Era Restart: the Origin Sequence

On June 17, a news message popped up on Lu Chen's cell phone: A sophomore girl from the city's No. 3 Middle School fell to her death. The deceased Lu Wan - his sister's name, his sister's photo. He dialed Lu Wan's number. "Hello? Brother? I just finished class and was about to buy milk tea." She was alive. But the news is still there, the photo is still her, and the date is today. A death notification from the future is sent to the mobile phone of a person who is not yet dead. And Lu Chen knew something even more terrifying: the sky would shatter in six hours, the rules of the world would be rewritten, and most of the human race would die on the first night. Because he was reborn from death fifteen years after the end of the world. But when he arrived at the school, he found that the corridor had turned into a circle that could not be walked out, and the students in the classroom were forgetting who they were. Before the strange tide comes, the strange realm has already appeared. The memory of his past life was no longer reliable from the first moment.