14 (The Prince of Tennis)
1.5 (both eyes)
Seigaku (3rd Year)
Seishun (Seiharudai) First (Daiichi) Elementary School
|Japan U-17 Camp||
Court 5 (Former)
|Foreign U-17 Camp||
MIZUNO (PRO LIGHT S90)
MIZUNO (WAVE DUAK LIGHT <6K93009>)
Kunimitsu Tezuka (手塚 国光, Tezuka Kunimitsu) is a third-year who is currently the captain of the Seigaku tennis team. He is known to be a National-level player and has been noted by many characters in the series to be one of the toughest opponents in their era.
A serious and strict third year, he gives the series' protagonist, Echizen Ryoma, a chance to become a regular by allowing him to participate in the Intraschool Rankings Tournament. Furthermore, throughout the series, he, seeing the immense potential in Echizen, encourages him to develop his own style of tennis and to become Seigaku's "Pillar", leading the latter to consider him to be both a mentor and a rival. Like Echizen, he was made into a Seigaku regular during his freshman year.
Throughout the series, Tezuka constantly struggles with the pain in his left arm, which was caused by an injury inflicted upon him by an upperclassman two years prior to the start of the series. However, he is often willing to sacrifice his arm in order to defeat his opponent and to lead his team to the Nationals.
Despite being known as Seigaku's "strongest man", he initially remains on the sidelines during tournaments, as another teammate would sometimes play in his usual position of singles 1 or his team usually defeats their opponents in straight sets. Though he secretly challenges and defeats Ryoma in an unofficial match in an attempt to reach his junior to become Seigaku's new "pillar of support", his true skills are first shown during an Intraschool Ranking match against Inui.
Tezuka has dark brown hair and wears glasses. The parting in his hair, while as a child, was on the right side of his head. As a 3rd Year, the parting is on the left side. He is often seen with a stoic expression.
As the captain of the tennis team, Tezuka is serious about everything he does, and is very strict; one of his trademark phrases is "Don't let your guard down" ("Yudan sezu ni ikou") and to Ryoma "You will become the Seigaku pillar of support" ("Omae wa Seigaku no Hashira ni nare"). Still, he is fair and sticks to his word; if the rules are broken, he punishes everyone, including the regulars.
He would often make the entire team run laps when they break the rules - a trait which he inherited from Yūdai Yamato. Though his arm heals to some extent, the doctor still warns Tezuka against long matches and using his signature drop shot. Tezuka, however, considers his health secondary to the team's success, and continues to risk re-injuring himself in his matches to ensure his team's victory, even after returning from his medical treatment.
Throughout the original manga series, though Tezuka never smiles around his team it is shown that while he is in rehab for his arm he smiles, though he is apparently immensely popular among the female fans of his school. He smiles in a flashback when Oishi's uncle tells them both that he is healed, then when his team becomes the National champions at the end of the series that he shows a smile, though he instantly reverts back when Fuji points out the fact. He smiles again during his match against his Seigaku captain Yamato Yuudai.
Still, the fact that Tezuka never smiles and always looks so serious has been made into a running joke in the series. In the anime, his always serious attitude even prevents him from showing any reaction when drinking Sadaharu Inui's famous vegetable juices, resulting in others believing he is immune to the often dreaded concoctions. However, he quickly and sternly declines an offer to drink it later on.
Tezuka is normally addressed as Tezuka-kun, Tezuka-buchou (buchou meaning captain), Tezuka-san and Tezuka. The only people that refer to Tezuka as Tezuka are Fuji Shusuke, Oishi Shuichirou and Inui Sadaharu. The younger members (Ryoma, Momoshiro and Kaido) address him as buchou or Tezuka-buchou, respecting his position as captain more than as a senior student. Also showing they are not as familiar with him as the third years.
He also picks up some character traits from his grandfather, and a running gag in the story is that Tezuka looks older than his actual age, often as his teammates' teacher, despite the fact that many characters also look older.
