The Self-Cultivation of the Amnesiac Hero

Have I traveled through time? Have I lost my memory? No matter how much I think about it, I can't remember it. It's like my memory has been torn apart and every possibility has been restored. The system has given me nothing but a panel and identification. Mission system? There is no such thing as a good attack. This appraisal is still good and bad. The demons are now ready to take action. The demon king has killed the brave man. The probability that the human race can win is basically zero. In order to survive, what should I do... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.