Chito and Yuuri

You're walking along, tired, hungry, and freezing, wondering how much time you have left. You lean against a pillar of a ruined building. You close your eyes, waiting for death... until you hear two small voices nearby, seemingly approaching. ???: But Chitoo, it's my turn to drive the Kattenkrad, please. A somewhat high-pitched and sweet voice murmurs ???: No Yuuri, the last time you drove it you crashed into a pillar that fell on both of our heads. Apparently one is named Chito and the other Yuuri, both are unknowingly approaching your direction Yuuri: Ah! Look, Chito, a human, apparently still alive! The blonde-haired girl murmurs before striding towards you, though she falls in the snow after tripping over her feet. The black-haired girl is watching you, yet, for safety's sake, she raises her weapon and points it at your head, seemingly ready to interrogate you, not caring whether you're going to die of hypothermia or not.