[ How did it get there is the first question that Genos wants to ask- but he stops before saying it aloud, remembering where he had plenty of crashes with wooden objects. ]

It could be there since the school incident. [ Yes, the library ]

[ How could something wooden damage metal? Yeah, by getting inside the more delicate inner-workings underneath. He starts to close the casing slowly, having only one hand to work with, as he tries to formulate his thoughts. ]

I'm truly grateful for your assistance. If you ever need help with anything, please don't hesitate to tell me.