Invincible at the Start of Rebirth

The male protagonist was unfortunately injured and died while watching foreign invaders in the future. He returned to 20 years ago and unexpectedly received a thousand-fold improvement in the mission system, thus starting a plot of cutting melons, slicing vegetables, and closing the harem. In the follow-up, there will be four galactic priests starting from the earth. The system of other subsequent male protagonists will be adjusted to a certain extent... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.