Still not impressed. The whole premise and all the characters and their motivations feel very forced. Also, am I the only one wondering what is wrong with these kids for their response to the entire human race dying is 'yeah, we'll just repopulate the earth, whatever'? Don't the have families? No crying? No exasperation? The characters don't seem to have a shred of humanity! Everyone's dead for god sake, let that sink in a little! Really takes you out of the story that they brush all the emotion over like this, makes the characters feel like they are made of cardboard.
Will drop next chapter if it doesn't vastly improve.