Full Metal Alchemist: Rebellion!

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Homunculus... Stories of immortal monsters told to us by our Grandparents... odd beings made by a "Father" 100 years ago.. Completely wiped out by a small group of alchemists and militia... Or so they thought... with one "Son" still alive, an Experiment of Father to recreate himself in the Flask, a New set of Homunculus have been born and Now the Rebellion has Begun.
Now, there is a strange green shard that everyone has been finding. Its been said that if you merge them, it would enhance the power of any alchemist by 100 fold.
The stone was given the name of the Seal of Suitai known as the Seal of Oblivion.
The Seal of suitai was revealed to be the harvest and embodiment of ALL the Souls that remained floating after the philosopher's stone was created from their bodies.
This unusual green stone when combined with the power of the philosopher's stone inside of a homunculus Granted said homunculus to (for a short time) use alchemy.
This is how this "Son" came to be. A large piece of Suitai was fused with the philosophers stone...It's his goal to take over again. Citizens have since begun to rebel and find the remaining shards on their own. This has caused many to turn against the military more than before in an attempt to take the few shard that they are holding safely away from the world.