Maruo Eiichirō continues his training at STC as he tries to master every shot. At smaller tournaments he begins advancing to the third round but is unable to go further. His mother worries that Eiichirō is spending too much time on tennis when he drops out of cram school to practice more.

Eiichirō overhears Araya telling Takuma that if he loses to him this tournament, he will retire from tennis. His plan is to defeat Takuma and then announce he is going pro. Takuma agrees to tell Eiichirō Araya's weaknesses.

Araya and Eiichirō end up at deuce after neither player can gain an advantage. An ace end up being huge for Araya give him the match point advantage, and despite his best efforts a lucky bounce proves to be the end for Eiichirō as he loses 6-1, 6-4. The finals are held between Araya and Takuma.

In an effort to try and reverse the tide, Eiichirō decides to go back to his idea of having 100-squares to aim for instead of 9.

Eiichirō runs to watch Natsu's match when he learns she is in danger of losing. Afterwards they return to STC where he Ryuhei Aoi, a man who will become his new coach.

Eiichirō begins closing the gap on the others at the Florida Academy, but during everyone of his matches he has one moment where he presses too hard, costing him a set and eventually costing him the match.

Coach Aoi explains to Eiichirō that he stopped the match against Takuma because his body wasn't developed to serve like Takuma yet. If he had continued to serve that way, he would have injured himself and forced himself to give up his tennis career.

The Kanagawa Prefectural begins as Eiichirō faces off against Araya's new underclassman Nishimura. Araya has told Nishimura all of Eiichirō's weaknesses from the year before, making Nishimura very confident in his chances of winning.

The Kanto Junior Tennis Tournament begins at last, and Eiichiro is facing Yakabe Tadanori in his first match. Although he had watched videos of Yakabe's matches from a year ago, Eiichiro is bewildered by his opponent's much taller stature and completely different play style, and all the unexpected factors lead him to consider blanking all his mental data and starting from scratch.

Eiichiro is stunned by all the cheering Ide receives as their match begins. He struggles with the unpredictable plays of the intuitive Ide, but he recalls what he learned in his match with Natsu and concentrates on watching his opponent. Meanwhile, Ide also struggles to keep up with Eiichiro's constant changes in tempo and starts to tune out the world as he tries to focus.

Ide's remarkable ability to adapt instantly to everything has Eiichiro struggling, and reads his notes again to regain his focus. This improves his movements and leads to more impressive rallies, making the match even more exciting. Neither is willing to yield as the match comes down to which player can manage to hold serve...

The match against Takagi begins. Just as Yukichi warned, Takagi's style is unique.

The match has just begun and Eiichiro is already close to being in the zone. His excellent condition is reminiscent of his match against Ide; Eiichiro doesn't give Nabae a chance to fight back and soon takes the lead.