
Eiichirō Maruo (nicknamed "Ei-chan" for his grades being straight "A") is an honor student, bookworm, and is not interested in anything other than studying. In order to solve his problem of lacking physical strength, he enrolled a tennis school and soon found the fascinating side of tennis. Being a tennis newbie lacking physical strength, he supplement his shortcomings with his excellent observing and analyzing skills.

Maruo Eiichiro is an honor student in his first year of high school. He's a very methodical person who keeps two sets of notes for class and focuses entirely on his studies. One day, Eiichiro decides to participate in a free trial at South Tennis Club (STC) because he needs some exercise. There, he meets school idol and sweetheart Takasaki Natsu. Eiichiro has taken his first step into the world of tennis

Eiichiro is unable to answer Natsu when she asks him what he enjoys doing most. He becomes interested in tennis and returns to STC for another free trial.

Eiichiro is unable to forget how good it felt when he successfully returned Takuma's serve, and he spends all of his time practicing against the wall. After seeing Eiichiro practice against the wall non-stop for six hours on a Sunday, Natsu predicts that he will quickly improve.

Eiichiro finds himself in a contest with Takuma. Eiichiro has fifty tries to return Takuma's serve. One successful return and Eiichiro wins. However, despite Eiichiro's best attempts to follow his notes and stick to the basics, he can do nothing against one of the strongest serves in the country.

Eiichirō is about to play his first match. He receives advice from the other STC members, but it only makes him more nervous. He doesn't get a chance to calm himself down as he's soon called to the tennis court.

It is down to the final match of the set. Eiichirō trails 5 games to 1, but with a determination to stay on the court as long as possible Eiichirō begins to push Oobayashi.

In order to improve Eiichirō's playing, Coach Miura has him learn control on a 9-square court. After getting the basics done, Eiichirō is forced into a match against Takuma.

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 returns to the Kanagawa Junior Circuit. His first match is up against fellow high school student Koshimizu Nariyuki, a man whom is always trying to compete with Eiichirō for the top scores.

The match between Eiichirō and Miyagawa begins with each holding serve. However Eiichirō feels that something is off. After studying his notes, Eiichirō realizes that Miyagawa has been studying his shots, and with a 4-3 lead he plans on making his move in the eighth game.
Available on: NHK Educational TV