I am the Demon king, but why do the Goddesses favor me?

The world calls for heroes, and in dire situations, they tend to rely on anything just to escape death and live. The story begins when a boy from another world becomes one of the three heroes of fate. His strength prospers among the other two, fate favors him, but the people do not. After saving the entire continent from the Demon God, they feared his strength and banished him from any human land with no where to go he thought of nothing but to suffer. But there are still beings who cared enough to give his life a new light. [ You are never Forgotten ]