Halo-Scrapped Princess Crossover

Prologue

The war was reaching its climax; the ancient humans were being pushed back to their home world by the Forerunners. The war had lasted a thousand years and casualties had been massive on both sides, as time went on the humans began to rely on even more desperate measures sending out technology that was sometimes still in the early stages of prototyping; but they had little choice. Eventually the Forerunners were able to push the humans back to earth and once realising that there was no way to redeem the once powerful race, they de-evolved them; trapping the humans on the earth forever.

Then the flood had arrived, the weakened Forerunners stood no chance against the parasites onslaught and like the humans before them had to rely on untested technology in order to survive as long as possible; weapons like the composer were sent out to gather troops for the forerunners to use in combat, one place that the composer approached was earth. The humans were terrified; they had never seen power like this before and although something seemed strangely similar about it they just couldn't place it.

Eventually the Forerunners were backed into a corner by the parasite, the once great race that sought to uphold the peace on the honour of the mantle of protection, began work on weapons of genocide on a galactic scale. Desperate to save at least some of the species in the galaxy, the Forerunners built shield worlds in order to protect them and it during this time that the Forerunners remembered the humans, the Forerunners decided that the humans were the perfect beings to withhold the mantle after they passed and so Earth was turned into a makeshift shield world, looked after by five guardians. The humans were to be nurtured so that by the time of their release they would be able to take the mantle from the Forerunners.

What the Forerunners were not expecting was betrayal, Mendicant Bias one of the Forerunners own creations turned against them; rewriting the orders for the guardians Mendicant lead them to Earth where they sealed themselves away. The Forerunners were horrified, Mendicant had lead the Flood to them and had taken the other guardians to Earth; with a heavy heart the Forerunners set of the Destructive Arrayed Matrix better known as Halo and were ejected from our realm of existence. And so with the threat of the Flood neutralized and the Forerunners ensuring their own destruction, Mendicant started his plans.