He Is the King of Nets and Gets Gongsun Li at the Beginning.

Travel to the world of tennis kings and obtain the king system. From then on, there is a tennis god in the world! Atobe Keigo: "We are obviously the same age, why is his speed so terrifying?" Yukimura Seiichi: "I didn't expect that besides me, there are people in the junior high school who are good at mental skills." Echizen Ryoma: "Technology, strength, speed, endurance... Each one is so strong that it makes people despair. He is simply a monster among monsters!" This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.