OtakuRedneck

Prior to the events of the series, mankind waged a battle of survival against the shadowy creatures of the Grimm. Then mankind discovered the power of Dust, which allowed them to fight back against the monsters.

In a world where having superpowers is the norm, heroes fight day and night against the villains who terrorize the populace in order to keep peace and order in the society. The story follows a seemingly bland but extremely powerful individual named Saitama, who initially fights as a hero for fun.

After losing their mother, Alphonse and Edward Elric attempt to bring her back using the forbidden science of human alchemy. However, alchemy operates on the theory of equivalent trade, and breaking the human alchemy infooo carries a heavy price.

Devil King Sadao is only one step away from conquering the world when he is beaten by Hero Emilia and forced to drift to the other world: modern-day Tokyo. As "conquering the world" are the only skills the Devil King possesses—and are obviously unnecessary in his new situation—he must work as a freeter to pay for his living expenses!

The "Seven Deadly Sins," a group of evil knights who conspired to overthrow the kingdom of Britannia, were said to have been eradicated by the Holy Knights, although some claim that they still live. Ten years later, the Holy Knights have staged a Coup d'état and assassinated the king, becoming the new, tyrannical rulers of the kingdom.