What would happen if history was not fixed, but was "updated" and "corrected" every day, like software versions?
In this world, the "Correction Bureau" under the United Nations uses a time machine to constantly fine-tune past events to optimize present society (such as erasing Hitler and preventing Chernobyl). The memory of all mankind will be automatically updated accordingly, without any sense of violation.
However, the protagonist Shen Shen accidentally cut off synchronization with the "Global Memory Cloud" due to a piece of shrapnel implanted in his brain that was not removed. He became the only person in the world with an "old version of his memory." He watched helplessly as his wife, who was by his side yesterday, became a stranger who had never existed today; the bustling streets yesterday turned into ruins today!
Your attention is the motivation for my writing.