The premise couldn’t be simpler: two girls on a bike in a world of nothing. They are, as far as they know, the only living souls left in that world; the rest is in darkness and ruins. Yuuri and Chito are their names. The more serious, reserved Chito drives the Kettenkrad half-track motorcycle; the more Yuuri rides along and carries a rifle.
Ever since they were thrust out of their home (which looked on the verge of falling to an unknown enemy force), they’ve had no direction except towards fuel and food; no directive except survival. And somehow, for an unknown period of time, they have managed to survive.
Their stomachs are always growling. They’re often cold, though warmer when huddled together. Food is never plentiful. They’ve been meandering through the darkness of a vast system of underground spaces for so long, that when they finally find themselves back outside, they’re blinded…by the starry sky, full of shooting stars.
They also behold a sprawling landscape of ruined, snow-covered civilization. These are kids, and they mess around and get on each others’ nerves, even as they work together to survive. They seem almost blind to the destruction and have perhaps compartmentalized the fact the two of them are all they have and possibly all they’ll ever have.
Things get a bit testy when they find a chest full of chocolate-covered ration biscuits that come five to a pack. Yuuri, the one with the rifle, unexpectedly turns that rifle on the unarmed-by-choice Chito, taking the fifth biscuit for herself. Even though they escaped and survived a larger war, the war to stay alive wages between the two of them, and one day one biscuit may make all the difference.
Chito is pissed, beating Yuuri up as punishment, and Yuuri seems to laugh off the incident, but it sure didn’t seem like a silly joke at the time. It seemed like a petty thing to do when they had a whole box of biscuits, especially considering a warm Chito to drive the bike and sleep beside (rather than a cold corpse) is surely more important to survival as the difference between three biscuits and two and a half.