Hero Call Error

Facing the evil race that is eyeing outside the dimensional rift, the call to the brave is humanity's last trump card. Every brave man will bring new technology and revolution, but this time there was a mistake in calling the brave man! I was in the wrong body and didn't belong to any camp. This body actually had three souls. It made an agreement with me. For myself and the people I cherish, becoming stronger is my only choice. But later I discovered that a person's strength may not affect his own destiny, so what I need is... To integrate the whole world. A real adventure into a different world, the beginning of changing the world.