Despite his stoic and calm personality it is shown that Tezuka was not fond of horror stories as a first year. Surprisingly he allowed scary rumors to affect him rather deeply as a youngster. When confronted with the same situation as in one of the seven horrific mysteries of Seigaku, Tezuka immediately became anxious and began rapidly throwing books in a frightened fit. The rumor was regarding a flying library book.
Even when he's in his third year Tezuka still displays a shocked reaction when being reminded of this experience (along with the rest of his fellow 3rd year classmates).
Three Years Prior To The Storyline
Three years prior to the start of the story, a young Tezuka showed up after the Junior Tennis Tournament and easily beat the tournament's runner-up, Sanada Genichirou. The tournament champion, Yukimura Seiichi, challenged Tezuka to a match, but the winner is not revealed. According to Sanada, they played evenly.
Two Years Prior To The Storyline
After entering Seishun Academy, Tezuka was seen as overconfident and arrogant by some of the upperclassmen at Seigaku due to his talents and seriousness. They were especially angered when they discovered that he was left-handed since he had easily beat them playing with his right.
A jealous teammate then injured Tezuka's left arm, leading to chronic problems, and his sealing of Hyaku Ren Jitoku no Kiwami, a technique which required the use of his left arm. Still, because of his skills, he was recognized by captain Yamato Yuudai, who convinced Tezuka, who had decided to leave the club because he did not want to be on the same team as people who hurt others with their racquets, to become Seigaku's "pillar of support".
This, along with the promise he made with teammate Shūichiro Oishi, in which Tezuka promised to lead Seigaku to the Nationals, encouraged him to stay in the tennis club. Shūsuke Fuji later requested a match against Tezuka, and though Tezuka was utterly defeated, Fuji was displeased with the outcome after finding out about Tezuka's injury. The two promise to play each other once again after Tezuka's arm completely heals.
One Year Prior To The Storyline
After a while, Tezuka became a team regular despite being a freshman. By his second year, he became the team's vice-captain, and defeated Hyōtei Academy's captain in the Tokyo Prefectural Tournament. He was invited to the Junior Senbatsu tennis training camp, but because his arm problems returned, he declined the invitation without stating his reasons to the organization.
In the Quarter-finals, Tezuka is not needed to play since Seigaku win all their matches. He was the reserve player.
In the finals agaianst Fudomine, Tezuka was also not needed since Seigaku won three matches. He was supposed to play in the singles 1 slot against Fudomine's Captain, Tachibana.
Seigaku overwhelm all their opponents, in both Quarter-Finals and Finals, against St. Rudolph and Yamabuki, which prevents Tezuka from needing to play since he is in Singles 1 position. In the Semi-Finals, Seigaku did not need to play, as Ginka withdrew out of fear.
The first serious official tournament match he plays is against Hyōtei's captain, Keigo Atobe. Though the return of Tezuka's arm injury causes him to collapse in pain, he refuses to give up, and after a long and tedious tie-break, the game ends with Atobe victorious, marking Tezuka's first loss in an official singles match. Tezuka then decides to go to Kyūshu in order to receive medical treatment for his injuries at a health clinic near Seishun University. While Tezuka overcomes his fear of feeling the pain in his shoulder, he continues to support his team, sometimes discussing the team's lineup for upcoming matches over the phone.
In the anime, instead of going to Kyūshu, Tezuka ends up going to Germany instead. Before he leaves, however, he decides to play one last match against Ryoma, with the regulars as the audience, using his right hand for the whole match. Tezuka takes time to adapt his Tezuka Zone for his right hand and gives Ryoma some trouble with it, , challenging Ryoma to adapt to a player who can evolve during the match. Ryoma takes the challenge head-on and eventually finds a way to counter it. It starts to become a close match with Tezuka slightly in the lead until Tezuka finishes the match with a right-handed Zero-Shiki Drop Shot.
Also, in the anime, he decides to return to Japan during his rehabilitation to be the subsitute coach at the Kanto Junior Selection Camp when Ryūzaki Sumire ended up getting ill and going to the hospital. Despite minor opposition at first, he gains the respect of his 'students' and he goes on to train and improve the players under his coaching.
