B9C1

It was Pyrrha, I realised as I came close. She was working alongside Nora and under Weiss' supervision to lower a wooden pole down into a hole dug into the ground, while Yang and Ren held a wider plank horizontally, upon which the spiked one would rest and be propped up. They saw my approach and smiled weakly but didn't stop.

[...]

Of Blake and Ruby, there was no sign. I could only imagine their Classes weren't suited to the work, Ruby especially. I wondered why Weiss was for a moment, then understood as she used a fire spell to burn the spiked tips, turning them black. They would be hardened that way as the moisture burned away. It would be more durable when the Grimm crashed into them.