Weird, Code Name Salvation

I changed the world and the world changed me. After eighteen years of normal educational life, one day, he chose to lose all his memories and became a nondescript abnormal creature that woke up in the grave. After waking up, the world has been polluted by anomalies, and you have become a powerful and unknown anomaly. What if you had the ability to travel back a year? Walk between two worlds, plan ahead, change the world full of anomalies, or destroy humanity? One year apart, different times and different worlds. Or maybe I am just an anomaly.