After some time, Tezuka is challenged by Ryoma after Ryoma feels that he could not move on until he played against him again. However Ryoma eventually comes out victorious and Tezuka wishes him luck as he and Seigaku see Ryoma off as the latter travels to play in the Junior US Open.
Prior To Nationals
Prior to the Nationals, Tezuka travels to Kyushu after Tachibana suggested for him to visit an old hospital he used to go to. When Tezuka reaches Kyushu, he meets Chitose Miyuki, Chitose Senri's younger elementary school sister (Tezuka did not know at that time). She accuses Tezuka of stealing her racket and he learns that she suffered from yips while playing tennis.
They then get into an arguement with tennis players from Shishigaku Middle School, resulting in Tezuka's defeat due to his inability to raise his shoulder. Miyuki, enraged because she realized Tezuka was injured, engages in a match with the person victorious over Tezuka. Right when he was about to hit a smash at her, Tezuka saves her while realizing that the source of his injury was also yips. Tezuka goes on to crush his opponent, while Chitose Senri shows up on the phone with Tachibana, informing his friend that Tezuka healed his injury prior to meeting his doctor.
He returns right before the National Tournament. In his first match upon his return, he is overwhelmed at the start, and realizes he needs he must not hold back so he unseals his Hyaku Ren Jitoku no Kiwami, to defeat Higa Middle School's captain, Kite Eishiro and to teach him the valuable lesson that Tennis Rackets are not used to hurt people after witnessing Kite's violent style of play.
Tezuka goes on to defeat Hyōtei's Kabaji Munehiro in the Quarterfinals after a long match due to Kabaji copying all of Tezuka's techniques. Kabaji makes a miraculous comeback however the difference between the copy of Tezuka Kabaji attempts to perform and Tezuka himself comes to light once the rain begins. Due to Kabaji not having the skill to be able to play well in rainy conditions while Tezuka was more than able to, Tezuka wins 7-6.
In the National semi-finals, despite it being a doubles match, Tezuka plays one-on-one against Shitenhōji's Chitose Senri; their partners step aside in order for them to play with their full power. Tezuka realizes that Senri was Miyuki's older brother at the start of the match, seeing the Chitose siblings together. When the match starts, Miyuki watches the match between her older brother and her new friend, Tezuka.
After unveiling his new Zero-Shiki Serve, as well as revealing that he has opened the door to Saiki Kanpatsu no Kiwami, Tezuka wins completely 6-1. Chitose tells Tezuka that his younger sister won her school's tennis tournament and asks him to congratulate her, a request Tezuka refuses even after Chitose begs him.
Before the final match of tournament against Rikkai Junior High School, Tezuka tells Oishi that he plans to go to Germany in order to become a professional tennis player after this tournament. During his match against Sanada Genichirō, Tezuka unveils his Tezuka Phantom, however, this, combined with the continuous use of the Zero-Shiki Serve, damages Tezuka's arm, creating a weakness which Sanada soon uses to his advantage. A cord ball by Tezuka which drops from the net to his side, results in Sanada's victory. However, in the end, after Ryoma's miraculous win against Rikkai's captain Yukimura Seiichi, Tezuka finally achieves his goal of turning Seishun Academy into the National champions, and offers one of his rare smiles.
Prior to U-17 Camp
Osaka (OVA Only)
After the Nationals, Seigaku's tennis club travels to Osaka to have a joint training session with Shitenhoji's tennis club. Tezuka plays against Kintaro on the first day of practice but their match is interrupted by Shitenhoji's Baka-Pair, who sends Hitōji Yūji flying through the air and crashing into Kintaro.
Later on, Tezuka and the Seigaku regulars bump into Higa's Kite, Rin, Kai, Kei, and Chinen, who are forced to work their way home after they missed their flight back to Okinawa after the National Tournament. Kite claims that they are not from Higa, saying that they are just ascetic monks with the names of "Eishun, Rintou, Kaiyuu, Keigan, and Chinen," a lie the Seigaku regulars see through.
