[A certain thief also happens to be browsing said library, notably not looking up at the ceiling where a clear shot of the ocean (and all of it's lovely swimming creatures) can be seen. At least by this point he's learned to ignore it.
He spots Haibara from afar, quirking an eyebrow at the hefty book selection, but noting that now wouldn't be a bad opportunity to speak with the small girl from his world a bit further.
So with his own books tucked underneath his arm (more detective novels, unfortunately, as much as he prefers other things they're about he only interesting thing he's found in this library so far) he carefully slides up next to her with a friendly greeting]
Interesting selection. You must be fairly ahead of your class as far as reading is concerned.