Shin Tennis no Oujisama vs. Genius 10

The Foreign Expedition Team returns to Japan's U-17 camp after a month away, bringing 20 players whose skill clearly exceeds most of those already training there. The coaches announce that only 20 of the best will continue, but the first selection excludes the middle schoolers entirely. Rather than accept it, Ryouma and the others challenge the players ranked 11th through 20 and try to steal their places.

Once those battles are settled, the Genius 10 finally appear, revealing the camp's true strongest players. Beating ordinary high school opponents is no longer enough; every match against them exposes another level of tennis and forces Ryouma and his rivals beyond what they thought were their limits.