Traveling to the Future with the System, I Want to Rule the Entire Universe

After an unprecedented war, the earth finally came to the end of the road. By chance, I traveled to the future earth and obtained some kind of magical system. Kill the mysterious enemy, capture the heart of a beautiful woman from another world, and become the master of the universe. See how I can turn things around, save the earth, and rule the entire universe! ! ! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.