Kaoru Kaidoh

The Prince of Tennis manga and anime series has a large cast of fictional characters created by Takeshi Konomi; many have appeared in the musical and film adaptations. The cast of the series is largely made up of the members of the various tennis teams for the schools portrayed in the series, their coaches, and various family members and supporters.

The main character of the series is Ryoma Echizen, a 12-year-old tennis prodigy who joins the Seishun Academy tennis team. The main cast is rounded out with the other eight regular players for Seishun, all of whom have various special abilities at playing tennis. Beyond them, there are many rival schools whose players reappear during the course of the series.

The protagonists of the series all attend Seishun Academy (青春学園, Seishun Gakuen^?), or Seigaku (青学^?) for short. The school is famous for its talented tennis club in which the series' leading protagonist, Ryoma Echizen, is enrolled into the school by his father, Nanjiro Echizen, a former professional tennis player and Seigaku alumn. Although Seigaku has long been known for its tennis club, the void created by Nanjiro's departure years earlier throws the team into somewhat of a slump, leaving them unable to make it to Nationals over the next several years until a first year, Tezuka, joins the team. The story picks up two years later with Tezuka now a third year. The team slowly reforms, and Seigaku pulls off its first National victory with Ryoma's addition to the team.

Fuji is a third year student at Seishun Academy. The middle child of three, he has an older sister, Yumiko, who is very attractive and admired by his friends; his younger brother is Yuta, who was a student at Seigaku, but transferred to St. Rudolph. Fuji is a leap year baby, only getting to properly celebrate his birthday properly every 4 years. He is given the title "tensai", or genius, due to his tactical skill on the tennis court. Fuji's most famous moves are known as the Triple Counters: Higuma Ootoshi ("Bear Drop") for returning smashes; Tsubame Gaeshi ("Swallow Return") which runs on the ground without bouncing, effective against players at the baseline; and Hakugei ("White Whale"), a shot that uses the wind to hop straight into the air and return to Fuji on the bounce, effective against players at the net. During the nationals, he creates more effective versions of his Triple Counters; three more original counters to deal with complex spin shots, low spin shots, and net balls; and even masters how to play with his eyes closed. In addition, Fuji has an underhand serve that seems to disappear when the opponent is about to hit it. A running gag in the series is that Fuji has interest in or else near-immunity to strange foods and drinks that others would find revolting to the point of fainting. Should he ever pass out from consuming any of the strange concoctions Inui or other data tennis characters come up with, the item in question is deemed a true terror.

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Wikipedia