Tezuka is next seen in a bookstore looking at a book in German. Miyuki yells out his name and they talk together under a tree outside where Tezuka tells Miyuki to send a message to her brother, Senri, to attend the training session. Miyuki agrees and asks Tezuka if his shoulder is healed yet, to which he replies yes. When she is leaving, Tezuka congratulates Miyuki for winning her school's tournament causing her to blush.
The five Higa students are seen angry that the Seigaku regulars at night because get to stay in an air conditioned inn while they had to stay in the hot temple where they worked. Kite devises a plan to invade the Seigaku living quarters and challenges them to a pillow fight for the right of the room. Kite aims a pillow at Tezuka's previously injured shoulder, angering the Seigaku captain who retaliates by aiming a pillow at Kite's face. This starts the pillow fight between Seigaku and Higa, only to be stopped when Coach Ryuzaki comes in with a transparent gown on, revealing her undergarments, causing all of the students to drop dead on the floor with defeat.
Tezuka then tells Momoshiro and Kaidoh that the training with Shitenhoji the next day will only for 1st and 2nd years, meaning that the 3rd year regulars will not participate. After Momoshiro and Kaidoh storm off without success, Tezuka tells the 3rd years that they cannot help those two. A few hours later, the 1st and 2nd years asks Tezuka for help in organizing a night training session with Shitenhoji so that they can impress Momoshiro and Kaidoh the next day.
Tezuka contacts everyone through text message and they all gather at Shitenhoji's tennis courts where the 1st and 2nd years practice with Shitenhoji. Tezuka and Shiraishi watches Momoshiro and Kaidoh looking at the courts from the outside, realizing that the two 2nd years finally realized what they needed to realize. The 3rd years Seigaku regulars comment on how ironically, Tezuka was the one who said to not give Momoshiro and Kaidoh help, yet he was the one who helped them at the end because Tezuka himself could not stay away.
At the end, Tezuka and Momoshiro are walking together to the Tokyo-bound train with supplies, talking about the training session. Momoshiro tells Tezuka that it was a great training session and that he thought after the 3rd years graduate, it would be a scary change. Tezuka replies to Momoshiro that no matter how far the 3rd years ago, things would never change. However, the two then realize that the train to Tokyo was leaving without them, with the entire Seigaku tennis club staring at him and Momoshiro as the train moved away. Tezuka drops his bag to the floor as the train is leaving, with Momoshiro screaming that he realized that him missing rides will never change as Tezuka says his catchphrase 'Yudan sezu ni ikou" (Don't let your guard down).
In the second PairPuri volume, on the day prior to the U-17 Camp, Tezuka goes fishing with his grandfather, much to the Sanada's family's dismay. Tezuka's grandfather had a scheduled board game against Sanada's grandfather, but Tezuka's grandfather decided to skip it to go fishing with his grandson. While fishing, both Tezuka and his grandfather receive angry text messages from each other's respective rivals that read "TEZUKAAAAAAA!"
While fishing, Tezuka picks out a new hook and notices that one of his hooks was shaped like Oishi. He thinks back and remembers how Oishi had given it to him as a birthday gift and then decides to use it.
(OVA Only) The next time they have practice, Tezuka thanks Oishi for the hook and shows him a picture of himself catching a super large fish after using the Oishi hook, much to Oishi's delight.
Later, Tezuka becomes one of fifty middle school students invited to an elite training camp for the Japanese Under-17 tennis team. Coach Ryuzaki shows Tezuka and Oishi the invitation Seigaku received for the U-17 Camp.
Tezuka, along with the rest of the Seigaku regulars as well as several other middle schoolers, were invited to the U-17 Training Camp.
Upon arrival, the middle schoolers gather together. A helicopter suddenly drops tennis balls on the floor. The head coach then announces that all players unable to obtain a ball must leave the camp. All 50 middle schoolers are able to obtain a ball.
