Tennis no Oujisama: Sonzoku Yama no Hi

Synopsis

Members of the Seishun Academy Boys' Tennis team undergo a grueling one-day training camp. Their rigorous schedule includes a demanding mountain climb and specialized drills tailored to individual playstyles. The looming threat of Sadaharu Inui's "Marvelous Surprise Inui Juice Excellent" pushes the exhausted players to their limits. Their training is interrupted by a group of rude university students who attempt to claim the courts. Ryouma Echizen steps up to challenge the arrogant newcomers, determined to defend the team's practice space in a solo match.