p5. "When you have to use a gun, keep that in mind."
When would a kindergartener have to use a gun? Even more confusing, he's talking about a police gun.
Theory 1: Her brother's a timetraveller who knew she would need that advice in the skyscraper world, and knew she could remember it somehow.
Theory 2: Writer-kun is as inept as his schizo dialogue, and bipolar character development suggests.