[Brook doesn't startle, or at least not much. Kaveh gets a doubtful look, but whether it's for his appearing or his appearance--though Brook has no room to judge, his first trip through the haunted house was as a magical girl--remains unclear. He's not afraid, at least. Even small and unarmed, he doesn't flinch.]

I... uh. [He frowns, apparently unsure how to answer the question.] I didn't lose it, but I found it again, I guess? It's not mine.

[Even so, he holds it protectively close to him.]

It's a friend's. I found it taped under a desk last time, too. That's why I thought to look.