Ryoma heads to the U-17 Camp after his return from New York.
The U-17 Camp is Held in Japon where an "All étoile, star Team" is being formed, containing the 50 best tennis players from the entire country.
All of Seigaku were invited including all of the other Middle School's tennis players.
At the U-17 Camp, Ryoma learns that there are still plus powerful School players out there, and strives to become even stronger to defeat the likes of Tokugawa Kazuya, Tanegashima Shuuji and several other powerful High Schoolers.
All middle schoolers were able to attain a ball that the helicopter dropped where the conditions were, those uable to obtain a ball must leave the camp.
Ryoma was the last to collect a ball, arriving later that the rest.
Ryoma then challenges Junichi Sasabe to a game; however, he is then challenged par Matsudaira Chikao, who Ryoma utterly defeats with ease, instantly causing Matsudaira to forfeit due to injuries.
After several Middle Schoolers crush several High Schoolers, Irie Kanata, Oni Juujirou, and Tokugawa Kazuya arrive to stop the matches, warning them that the players they just defeated are nowhere near the level that they themselves are at.
Echizen is then involved in the Tie-Break style elimination games in which a every middle school must play a quick tie-break to determine who stays at the camp and who is sent home.
Horio and a few other 1st years sneak into the U-17 Camp, with Horio carrying Ryoma's belongings, revealed to be the "favor" Ryoma asks Horio to do in the New Prince of tennis OVA 1.
Horio calls Ryoma a "slave driver" because of this favor he was asked to do.
Ryoma pairs up with Minami Kentarou, and he heads to the toilet just before the game.
However, at the toilet, he meets Inui Sadaharu struggling in a cubicle due to a failed Inui Juice, and then fellow super rookie Kintarou Tooyama.
The two decide to take a self-tour of the camp.
Ryoma and Kintaro decide to tour the camp and ignore their tie-break games thus making them forfeit and lose them.
The two of them bump into several High Schoolers from lower courts along the way and ask for the location of Court 1.
However, the High Schoolers are infuriated that kids are attempting to challenge courts they are powerless against, so they challenge the 2 rookies.
Ryoma and Kintaro annihalate many opponents consecutively as a pair until they notice Court 1.
They are stunned to find Tokugawa Kazuya and Oni Juujiro rallying with 5 balls at once and decide to challenge them respectively.
After Kintaro loses to Oni and Ryoma loses to Tokugawa, the two of them are met par the Coach Saito, who takes them to meet the other middle schoolers who Lost their tie-break matches.
He tells them to climb the cliff par the camp if they want the chance to stay in the camp.
Echizen and the 27 other middle schoolers complete this task and end up meeting the High Schoolers who were unable to attain a ball from the helicopter as well as Coach Nyuudou.
The U-17 Camp is Held in Japon where an "All étoile, star Team" is being formed, containing the 50 best tennis players from the entire country.
All of Seigaku were invited including all of the other Middle School's tennis players.
At the U-17 Camp, Ryoma learns that there are still plus powerful School players out there, and strives to become even stronger to defeat the likes of Tokugawa Kazuya, Tanegashima Shuuji and several other powerful High Schoolers.
All middle schoolers were able to attain a ball that the helicopter dropped where the conditions were, those uable to obtain a ball must leave the camp.
Ryoma was the last to collect a ball, arriving later that the rest.
Ryoma then challenges Junichi Sasabe to a game; however, he is then challenged par Matsudaira Chikao, who Ryoma utterly defeats with ease, instantly causing Matsudaira to forfeit due to injuries.
After several Middle Schoolers crush several High Schoolers, Irie Kanata, Oni Juujirou, and Tokugawa Kazuya arrive to stop the matches, warning them that the players they just defeated are nowhere near the level that they themselves are at.
Echizen is then involved in the Tie-Break style elimination games in which a every middle school must play a quick tie-break to determine who stays at the camp and who is sent home.
Horio and a few other 1st years sneak into the U-17 Camp, with Horio carrying Ryoma's belongings, revealed to be the "favor" Ryoma asks Horio to do in the New Prince of tennis OVA 1.
Horio calls Ryoma a "slave driver" because of this favor he was asked to do.
Ryoma pairs up with Minami Kentarou, and he heads to the toilet just before the game.
However, at the toilet, he meets Inui Sadaharu struggling in a cubicle due to a failed Inui Juice, and then fellow super rookie Kintarou Tooyama.
