fullmetal alchemist envy crossover fanfiction

Alchemy is the science of understanding, decomposing and recomposing matter. However, it is not an omnipotent technique, because it is not possible to create something from nothing, if you want to obtain something, you have to pay an equivalent price. In nature, nothing is created, nothing is lost, everything is transformed. But there are beings that are beyond our comprehension, who had all the power, and what if this being made a mistake? Follow Icarus, who reincarnates in the world of Fullmetal Alchemist a few years before the main plot, how will he escape from "father's" clutches, dodge the army's plots, while trying to keep control over his life, will he use the information to help people or himself? In a world where fiction becomes real, amidst science, politics, war and religion, a new piece will be placed on this board, but... which side will he be on? /...................(I am Brazilian, so obviously my main language is not english, I am using a translator. there will probably be spelling mistakes, but I hope you enjoy the story.)