//This was the ultimate result of a plot bunny, a recent Stellaris binge, and my creative gears finally starting up again.
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It is the year 21XX.
After centuries of gazing at the stars and wondering about the secrets of the universe, Humanity is now on the cusp of becoming an interstellar power. Citizens around the now united Earth rejoice as the first interstellar Colony ship makes the final preparations for its maiden voyage.
Another race was closely watching the celebrations as well: An ancient and enigmatic race that had been subtly influencing Humanity's destiny since the advent of the Stone Age. These were the Incubators, and they generally operated in the shadows, forming peculiar contracts with young girls in order to perpetuate a cycle of hope and despair that existed solely to extend the life of the universe. To them this was a necessary process, and one that the majority of humanity was unaware of, and of those who are, only a small fraction knew the true nature of it.
This cycle…
[] Is the same as it's always been since the Incubators engineered it. Magical Girls, the seeds of Hope, are merely the larvae of creatures of Despair. The metamorphosis into and harvesting of which provides the energy necessary to prolong the universe's lifespan. (A universe where, for whatever reason, the events that lead to the creation of the Law of Cycles never happen.)
[] Is unchanged, as the events that would alter its destiny have, by some twist of fate, yet to occur… (Timeshifted universe. The canon PMMM events occur during the quest's time period, on your first colony, rather than the canon time period.)
[] Is an enigma even to the Incubators themselves. While the Incubators developed the Magical Girl system, it seems to operate on some kind of universal constant or law that they struggle to fully understand. Instead of a metamorphosis creating a cycle of Hope and Despair, a Magical Girl at the end of their lifespan simply fades into the aether… (Wraiths replace Witches under normal circumstances. The Law of Cycles exists.)
Humanity is not the first species that the Incubators have used in this manner, nor will it be the last, but sapient species with human's emotional capacity and karmic potential were uncommon in the galaxy, and therefore it was in the Incubators' best interest to maintain their hold on humanity until the cycle perpetuated enough to fill their quota.
Therefore, that is why, with humanity ready to reach for the stars, the Incubators were prepared to follow…
As the colony ship, the UES Mitakihara, makes its final system checks. Its crew, and humanity as a whole thinks back on what made this historic moment possible...
[] Humanity's rapid advancement was honestly a miracle. As if engineers and physicists around the world had a sudden simultaneous epiphany. The truth of the matter, however, is that this was the result of the wishes of one or more girls, though only time will tell what the negative consequences of this will be, if any...
[] Humanity's rise, as was their uplifting from the stone age, was facilitated by the Incubators themselves. It was determined that humans, as advantageous of an energy source as they were, were flawed by being limited to one planet. If one human world could perpetuate the cycle to sustain the universe for several million years, one can only imagine what the population of several human planets would do to stave off the inevitable heat death...
[] Somehow, Humanity's rise was completely natural. Operating under its own power, humanity achieved the ability to travel to the stars independently of the consequences of wishes and the subtle prodding of an extraterrestrial species.
With all other systems in the green, the captain of the Mitakihara orders one final test of the ship's FTL drive. A complex piece of engineering designed to interact with…
[] A network of mysterious channels that connect several star systems in a weblike pattern. These so-called "hyperlanes" turn what would normally take years of travel into mere days… (Stellaris style FTL. No galaxy-wide effect. Everything has an equal weight for appearing.)
[] A mysterious device found within the distant moon of Charon, powered by an element that was previously unknown to science until early Mars colonization efforts unearthed some ancient ruins. (Mass Relays. Citadel races guaranteed to appear. The Reapers exist. Prothean ruins can be discovered.)
[] An immaterial plane "beneath" the main universe. It is an unstable and hazardous place, but with the proper shielding a ship could use it to travel between two points in the material universe far faster than it would take to get there normally. (Warp Drives. The Chaos Gods exist. Greater chance of encountering 40k races.)
Sending a final transmission to Earth and receiving an all-clear, Mitakihara's mighty engines burst to life and the future of humanity commences its departure from the Sol system and enters the final frontier.
But, as humanity will soon learn, space is a mysterious place, filled with marvelous wonders and great untold horrors. However, with the hidden world of Magical Girls on their side, perhaps they would have a safer time facing whatever lurks in the dark…
The captain of the Mitakihara was well aware of this, and as the future leader of the soon-to-be colony, they mentally prepared themselves for whatever trials may lie ahead…
You are this captain, and you are...
[] A true rarity: A Magical Girl that has lived to adulthood. (Proceed to Magical Girl character creation. Leader cannot die of aging but can be killed through combat or Soul Gem corruption. Natural bonus to Martial.)
[] What anyone would expect. An ordinary human. (Proceed to Human character creation. Finite lifespan, but otherwise lacks the drawbacks of the other options. However, it gains neither side's advantages either.)
[] An Artificial Intelligence. Designed to perform administrative tasks until a proper leader is elected following colony establishment. (Proceed to AI character creation. Immortal unless systems are damaged. Vulnerable to reprogramming. Natural bonus to Learning. Minor malus to Diplomacy.)