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Sengoku kiyosumi
Kiyosumi Sengoku



Sengoku Kiyosumi


Lucky Sengoku




14 (The Prince of Tennis)
15 (The New Prince of Tennis)


170 cm


59 kg


November 25



Blood Type



Older Sister

Junior High

Yamabuki (3rd Year)





Club Position


Japan U-17 Camp

Court 6
No.5 World Cup Middle School Division (replaced Jin Akutsu)

Dominant Arm


Play Style

All Rounder


MIZUNO/Wenew 900Ti


Head/C,Tech 6000 MID

Manga Debut

Genius 44

Anime Debut

Episode 21


Atobe's Gift

Voice Actor

Kōsuke Toriumi (Japanese)

Kiyosumi Sengoku (千石 清純, Sengoku Kiyosumi) is the pride of Yamabuki Middle School boy's tennis team. His innate talent in tennis allows him to be considered as one of the strongest and best players in the country. Sengoku believes that he is also very lucky, thus having the nickname "Lucky Sengoku". However his "luck" doesn't seem to work out well with girls.


Sengoku has bright red hair and green eyes. In the anime, he has bright orange hair and blue eyes.


Sengoku is a happy-go-lucky kind of guy and is a huge flirt. 

He is very laid-back and likes to tease others. When he was first introduced, he was up and about scouting cute girls at the Seigaku Girls' tennis club. Sengoku is extremely careful with his womanizing ways though because he does not want to pick one girl over the others according to Shintenhoji's Konjiki. Sengoku can also be quite the slacker and can happily skip practice without a care in the world if he wants to.

Despite his carefree personality Sengoku is quite ferocious once he puts his mind to things. Although no matter how determined he is, he will always be easily distracted by girls.


One Year Prior To The Storyline[]

Nicknamed by his peers because of his insurmountable good luck, Lucky Sengoku had the opportunity last year to replace Kunimitsu Tezuka at the Jr. Senbatsu Training Camp after the latter refused the invitation. Unfortunately, Sengoku appeared to have used up his luck this year, losing two highly-contested matches.

Tokyo Prefecturals[]

Sengoku appears during the start of the Tokyo Prefectural Tournament and talks briefly with some Seigaku regulars.

Sengoku and Yamabuki power their way through to the Semifinals of the Tokyo Prefectural Tournament and meet underdogs Fudomine Junior High who had already caused an upset in the tournament. However Yamabuki did not have to go through a long match with Fudomine as Ibu Shinji suffered an injury before the match making him forfeit meaning Yamabuki were gifted an extra win and were able to easily reach the Finals of the Tokyo Tournament where they met Seigaku in the Finals.

After winning, surprisingly, Doubles 2 but losing in Doubles 1, in Singles 3, Sengoku takes on Momoshiro Takeshi. Even though he led 5-3 in the end he loses to Momoshiro 5-7 causing Seigaku to lead 2-1.


He and Yamabuki went to the Regionals and cruised through to the Quarter-finals.

After his loss to Kamio Akira, Sengoku took a short break to reinvent his tennis and returned anew, helping Yamabuki to the Nationals.

Regional Select Invitationals Camp[]

This is an anime exclusive arc. Sengoku Kiyosumi along with several other players from the Kanto Region accepts an invitation to the Junior Kanto Regional Select Camp. He trains with several other players there and is amongst the Eight players selected to represent the Junior Kanto Japan region against the Junior West Coast USA region. During the camp he and Momoshiro Takeshi have a match during training that Sengoku wins confidently 6-3.

Regional Select Invitationals[]

Sengoku plays in Singles 3 against Bobby Max and the match is an incredibly long and drawn out one, and the game eventually ends in a no-game. However Kanto Region Japan Juniors come out as victors and win with 3 wins, 1 draw and 1 loss.


Yambuki get off to a good start in the nationals defeating St. Icaria. In which Sengoku plays Singles 1 throughout their tournament since Jin Akutsu quit the club just before the Kanto Regional Tournament. Sengoku defeats St. Icaria's ace Richard Sakata The Shooting Star in Singles 1 in the first round as Yamabuki ease their way to Round 2. Unfortunately due to the loss of Akutsu, Yamabuki couldn't win the next round against Nagoya Seitoku. Ending their run in the Nationals. At the end of the encounter between the two sides despite Sengoku winning his match, He says Its finally over...Akutsu.

Sengoku is present in the audience with the Yamabuki team at the Nationals Final between Seigaku and Rikkai Daigaku Fuzoku.

U-17 Camp[]

Sengoku is invited to the U-17 Camp along with his Yamabuki teammates Akutsu, Minami, and Masami and several other Middle Schoolers. 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 middle schoolers are able to obtain a ball. Several Middle schoolers are challenged for their balls by High Schoolers as some middle schoolers greedily went over the top and took several balls for themselves. Later on in the day, the Mental Coach arrives and requests all middle schoolers pair up. He then suddenly declares all pairs must play a quick tie-break game where the loser must go home.

