slaying the gods

after being screwed by the gods mike goes on a 50 year hunt to train to kill the gods he makes a deal with a devil selling his soul to gain power to kill the gods, after killing the gods the devil feared what he created and took every warrior from the humans, demons, and angels to slay one man the war was successful and he was killed. but he was reincarnated in a new world not knowing how sense he sold his soul but doesn't want to go through his past life again will he be able to live a simple life or will he have to slay the gods once again