Idea #1
'The Crusades - End of Golem'(Working Title)
In the 22nd century, Humanity succeeded in creating "Magic Spells", an unlimited resource that can produce the five elements without any cost. The research of magic spells was categorized as "Magic Technology", and the new alchemic theory was dubbed "Magic".
Techniques like igniting fire at your fingertips, or moving objects without touching them were no longer a dream.
With the development of magic, the reformed United Nations placed a restriction on old world world technology, due to its detrimental effects on the environment, and globally forbade the possession of arms.
In its place, a new plan, one that would transform man into a more powerful entity, was set into motion: The Golem Project. For a while, the world saw peace as the number of wars between each nation decreased, thanks to the abundant resources provided by magic.
But there was no end to humanity's foolishness.
Countless disputes regarding concession agreements on magic cast a dark shadow over the project, and instead of its original goal, it created biological weapons, beasts that possessed stout bodies and an enormous supply of Mana. They were called Golems, named after the project that bore them.
They would eventually become the cause of a great war that would leave a century-long scar on human history: The Crusades.
The catalyst for the war was a Golem once originally docile to humans. During the development of Golems, it was the only one authorized to be complete, an ultimate weapon with an absolute power to command others of its kind. Without warning and without reason, it declared war against humanity, calling itself Providence, and took on its side all the Golems in existence. Thus began the crusades.
In the storyline, the Japanese are an 'endangered species'. This is mainly due to the fact that the research facility that was tasked with creating 'Providence' was located in Tokyo. The 'Garden', a space specifically for Golems to inhabitant when not currently in use, was also located there. When the uprising began, Japan was hit hard. Nearly everyone on the mainland was killed.
