Karl used [Earth Manipulation] to clear the tunnel and rebuild the damaged wall sections where Oathbreaker had detonated an explosive skill under a crab, and led the way through the tunnels.
With the lights back on, it was easy to tell how bad of shape the tunnel was in, so he continued reinforcing the walls as they went.
It was made of the same concrete as the Golden Dragon Nation's military bunkers, but that had only kept it marginally intact after the attacks.
However, the sections closer to the bunkers were deeper so that the students had somewhere to escape to in the event of a gas attack, as the toxins would either rise or settle.
"The first few bunkers are down here. There is a central hub leading to classrooms on much lower levels." Johann explained.
Karl listened for movement, and then nodded. "Nobody seems to be in the classrooms, unless they're soundproofed. I hear people in the other tunnels."
"Your ears are that good?"
