Responsibility

Luca's guilt was neck deep, and not only did he cause the egg-like bump on Xavier's head, but he also caused the red marks on Xavier's chest, which matched the friction burn he got on his face.

But Xavier said he was going to take responsibility, although for what, Luca couldn't tell. But he figured it was the right thing to do. He just wasn't sure how much it would cost to fix the egg if he also took responsibility.

Will he be okay with using a pill instead?

"Me too, I'll take responsibility," Luca said as he nailed himself on the cross. 

Two people were talking about different responsibilities but assumed they were on the same page.

Xavier really wanted to ask where they were and how they got here, but Luca looked like he would collapse or cry if he opened his mouth to ask.

So, he chose something safe.

"What happened to the arachnid?" He asked, trying to focus despite his headache.