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One sunny noon, a high school student went out to play with his friend. A car lost control and hit them. When it was about to hit them both, the high school student pushed his friend away. Then, his friend died, but the high school student did not die, because the car suddenly turned sharply and disappeared like that? No one can continue watching. Audiences here, yes, I said it right, and you read it right, his friend died, but the high school student didn't die, because I didn't follow the routine, haha, uh-huh, uh-huh, uh, I'm not funny anymore. Then, the high school student cried bitterly. After his friend died, he came to a grassland, and then, um, read the text...

A planet that is similar to reality. The planet is also called Earth and the technology is similar, but their society is still stuck in the slavery of ancient times. At a large auction, a cage covered with cloth was brought to the scene. When it was opened, a boy of thirteen or fourteen years old was locked in the cage. Later, the bidding finally ended up being bought by a girl about his age. The girl was a princess of the kingdom. He wanted him to be his bodyguard to protect her in school and give him his freedom after graduation. The boy agreed, and their campus life began...