The two decide to take a self-tour of the camp.
Ryoma and Kintaro decide to tour the camp and ignore their tie-break games thus making them forfeit and lose them.
The two of them bump into several High Schoolers from lower courts along the way and ask for the location of Court 1.
However, the High Schoolers are infuriated that kids are attempting to challenge courts they are powerless against, so they challenge the 2 rookies.
Ryoma and Kintaro annihalate many opponents consecutively as a pair until they notice Court 1.
They are stunned to find Tokugawa Kazuya and Oni Juujiro rallying with 5 balls at once and decide to challenge them respectively.
After Kintaro loses to Oni and Ryoma loses to Tokugawa, the two of them are met par the Coach Saito, who takes them to meet the other middle schoolers who Lost their tie-break matches.
He tells them to climb the cliff par the camp if they want the chance to stay in the camp.
Echizen and the 27 other middle schoolers complete this task and end up meeting the High Schoolers who were unable to attain a ball from the helicopter as well as Coach Nyuudou.
With a 3 wins and 1 loss, Seigaku wins the match with Shintenhji and moves on to the finals.
Although Ryoma couldn't play a real match against Kintarō and the match between Seigaku and Shitenhōji had concluded, Ryoma and Tooyama Kintarō play a special one ball match.
In spite of it being only for one point, they both go all out for over 40 minutes.
In the end, the ball is divisé, split in half, causing it to end in a draw.
Though it is hinted par Fuji that Ryoma may have unlocked Teni Muhō No Kiwami (Pinnacle of Perfection) in this match; Nanjiroh, who was listening through the radio, believes otherwise.
In spite of it being only for one point, they both go all out for over 40 minutes.
In the end, the ball is divisé, split in half, causing it to end in a draw.
Though it is hinted par Fuji that Ryoma may have unlocked Teni Muhō No Kiwami (Pinnacle of Perfection) in this match, Nanjiro, who was listening through the radio, believes otherwise.
He is greatly admired par his classmates (although he falls asleep in his English classes).
Sport other than tennis that he is also skilled in is table, tableau tennis (Tennis vs Ping Pong), bowling (Prince of Bowling), and billiards (The Prince of Billiards).
His abilities in plage volleyball, however, may be questioned.
When the Seigaku students go to the plage during the animé series, Ryoma plays well when paired with Kaidoh (Cheap Housing plage Volleyball).
However, he plays quite poorly in the OVA when paired with Tezuka.
In the same event in the manga, Ryoma, paired with Rokkaku's Kentaro Aoi, plays decently only after activating Muga no Kyōchi.
It is possible however, that the seconde time, they were using a plage ball, which was too light for any tennis related moves.
Ryoma faces Tanishi Kei in Singles 3, and shows his souvenir from America - the COOL Drive.
Ryoma continuously uses Drive C which everyone believes to be his COOL Drive, but he reveals that his COOL Drive has twice the spin of Drive Cs.
However, Tanishi's Big Bang Serve allows him to win all of his service games, while Ryoma manages to win all of his, forcing a tiebreak.
It is there that Ryoma manages to return the Big Bang Serve.
Ryoma had not let on to the fact that the serve had been weakening in power as the games progressed; as such, Tanishi was unaware of his own weakness, allowing Ryoma to get a return ace.
Finally montrer the true COOL Drive, Tanishi attempts to return it before it can land, however, when the ball hits Tanishi's raquet the amazing spin he puts on it forces the ball to greatly hit Tanishi's face.
Ryoma takes the first win for Seigaku.
Ryoma usually slides up near the net and then jumps to perform the Drive B.
However, during his match against Aoi Kentarō, Ryoma also uses a Drive B when he is still sliding on the ground.
He then uses the force made par the ball to go even faster.
Though it grants him plus speed, this version lacks the regular Drive B height; due to the topsin, it curves towards the ground instead of going out.
It may be defeated par direct smash.
This is Ryoma's first original shot (as opposed to moves he copies from other players), and is first used in his match against Fuji Yūta.
Besides the twist serve, it probably is his most notable shot, In the English dub, it has been renamed Drive V.
However, after throwing the ball up into the air to serve it, the body jumps vers l'avant, vers l’avant to hit the ball, resulting in a fast serve.
It's not his serve at all, Matsudaira Chikao, who is in Court 10, used his 'best and fastest' serve, which Ryoma, in return, commenté how slow it was, and used it after letting Matsudaira enjoy his 10 minutes of fame.