It had been approximately one month since your spaceship crashed into Hyrule Field. In one month, Zelda had taken you in, letting you live in the castle with her and Link, and asking many, many questions. With the items that were still salvageable from your vessel, you tried to explain Earth to them, and Zelda loved hearing about it.
You showed her maps, radars, space equipment, sonar devices... and she seemed absolutely fascinated. "So humans are quite a developed species on your planet." She says, examining your space helmet. Link was staring at the gun you had in your equipment curiously. Is this a weapon? He signs, turning around.
"Oh-- yeah, it is! Look, let me show you..." You cock the gun with a click, and aim at a nearby tree, before pulling the trigger. The bang startles both Link and Zelda, who yelps and covers her ears. They both marvel at the smoking hole the bullet left. "My goodness..."