Movie
Description
Nanjirō Echizen, first dubbed "Samurai Nanjirō" for his unmatched tennis skill, launched his tennis journey as a junior high student at Seishun Academy under Coach Sumire Ryūzaki. His early game revealed a significant backhand weakness, prompting him to create "Nitōryū" (Two Sword Style). This ambidextrous technique used forehand shots with both arms to overcome his reach limitation, forming the bedrock of his future dominance.

Relocating to the United States, Nanjirō turned professional, securing 37 consecutive international titles and nearing a complete Grand Slam. There, he met Rinko Takeuchi, defending her from harassment by his coach, George Smith. Their contentious beginning evolved into marriage after Nanjirō saved Rinko from an injury Smith caused during a tennis incident. He retired abruptly before his final Grand Slam match, forsaking his professional ambitions to raise and train his son, Ryoma Echizen, declaring that witnessing Ryoma play eclipsed any career triumph.

Nanjirō possesses hazel-brown eyes and sported short messy black-brown hair, favoring traditional monk attire, often appearing unkempt. During his competitive years in America, he grew it long, tying it into a high ponytail during serious matches. His personality blends eccentricity, flirtatiousness, and a perverse streak, often caught reading gravure magazines. Despite this, he shows profound familial devotion, especially to Ryoma, whom he critiques harshly to spur improvement, using "Mada Mada Dana" to provoke opponents—a variation of Ryoma's signature phrase.

His tennis abilities rank him among the series' most formidable players. Signature techniques include "Samurai Zone," manipulating ball spin to draw all returns to him, and "Muga no Kyōchi" (State of Self-Actualization), enabling replication of any observed technique. He mastered the "Pinnacle of Perfection" ("Ten'i Muhō no Kiwami"), playing purely for enjoyment, unburdened by competition. Superhuman strength and dexterity are evident in shots that shattered rackets and his effortless mastery of complex moves.

Beyond Ryoma, Nanjirō mentored others. He briefly adopted and trained Ryoga Echizen alongside Ryoma before Ryoga departed. In the *New Prince of Tennis*, he coaches Spain's U-17 World Cup team, applying his expertise internationally. His trickster mentorship involves unconventional methods, using psychological provocation to stimulate trainee growth.

Family dynamics add complexity. His marriage to Rinko originated from "Love at First Punch," her initial violent rejection transforming into mutual affection. He shares a complex bond with his niece, Nanako Meino, who manages the household and counters his antics with deadpan sarcasm. His central relationship remains with Ryoma, combining rigorous training with underlying support, aiming to mold his son into a player capable of surpassing his own legacy.