Introduction: The quiet and introverted Ji Ran has an unknown hobby-fantasy. She has liked reading novels, romance, martial arts, cultivation, time travel, and any other subject since she was in elementary school, which led to her love of fantasy. At the same time, because of this reason, her grades were mediocre, and she was only admitted to a third-rate university. After graduating from university, she accomplished nothing. She was still immersed in fantasy all day long, imagining that she was like the heroine in the rebirth novel who returned to junior high school and became a top student. As a result, her life ended prematurely due to a battery drain on her cell phone. When Ji Ran opened his eyes again, he was shocked. His brother was a little kid, his parents were young, and his classmates were his former junior high school classmates. It turns out that the fantasy has come true, and I am really back in junior high school, but the feeling is completely different, everything has become novel...