Gu Cheng, who traveled to the world of Prince of Tennis, was reborn back to his original world on the eve of the national competition, back to his first year of high school. Living again, he just wanted to enjoy this youth full of beauty and longing. But... why did I pick up the racket again! However, playing in this world without any Prince of Tennis skills, it is indeed a bit cool to suppress an era. My name is Gu Cheng, a person who was affectionately called the Demon King by everyone many years later, a person who can make his opponent retire with his racket when standing on the court, a pure tennis enthusiast. ...Everyone: "No, Brother Cheng, that's anime special effects! It's special effects! Do you understand?" Gu Cheng nodded seriously: "I understand, but I don't know why I can play it out, and I am also very troubled! Why don't I retire after I win the Grand Slam!" Professional...