The protagonist Ryoma resolutely moved to the United States for self-training after winning the national competition in Japan. When he arrived in Los Angeles, Ryoma happened to meet his classmate Sakurano Ryuzaki who was harassed by street gangsters. In order to save Sakurano, Ryoma and the gangsters started a fierce tennis match. However, during the battle, Ryoma and Sakurano were accidentally involved in a rift in time and space. The two traveled back several decades and met Ryoma's father, who was called a "samurai" by everyone and had a bright future. Echizen Nanjiro, who was bright but retired quickly at the peak of his career; facing his father in a different time and space, Ryoma made up his mind to uncover the mystery behind his father's retirement. An adventure journey to pursue the truth is about to begin! This story is an original new work, combining fantasy adventure, sports competition, singing and dancing, creating a new chapter of "The Prince of Tennis"!