He is drawn in a tie-breaker match against Momoshiro after the two of them initially believed they would be a doubles pair. However due to Momoshiro having damaged his wrist in a match against high schooler Oni, it meant Momoshiro had to forfeit, leaving Sengoku to simply advance onto the courts of the U-17 training ground. Along with many of the middle schoolers, he defeats all his high school opponents making him reach the 6th court.

Sengoku and Yukimura watch Atobe get wiped by Irie

Sengoku and Yukimura of the 6th Court watching Atobe get wiped by Irie.

Sengoku, like the rest of the camp at the time, played audience to the Team Shuffle between 5th Court and 3rd Court where primarily due to Irie's entertainment purposes, 5th Court became victors and replaced the 3rd Court and swapped places. Sengoku was present with the rest of the camp later on when the Top 10 arrive at the main courts and witness the shock upset that No.s 11-19 were defeated and replaced by Middle Schoolers. He then asks Akutsu to return a library book that he borrowed at the camps library which leads to Akutsu's confrontation with All-Japan Junior Representative No.6 Ōmagari Ryūji.

U-17 World Cup Group League[]

Sengoku is seen present with the other Middle Schoolers during Japan's matches against Greece and Switzerland. Particularly during Jin Akutsu's match with Switzerland's Alexander Amadeus, Sengoku is seen fully supporting and cheering for Akutsu, noting how much Akutsu had already changed for tennis. After they notice that Akutsu's shoes had already turned red because of blood vessels popping at his feet, Sengokuk comments that Akutsu might be able to endure that since that could be his own way of atonement for all the sins he had done regarding tennis. As Akutsu manages to score a game against Amadeus, Sengoku and the other middle schoolers are overjoyed, only to the fact that Akutsu is not able to play anymore. Later on, he assists Akutsu back home to Japan.

Prior to the U-17 World Cup Quarter-Finals[]

After sending Akutsu back to Japan, Sengoku is immediately called back by the team as he would serve as a replacement for Akutsu. He then becomes the No. 5 Middle School Representative for the Japanese team. However, he did not play a match against France U-17 and Germany U-17 for the Quarter-Finals against Semi-Finals respectively.

Prior to the U-17 World Cup Finals[]

Before the U-17 World Cup Finals, Japan U-17 held an intra-ranking tournament to determine the players who would play against Spain U-17 in the finals. With this, Sengoku lists himself to play under Singles 2, with Ryoma Echizen being his first opponent. Off-screen, it seems that Ryoma easily fought against Sengoku, until the last point where Sengoku hits a new technique called Dragon Cannon to Ryoma. Ryoma was able to return this and ends the match with a score of 6-1. Sengoku then loses the opportunity to play in the finals against Spain.

Tennis Record[]

Official Middle School Tournaments[]

Tournament Round School Position Partner Opponent(s) Score
2007 Tokyo Prefectural Quarterfinals Seishun Academy Singles 3 None Tezuka Kunimitsu Lost (unknown)
2008 Tokyo Prefectural Round 2 Takaoka Nishi Singles 3 None Kawamura Won (6-0)
2008 Tokyo Prefectural Round 4 Seidai Koizumi Singles 3 None Nakayama Won (6-0)
2008 Tokyo Prefectural Final Seishun Academy Singles 3 None Momoshiro Takeshi Lost (5-7)
2008 Kantō Regionals Round 1 Ikari Singles 2 None Uchiyama Itaru Won (6-2)
2008 Kantō Regionals Quarterfinals Fudomine Junior High Singles 2 None Kamio Akira Lost (6-7)
2008 Nationals Round 1 Saint Icarus Singles 1 None Sakata Richard Won (6-4)
2008 Nationals Round 2 Nagoya Seitoku Singles 1 None Nanahara Shou Won (6-4)

Japan U-17 Intra-Ranking Tournament[]

Type of Match Partner Opponent(s) Score
Singles 2 None Ryoma Echizen 6-1 (Lose)

Playing Style and Technique[]

Sengoku is an All-Rounder and an overall balanced player. He’s shown to be skilled enough to have been recruited for the Jr. Senbatsu team the previous and current year, although Sengoku himself has noted that his invitation in the previous year is due to Tezuka declining his invitation.

He is also shown to have mental strength, both in terms of his own mental capabilities and his ability to attack other’s mentality. This was shown when right after Momo used his specialty, the Dunk Smash, Sengoku used a Dunk Smash of his own almost effortlessly, which shook up Momo mentally (due to the Dunk Smash being his signature technique and being a relatively difficult technique to perform properly). Right after breaking Momo’s service game after using the Dunk Smash, he relentlessly attacked with Koho, his greatest weapon, to strike Momo down and widen the score between the two. He is able to use his body balance and motion vision to the fullest, allowing him to keep in pace in rallies and utilize techniques like Koho and Dunk Smash.

In the anime, his strong mentality is elaborated even more, having abandoned his original tennis style and training from the ground-up, despite the difficulty of such a task. He also was able to incorporate another sport, boxing, to his play style, strengthening his fundamentals and polishing his technique to a high level that helped dominate his rematch against Momo and earned him a spot on the Jr. Senbatsu team.