He, along with his fellow middle schoolers, were placed in a tie-breaker style elimination match against the partners they had thought they would be playing with. Tezuka paired up with his protege, Kaidō Kaoru, and tried to convey him the message of being the next captain of Seigaku, and defeated him 7-0.
Tezuka was able to move on to the 5th court relatively easily along with fellow middle schoolers Atobe Keigo, Tachibana Kippei, Chitose Senri, Ishida Gin, Akutagawa Jiro, Kite Eishiro, Shiraishi Kuranosuke, Akutsu Jin, Kirihara Akaya, Liliadent Krauser and Court Leader Oni Juujiro The Gate Keeper. Some time later, he encountered Yamato Yuudai, his former captain who now occupied the 3rd court, once more. Even though Yamato has changed drastically in looks, Tezuka was able to recognize him. Due to Oni of the 5th court deciding to put forward a Team Shuffle battle the 3rd court in a National-Styled match, Tezuka was selected by Oni for Singles 2, playing against Yamato. Before their match began, Tezuka cryptically stated that Yamato "didn't change at all."
Tezuka and Yamato play a drawn out match, with Tezuka recklessly using Tezuka Phantom again, until Yamato shows him the massive scars on his right arm which was due to playing beyond his arms capabilities. He warns Tezuka of the repercussions of playing recklessly for the sake of your team and conveys his wishes for Tezuka to enjoy playing tennis and to play for his own sake for once, since he has already accomplished everything he wished to do. After seeing this, Tezuka finally smiles during a match thanking his captain for everything he taught him. Tezuka eventually unleashes Muga no Kyouchi Pinnacle of Perfection. Tezuka defeats Yamato.
Tezuka leaves the U-17 Camp but not before playing Fuji his promised match. With his new Pinnacle of Perfection, he easily overwhelms Fuji, showing his new incredible level of strength. He then leaves the All-Japan Junior camp and heads to Germany.
Tezuka is then later seen having arrived in Germany outside a school, though his legacy at the U-17 camp is revived when Niou transforms himself into Tezuka to play doubles with Atobe.
In chapter 135, he is seen having a jog with the captain of the German team. Later on, he is having a match with the Germany U-17 captain. The coach is impressed with him and wants to contract him to the team. However, the German captain advises against the idea.
It was revealed that ever since he arrived in Germany, he has been training to become a German U-17 representative.
The following is of Tezuka's known official matches:
Official Middle School Tournaments
|2007 Tokyo Prefectual||Quarterfinals||Yamabuki Middle School||Singles 3||Sengoku Kiyosumi||Won (Unknown)|
|2007 Tokyo Prefectual||Finals||Hyōtei Academy||Unknown Singles||Team Captain||Won (Unknown)|
|2008 Tokyo District||Quarterfinals||Gyokurin||Reserve Player||None||None|
|2008 Tokyo District||Finals||Fudomine Middle School||Singles 1||Tachibana Kippei||None (NOTE-1)|
|2008 Tokyo Prefectual||Quarterfinals||St.Rudolph||Singles 1||Nomura Takuya||None (NOTE-1)|
|2008 Tokyo Prefectual||Finals||Yamabuki Middle School||Singles 1||Muromachi Tōji||None (NOTE-1)|
|2008 Kanto Regionals||Round 1||Hyōtei Academy||Singles 1||Atobe Keigo||Lost (6-7) (35-37)|
|2008 Nationals||Round 2||Higa Chuu||Singles 1||Kite Eishirō||Won (6-2)|
|2008 Nationals||Quarterfinals||Hyōtei Academy||Singles 2||Kabaji Munehiro||Won (7-6) (7-0)|
|2008 Nationals||Semi-Finals||Shitenhōji||Doubles 1||Chitose Senri/Zaizen Hikaru||Won (6-1) (NOTE-2)|
|2008 Nationals||Finals||Rikkai Daigaku Fuzoku||Singles 3||Sanada Genichirō||Lost (5-7)|
- NOTE-1 No results due to Seigaku already winning 3 sets
- NOTE-2 Doubles partner is Sadaharu Inui, but match is played as a 1-on-1 against Chitose.
