Only after six hours of walking through the sewers, they left that place, and Leon created some earth platforms to rest. The smell of the sewers was left behind, but the stagnated air took its place, and Darya didn't feel all that much better.
"You were right... it is worse than I imagined." Darya said while looking toward all directions and seeing nothing but destruction and poison mist.