this world is a human inhabited moon in the andromeda galaxy. it is in many ways similar to earth, in many more distinct and unique.
earth, the first planet of terrans was destroyed in a series of nuclear wars and an alien attack over the span of 5 years. the lonely pioneer ships sent out to andromeda were on a mission to ensure the survival of the human race.
that was 156 years ago, and the new colony is thriving. it's made incredible advancements in medicine, technology, lifestyle and culture.
Juna is a bit smaller than earth, and it's planetary system is so unlike earth. it's planet is unfortunately inhabited.
alien life was new to terrans, and they unleashed what on the old world would be called, the evils of pandoras box.