Unofficial Singles Matches
|2005||Jr. Singles Tournament||Sanada Genichirō||Won (6-0)|
|2005||Jr. Singles Tournament||Sanada Genichirō||Won (6-1)|
|2005||Jr. Singles Tournament||Yukimura Seiichi||Unconfirmed|
|2006||Seigaku||Yamato Yūdai||Won (6-0) NOTE-1|
|2006||Seigaku||Fuji Shusuke||Lost (0-6) NOTE-1|
|4/2008||Near a train station||Ryoma Echizen||Won (Unknown)|
|5/2008||Seigaku||Momoshiro Takeshi||Won (Unknown)|
|7/2008||Seigaku (Anime only)||Echizen Ryoma||Won (6-4) NOTE-1|
|7/2008||Jr. Senbatsu Camp||Takahisa Kajimoto||Won (NOTE-2)|
|7/2008||Jr. Senbatsu Camp||Shishido Ryō||Won (NOTE-2)|
|7/2008||Jr. Senbatsu Camp||Sengoku Kiyosumi||Won (NOTE-2)|
|7/2008||Jr. Senbatsu Camp||Ootori Chōtarō||Won (NOTE-2)|
|8/2008||Near a train station (Anime only)||Echizen Ryoma||Lost (Unknown)|
|8/2008||Shishigaku||Daimaru Daikichi||Lost (0-6) NOTE-1|
|8/2008||Shishigaku||Unoki Junitsu||Lost (NOTE-1)|
|8/2008||Shishigaku||Daimaru Daikichi||Won (Unknown)|
|8/2008||Seigaku||Oishi Shūichiro||Won (6-0)|
|8/2008||Seigaku||Momoshiro Takeshi||Won (Unconfirmed)|
- NOTE-1 Note that Tezuka's arm was inhibiting him from playing at his full strength at all of these matches. Against Yamato, Tezuka was using his right arm to hide his true strength, while Yamato himself already had his arm injured due to extensive practicing, which forced Yamato to not play at his best. Against Fuji, his arm was already damaged thanks to Takesue, and against Ryoma, he was using his right hand due to the shoulder injury after his match against Atobe. At Shishigaku, technically, his arm was cured, but he was afraid to raise it due to the fear of another injury, but he was able to overcome it thanks to Chitose Miyuki.
- NOTE-2 These matches are all exclusive to the Jr. Senbatsu arc of the anime and the "matches" were all pretty much 1-point matches to see if Tezuka was good enough to be the coach. Tezuka only used light swings with his racquet, as per doctor's instructions.
U-17 Camp Results
|Type of Match||Partner||Opponent||Score|
|Tiebreaker-style Elimination Match||None||Kaoru Kaido||Won (7-0)|
|Player Shuffle||None||Unknown 5th Court Member||Won (Unknown)|
|Team Shuffle Singles 2||None||Yamato Yūdai||Won (6-4)|
Playing Styles and Techniques
- Foot Size: 27.5 cm
- Hobby: Fishing, camping, mountain climbing
- Family Composition: Grandfather, Father, Mother
- Father's Occupation: Company Employee (firm)
- Spends Allowance On: Book Fees
- Favorite Motto: The enemy exists within oneself.
- Best Subject: World History
- Worst Subject: None
- Committee: Student Council President
- Most Frequently Visited Spot at School: Library
- Favorite Colors: Green or Blue
- Favorite Foods: Unacha (a dish where eel is dipped and broiled in soy-based sauce with fish and kelp soup poured over it)
- Favorite Movies: Famous classics regardless of whether they're Japanese or foreign
- Favorite Book: Western books
- Favorite Music: Classical (Beethoven)
- Favorite Type: Those who give it their all in everything (It's fine if they're a little scatterbrained), A person who is energetic and serious
- Favorite Date Spot: Fishing in the streams on a mountain
- What he wants the most at the moment: A photo book of famous mountains in the world
- Daily Routine: Writing in his journal
- Dislikes/Bad at: Neglecting one's work, being idle
- Skills outside of Tennis: Woodwork/Carpentry
- Favorite Shoe Brand: MIZUNO (WAVE DUAK LIGHT <6K93009>)
- Favorite Racquet Brand: MIZUNO (PRO LIGHT S90)
- Catchphrase: Yudan sezu ni ikou or "Don't let your guard down," "Let's go without being careless"
- Second Best Sport: Archery 
Daily School Life
- 05:30 - Rises from bed. Has breakfast after stretching and weight training.
