Story of Zero

Zero had his life ruined on Earth from invading monster before being killed by a delusional maniac. Upon waking up he finds himself talking to a goddess where she explains that the monsters were sent from another world using an artifact that that she had accidentally let into the wrong hands. She requests that he finds the artifact and destroys it, in exchange that she will give him a new life in the new world as one of the worlds strongest man. Follow Zero on his adventure to complete the goddess' request and explore the new world.