Dunk Smash

A powerful, fast smash that can cinch the point from most lobs, this is Momoshiro’s signature move, but Sengoku copied this technique from Momo during their match against each other. The Dunk Smash is different than normal smashes in that he uses the momentum from running to hit the smash, through perfect timing, by jumping forward, instead of the usual jumping backwards to hit a smash. This allowed Sengoku’s smash to be twice as powerful and more effective than a normal smash.

Motion Vision

Possessing a sharp eyesight which allows him to catch the minute movements of a person or ball in motion, Sengoku is one of the rare few gifted with this ability. Players with Motion Vision usually can react faster to his/her opponents, due to having the advantage to see the ball right when it comes, allowing him to return his opponent’s shots at his natural form easier.

Sengoku is able to use it to its fullest abilities, being able to see various shots in slow motion (such as the fast Jack Knife) and react according to the opponent’s movement. He is also able to watch the opponent’s movements sharply and time his shots to hit the ball towards the opponent’s opposite side the moment his opponent moves his foot towards any direction. Using Motion Vision allowed Sengoku to shut down Kamio’s speed for a short period of time.

However, Sengoku’s body cannot always keep up with what it sees, thus, Sengoku can fall prey to shots that suddenly change its rate of speed (Sonic Bullet) or shots that are too powerful for him to handle (Jack Knife). This weakness is relative to the nature and skill of the opponent's technique and Sengoku's physical ability, as in the anime, once Sengoku physically trained himself, he was able to effortlessly return the Jack Knife.


A serve where Sengoku first tosses the ball much higher than the norm, then he jumps high to hit the serve straight down from a high position, allowing him to hit the ball at its highest point. This allows Sengoku to hit his serve with high speed and power. Furthermore, Sengoku aims for the center of the service box, which is the shortest distance from the service side to the opponent’s.


After the regionals, Sengoku is shown to have developed a boxing based style of tennis. This new style is so very much like boxing that some of the hits can be compared to uppercuts, jabs, and other punches that are seen in boxing.

Boxing Tennis

U-17 Camp Stats[]

  • Speed: 2
  • Technique: 4
  • Mental: 5
  • Stamina: 3
  • Power: 3

Personal Information[]

  • Father's occupation: Accountant
  • Hobby: Fortune-telling, Spying on cute girls
  • Favorite Subject: Japanese, Design, Mathematics
  • Worst Subject: History (especially era history)
  • School Committee: None
  • Favorite Food: Okonomiyaki, monjayaki
  • Favorite Color: Lucky colors
  • Favorite Music: Idol pop
  • Favorite Book: "367 Days of Fortune Telling"
  • Favorite Movie: "Charlie's Angels"
  • Favorite Date Spot: Riding a ferris wheel
  • Preferred type: All the girls in the world!
  • Thing He Wants Most: Naadi astrology leaves
  • Most Visited Spot on Campus: Dining hall
  • Daily Routine: Checking the morning TV fortunes, maintaining his eyebrows
  • Hobbies: Fortune telling, watching cute girls
  • Things He's Bad With/At: Being tickled
  • Things He Spends his Allowance On: Fortune telling magazines
  • Speciality Outside of Tennis: Easy magic tricks, lacrosse

Tennis Bag Content[]

  • Photo Booth Album (プリクラ帳)
  • Two Pens/Markers (ペソ)
  • Cellphone
  • Gameboy Advance SP
  • Hairbrush
  • Lapis lazulli (gemstone)
  • Divination Book (タ口ツト占いの本)
  • Clean & Clear Oil Control Film


  • (About Akutsu) “Isn’t it ok? Since he’s strong.” (“Iin ja nai? Tsuyoke de ya.”)
  • “Alright, lucky! That was good!” (“Yosh, lucky! Oomoke!”)
  • (Before his serve against Momoshiro) “Well, let’s have some fun, Omoshiro-kun.” (“Saa, tanoshi masete kure yo, Omoshiro-kun.”)
  • “Un, that was perfect!” (“Un, zekocho!”)
  • “I’m so lucky. Ah, no, no, I can’t rejoice from other people’s misfortunes.” (“Ore te lucky! Ah, ikan ikan, hito no fuko yorokono wa ikan zo.”)
  • “Awesome!” (“Joutou!”)
  • "Yes, I see it!" (“Yosh, mie ta!”)
  • (Against Momoshiro’s Jack Knife) “Even with his leg cramping, against this shot, I’ll return it with all my strength, Omoshiro-kun!”
    • (“Kata ashi ga keren shiteru to yu no ni kono shot kochi mo zenryoku de ikasete morau yo, Omoshiro-kun!”)


  • The name Kiyosumi means "purity, innocence" (清純).
  • Kiyosumi's surname Sengoku means "thousand" (千) (sen) and "stone, volume measure" (石) (goku).


  • While reinventing his tennis style, he went to do boxing lessons in order to rebuild his tennis style from a different sport, leading everyone believing that he is not Lucky Sengoku anymore. But he is still saying Lucky! upon meeting girls who are talking to him.
  • Since his first match with Momoshiro Takeshi, he started nicknaming him "Omoshiro-kun" (coming from Omoshiroi, which means funny, interesting)