- 06:30 - Listens to English lessons on the radio
- 06:50 - Goes to school. Morning practice
- 08:40 - First Period: Society/World History
- 09:40 - Second Period: Calligraphy
- 11:00 - Third Period: Math III.
- 12:00 - Fourth Period: Music/Classics Appreciation.
- 12:50 - Lunch break: Has unacha (bento)
- 13:20 - Fifth Period: P.E./Hurdling
- 14:20 - Sixth Period: Science III/Physics.
- 15:20 - Student council meeting. Takes care of reports on suggested items.
- 16:00 - Club activities. Free practice.
- 19:00 - Returns home. Takes a bath
- 19:30 - Dinner.
- 20:00 - Watches the TV program "The gluttonous player title." (recording)
- 21:00 - Reads. (mainly foreign books)
- 21:30 - Diary. Goes over points that need reflection.
- 22:30 - Goes to sleep.
Note from Ishikawa Hiroyuki (Principal): Tezuka-kun is our school's pride. As the student council president, he is the captain who controls the entire country. I have no complaints.
Note from Oishi: He doesn't show people his laughter... He seldomly laughs outside, but I wonder if he laughs at home.
- Tezuka Kunikazu - Tezuka has a very close relationship with his grandfather and has a lot of respect for him. Kunikazu also has a strong bond with his grandson. He would even skip his shogi game (New Prince of Tennis OVA 1) just to go fishing and spend some time with him.
- Fuji Shusuke- Tezuka and Fuji have been friends since they were 1st year, and over the years they have shared a strong bond. Even though Tezuka doesn't show it much, he values his friendship with Fuji and considers Fuji as one of his strongest rivals. He and Fuji are often seen together, have shared a number of smiles with each other, and indeed seem able to communicate with each other without words.
- Yudai Yamato- Tezuka's former captain during his younger years. Having to suceed him as the team captain, making him the "pillar of support," Tezuka has shown to have a lot of respect for his former captain, Yamato has even helped him remember to have fun in tennis again, and has encouraged him to finally start his tennis profession in Germany.
- Echizen Ryoma - Tezuka and Ryoma both have a strong senpai and kohai relationship, and has consider Ryoma has his own rival. Tezuka has trained Ryoma to be a player of his own experience, and has given him reason to dream higher and choose his own path to follow. His relationship with Ryoma is quite similair to his relationship with his former captain Yudai Yamato, and just like his freshman days he also made Ryoma the "pillar of support." He has believed in Ryoma till the very end.
- Other seniors (Eiji, Oishi, Inui, Kawamura) - knowing his fellow seniors since their freshman days, Oishi and Tezuka are on good terms. As his vice-captain, Oishi has helped him lead the tennis club especially during his absence. His relationship with Inui is quite good since he relies on him as team manager and the "data man" to gather necessary data for the team. He seems to have be on good terms with Eiji and Kawamura.
- Momoshiro and Kaidoh - Tezuka seem quite strict with his 2nd year regulars specially due the number of arguements they have just about everyday. They are often seen being scolded and ordered to run laps but he has a lot of faith in them to one day lead Seigaku.
Tezuka's character has been well-received by readers since his introduction, having ranked in the top five most popular characters in every Shonen Jump character popularity poll of series. He has also remained in the top 10 in the annual Valentine Chocolate Recipient rankings Takeshi Konomi releases in the manga, in which readers mail in who they want to send chocolate to. In publications on manga and anime, however, his character has received mixed reviews.
