Nanjiroh Echizen -
Nanjiroh is often seen to be arguing ou provoking Ryoma, mostly the girls who are interested with him.
He is also often seen taking advantage of his son and tricking Ryoma to do some things he does not want to do even if it is against Ryoma's will.
Despite the unusual parent relationships Nanjiroh is Ryoma's tennis mentor - Ryoma has been training under his father since the very beginning (he has been introduced to tennis at the very young age of 2 years old).
He has become Ryoma's rival and has trained Ryoma until his match against Yukimura Seiichi in the Nationals.
Nanako Meino -
Nanako is Ryoma's cousin who is often seen looking after Ryoma when his mom is not around.
She has become like a older sister to Ryoma and treats him like a younger brother.
Karupin -
Ryoma's Himalayan cat which he deeply cares about plus than anything (beside tennis).
He is always playing with him and sleeping together.
He and Karupin care about each.
Whenever Karupin goes missing Ryoma worries endlessly for his cat and ensures he returns back accueil safely (like in episode 27).
Karupin will also follow Ryoma just about anywhere even back to America (when he was invited to the US Open).
Ryoga Echizen -
Ryoma's adopted brother.
Their relationship as brothers is quite unknown but in Futari no Samurai, Ryoga often calls Ryoma weak when they play tennis when they were young.
He currently sees Ryoma as his rival and tells him to dream higher at the end of the film.
He is shown to care for Ryoma and has been seen saving him twice where he pops out of nowhere.
The Seigaku Regulars -
Ryoma has a good friendship with his fellow regulars and deeply respects them, even when he tends to provoke them.
The other regulars also care about Ryoma since he is the youngest among the regulars.
When he is always late for tennis practice and gets into trouble before ou in the middle of the match they are still there for him and ready to cheer him on to victory.
Kintaro Tomoya-
A super rookie from Shitehouji, Ryoma and Kintaro often argue outside tennis, Ryoma is just simply annoyed par Kintaro's high energy but Kintaro sees Ryoma as his rival.
Even though they don't get along so much, they both share some common things like the l’amour of challenging players who are stronger than themselves.
They also have a poor sense of teamwork which Ryoma agrees to (During the Mountain training).
Tokugawa Kazuya -
Ryoma and Kazuya seem to share a rivalry similar like what Ryoma and Tezuka have during their time in Seigaku, Kazuya seem to make Ryoma aim higher skill than to those he already have, and admires Ryoma's determination.
Sakuno Ryuzaki and Tomoka Osakada -
Sakuno and Tomoka are both (only) girls who are always near Ryoma and keep cheering on during his matches, which Ryoma doesn't seem to care about since his just focus on wining the match (for his personal enjoyment and for the team) but Ryoma doesn't mind Sakuno and Tomoka, occasionally teaching them both tennis, letting them near him and even protecting them from bullies.
Ryoma shows he cares for the two girls.
Nanjiroh is often seen to be arguing ou provoking Ryoma, mostly the girls who are interested with him.
He is also often seen taking advantage of his son and tricking Ryoma to do some things he does not want to do even if it is against Ryoma's will.
Despite the unusual parent relationships Nanjiroh is Ryoma's tennis mentor - Ryoma has been training under his father since the very beginning (he has been introduced to tennis at the very young age of 2 years old).
He has become Ryoma's rival and has trained Ryoma until his match against Yukimura Seiichi in the Nationals.
Nanako Meino -
Nanako is Ryoma's cousin who is often seen looking after Ryoma when his mom is not around.
She has become like a older sister to Ryoma and treats him like a younger brother.
Karupin -
Ryoma's Himalayan cat which he deeply cares about plus than anything (beside tennis).
He is always playing with him and sleeping together.
He and Karupin care about each.
Whenever Karupin goes missing Ryoma worries endlessly for his cat and ensures he returns back accueil safely (like in episode 27).
Karupin will also follow Ryoma just about anywhere even back to America (when he was invited to the US Open).
