This is not "travel" or "rebirth" in the traditional sense, but "parallel time and space information warfare." The protagonist's core golden finger is not to predict the future, but to randomly receive last-word information from his "peers" in the "destroying time and space" through a specific, high-computation encryption algorithm. This information is full of despair, regret and blood and tears, but for the protagonist of "this time and space", it is a priceless "future battle report". The core of the story is "how to single-handedly reverse the situation of the entire war through a few hell-mode distress signals." The price is that every time he receives information, he will see how miserable his "other time and space" is.