Reviewers comment on his lack of originality, and that the impossibility of one his techniques is part of why the story seems idiotic. Though one reviewer questions his likability as a protagonist, his personality is praised, with one seeing an example of his devotion as one of the highlights of the series, and another commenting that he is a good captain who is properly motivating the main character.
- Tezuka is very close to his grandfather as they often go fishing together.
- When he has trouble with math, Tezuka asks Oishi for help.
- In the official art by Konomi, Tezuka is shown winning a tournament trophy as a pro when he is 25. It also appears that he has been sponsored by Adidas.
- Tezuka is shown to be so intelligent, that he is able to correct teachers.
- Since Tezuka looks older than he really is, he has been mistaken for a teacher. 
- At the age of 10, Tezuka has climbed Switzerland's Matterhorn with his father.
- Tezuka was made vice-captain of the tennis club in his second year.
- Tezuka has been to Taiwan, before becoming a third year.
- Tezuka had originally planned to leave for Germany during the Fall trimester, and after the Nationals Tournament. He went as far as to tell Oishi that the tournament would be his last time playing tennis in Japan. 
- Tezuka thinks that Shiraishi’s ability to stay calm and composed through any tough situation is what makes him scary.
- Tezuka said he can think of 10 things at the same time. This included saying "Ich liebe dich" (I love you in German) while conversing with Fuji, and in turn making Fuji blush, somewhat embarrassed. 
- He can speak German
- He just bought a pack of new mountain climbing boots and is thinking about which mountain to climb next.
- His grandfather Tezuka Kunikazu (Age 72) is old police friends with Sanada's grandfather, Sanada Gen'emon. The two often play Shōgi together with 99 wins and 99 losses each.
- It is interesting to note that the males of the Tezuka family have their first names begin with "Kuni". Kuniharu (Tezuka's father's first name) means "fine country". Kunikazu (Tezuka's grandfather's first name) means "one country". Kunimitsu means "light country". 
- In the TeniPuri episodes, Tezuka is known to be a leader of Seigaku while defeating the Rudolphian, Mizuki. Also in the baseball episode, he was shown to be going back to Japan for a baseball game. But when he was about to hit the ball, his shoulder suddenly got hurt. And in the Western TeniPuri, he was a lone gunman, but he failed to bring any guns. In the TeniPuri Family episodes, Tezuka is the grandfather of the TeniPuri family, where he is paired up to Fuji, the grandmother.
- It is only in the OVA, the original anime's epilogue, and fanbook 40.5 that it is stated that Tezuka would be leaving for Germany in the next Spring.
- Takeshi Konomi described Tezuka as the character who he has the least in common with.
- "I can't forgive anyone who breaks the rules." ("Kiritsu wo midatsu yatsu wa yuru san")
- "Echizen, become Seigaku's pillar of support!" ("Echizen, omae wa Seigaku no hashirai nai.")
- "Don't let your guard down." ("Yudan sezu ni iko.")
- "Is that enough?" ("Mou ii no ka?")
- (In response to Atobe's drive volley) "Nice drive volley." ("Ii drive volley da.")
- (During his first year) "I don’t mind that. But instead, Oishi kun...in our time, let’s definitely lead Seigaku to the Nationals." ("Kamau wa nai sa. Sono kawari, Oishi-kun...ore-tachi no dai de wa, zettai ni Seigaku wo Zengoku e michibi te yarou ze.")
- (In response to Takesue injuring his arm) "Stop screwing around...How many years have you all been playing tennis? Rackets are not used for injuring other people! If this is what this kind of club is...Oishi-kun, sorry. I’m quitting." ("Fuzakeru na...Anata-tachi wa itai nannen tennis wo yatterun da? Racket wa hito kizutsu keru tame ni arun ja nai! Sonna bukatsu nara...Oishi-kun, gomen. Ore yammemasu.")
- "Don’t hold back, Atobe. Come with everything you have." ("Enyou suru nayo, Atobe. Honki de koi.")
- "Atobe...sorry, but we will be the ones going to the Nationals." ("Atobe...warui na, Zenkoku ikasete morau zo.")