After the National Middle School Tennis Tournament concludes, 12‑year‑old prodigy Ryouma Echizen travels to the United States to hone his game. While carving out a path of his own, he probes the puzzling reason for his father"s sudden exit from professional tennis.
Referred to as "Samurai Nanjiro," Ryouma"s father was a celebrated player whose career stopped abruptly following the US Open final years ago. Ryouma has dissected that decisive match in depth, yet many questions remain—questions he can only answer by witnessing the event firsthand.
Fortune intervenes when a supernatural twist sends Ryouma and his unsuspecting classmate, Sakuno Ryuzaki, back to that very moment. The days leading up to the match appear ordinary at first, but the sudden appearance of organized crime forces Ryouma to confront a deeper mystery surrounding his father"s retirement. With slim chances, he must uncover the truth and try to keep his father"s legacy intact.
