Mu Xueyu became a professional tennis player at the age of 17. When she was 15, she learned the truth about the death of her twin brother, which was forced by her parents. She was determined to fulfill her brother's wish and become a professional tennis player. But she unconsciously traveled to the world of her brother's favorite comic "The Prince of Tennis". Faced with her parents' indifference, her brother's disgust towards her, and the love of all the princes, how should she choose? She wants to avenge the death of Yukimura Muxue. Yukimura Seiichi, please accept my revenge.