A genius whose potential had yet to blossom is diagnosed with an illness that means he can never play tennis. He can only satisfy his longing for the court by watching the anime Prince of Tennis. After transmigrating into the world of Prince of Tennis, he becomes Yukimura Seiichi's younger brother, Yukimura Takuya. Determined to protect his brother, he works hard to grow stronger, excelling in mind, body, and skill.