The sound of the little fireworks going off is enough to catch Firo's attention and bring him meandering into the area. He stops a few paces away to watch the battle with the chest, very nearly moving to jump in when it looks like the thing's about to gobble him up. He holds back when the poor guy manages to free himself--maybe he'll do all right.

"...You know, for a minute there, I thought you almost had that thing."