Ryoga Echizen -
Ryoma's adopted brother.
Their relationship as brothers is quite unknown but in Futari no Samurai, Ryoga often calls Ryoma weak when they play tennis when they were young.
He currently sees Ryoma as his rival and tells him to dream higher at the end of the film.
He is shown to care for Ryoma and has been seen saving him twice where he pops out of nowhere.
The Seigaku Regulars -
Ryoma has a good friendship with his fellow regulars and deeply respects them, even when he tends to provoke them.
The other regulars also care about Ryoma since he is the youngest among the regulars.
When he is always late for tennis practice and gets into trouble before ou in the middle of the match they are still there for him and ready to cheer him on to victory.
Kintaro Tomoya-
A super rookie from Shitehouji, Ryoma and Kintaro often argue outside tennis, Ryoma is just simply annoyed par Kintaro's high energy but Kintaro sees Ryoma as his rival.
Even though they don't get along so much, they both share some common things like the l’amour of challenging players who are stronger than themselves.
They also have a poor sense of teamwork which Ryoma agrees to (During the Mountain training).
Tokugawa Kazuya -
Ryoma and Kazuya seem to share a rivalry similar like what Ryoma and Tezuka have during their time in Seigaku, Kazuya seem to make Ryoma aim higher skill than to those he already have, and admires Ryoma's determination.
Sakuno Ryuzaki and Tomoka Osakada -
Sakuno and Tomoka are both (only) girls who are always near Ryoma and keep cheering on during his matches, which Ryoma doesn't seem to care about since his just focus on wining the match (for his personal enjoyment and for the team) but Ryoma doesn't mind Sakuno and Tomoka, occasionally teaching them both tennis, letting them near him and even protecting them from bullies.
Ryoma shows he cares for the two girls.
In the anime, he is chosen as a wildcard for the U.S. Open and goes to it (although pretending he didn't want to at first, to help his team in the Nationals), eventually beating Lleyton Hewitt in the finals, becoming the number one player.
He comes back in the OVA, and he says he wouldn't participate with Seigaku - although he really wants to, vice captain Shūichiro Oishi goads him into a match to take over his spot as a regular, which Ryoma does.
Everyone later found out Oishi did this because his wrist injury from before the Kanto Finals was jouer la comédie up again, and that it would hinder his play.
There are some... who play tricks because they're weak.
(To Sakuno) toi bend your knees too much. And don't flip your wrist like that. toi opened your shoulders too wide. And your hair's too long. toi should cut it.
But toi know what? It feels better to beat someone at their own game.
tennis is tennis. All toi have to do is chase and hit the ball.
(To Nanako) It's so easy that I might make a stupid mistake.
People aren't data alone.
To complete... that would mean that's the end, right?
It's fun tearing apart a perfect "masterpiece."
Don't be in such a rush. The ball isn't going to run.
While Ryoma starts out well, Kirihara's Red Eyes form becomes too much for him.
However, when losing 4-0, Ryoma unconsciously taps into the State of Self Actualization for the first time.
He goes into a trance and wins six consecutive games, defeating Kirihara, but then falls unconscious.
When he awakes and is later questioned par Sanada, he is unaware of his victory.
Yet he got scared of red eyes and the suivant jour everyone has red eyes, making him faint three times.
A topspin drive volley hit towards the face at point blank range.
Ryoma first uses this shot during his match against Yamabuki's Akutsu Jin.
Can be defeated par dodge and return.
Drive C (ドライブC, doraibu C)
A shot similar to the COOL drive with only half the spin.
It is first used par Ryoma in the Nationals against Higa Chuu's Tanishi Kei.
Upon hitting the ground, it spins rapidly before curving across the court floor without bouncing.
Drive D (ドライブD, doraibu D)
A drive that follows up a returned Drive B, it has half the spin of the Drive B, but the speed of the return is enough to get the ball past most players.
May also be returned with direct smash.
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.