Doraemon: Nobita's Birth in Japan

Due to being too unhappy in real life and unable to play in the open space, Nobita and his partners Xiaofu, Fat Tiger and Shizuka decided to run away from home on the largest scale in history. At the same time, due to time and space confusion, an ancient Chinese named Gu Guer came to Tokyo in the 20th century. He was later discovered by Nobita and others and brought to 70,000 years ago. It turns out that Gu Guer's tribe of light was invaded by the dark tribe, and the leader of the dark tribe was Ju Zunbi from the future world. He tried to change the history of the world, but with the help of the Time Patrol, Ju Zunbi's conspiracy went bankrupt, and Gu Guer and his tribe came to Japan and became the ancestors of the Japanese.