Odachi High School ; : : A two-time yokozuna champion in elementary school due to his natural talent, he was given the epithet
National Treasure . But his career stalled in junior high due to his diminutive size of , and he left competitive sumo after suffering his third-consecutive loss. He decides to make his return in high school three years later. Despite his size, he is extremely muscular and fights using "yokozuna-style" sumo, which sees him attacking his opponents head-on with better leverage due to a far lower center of gravity. This, combined with his
gung-ho attitude and scant regard for health and safety, often puts him in harm's way. He is known for his right underarm throw: the . After finishing third in the All-Japan Championship during his first year of high school, he leaves school and enters professional sumo via
sandanme tsukedashi, which allows him to bypass the height requirement. He joins Shibakiyama stable and uses his epithet as his . He reaches west
maegashira 3. ; : :A third year high school student at Odachi High and captain of its sumo club, and the only member of the club before Hinomaru joins. Known for his mental fortitude, Ozeki has great lower body strength. Despite being the most senior member of the team, he lacks actual match experience and has never won a real bout in five years. After high school he becomes a professional sumo wrestler affiliated with the Nagato stable so that he can face Hinomaru; if they were members of the same stable they would not be allowed to fight each other. He uses the . He reaches west
maegashira 16, and receives the Fighting Spirit
prize in the September tournament. ; : :A third year high school student and former Kanto regional
karate champion in junior high school, who is feared as the strongest at Odachi High. His delinquent actions had him expelled from his karate dojo and he led the group that took over the sumo club's dojo and destroyed Ozeki's meticulously prepared sumo ring. He takes up sumo after being humbled by Hinomaru's strength and hardworking attitude despite being smaller than everyone else, and aims to makeup for what he did to Ozeki. With his karate and fist-fighting background, he uses
oshi-zumō; pushing and thrusting. After reforming, his sensei welcomes him back into karate and trains him in techniques that supplement sumo. Despite his delinquency, he is among the top 30 students of his grade academically. He is the older brother of Reina. He continues sumo in university. In Part 2, he is studying medicine and apprenticing under Dr. Kanie. ; : :Second year student and last year's national wrestling champion, who is known for wearing a
lucha libre mask and nasal tape. He is the only member of the wrestling club as everyone else quit because he is too strict. He aims to become the best
mixed-martial artist and challenges members of other combat sports clubs to exhibition matches. He quits wrestling and joins the sumo club after conceding defeat to Hinomaru in a special match where each combatant followed the rules of their own sport. A phenom with great natural talent, he utilizes his wrestling background in sumo by performing throwing techniques. Academically speaking, he has the worst grades on the team. After his second year of high school, he goes to America to enter MMA. When he returns to Japan in Part 2, he is the champion of a small MMA promotion and a new single father. Chihiro also appears in Kawada's
Martial Master Asumi manga series, alongside his now-teenage daughter, . ; : :The newest and weakest member of the Odachi High sumo club, who was inspired to join after watching the match between Hinomaru and Chihiro. Small, physically weak and timid, he focuses on feints and negating opponent's momentum shifts in order to compensate for his disadvantages. In Part 2, he becomes more confident and is very popular with women. ; : :A first year student at Odachi High, who enters school and the sumo club late due to being in the hospital. He was an elementary school friend of Hinomaru's and was on his same level of skill when they trained together at the same dojo, but they have not seen each other in over three years. He moved away to be closer to a hospital and gave up on sumo. After seeing Hinomaru continue to defy his fate, Tsuji vowed to help his old friend. Despite retaining his skills from elementary school, he can only fight in 20-second bursts due to impaired lung function caused by a birth defect. Because of this, he becomes the coach of the Odachi High sumo team and not a wrestler. His technical knowledge helps train the club members' technique and core strength, and identify their weaknesses and how to compensate for them. When Hinomaru got injured in Part 2, Tsuji decided to leave high school and enter professional sumo, where his 20-second limit is less of an impairment since pros only fight once a day. Like Ozeki, he joined Nagato stable so that he can face Hinomaru. He uses as his , and reaches east
maegashira 17. ; : :Vice president of the student council and Miss Odachi High for the last two years. Like her brother Yuma, she initially views sumo as a weird sport and plans to disband the club if they can not recruit two more members for a team of five by the end of the two-day cultural festival. But after continually watching the team to support Yuma, she is inspired by their hard work and, when Chizuko asks to be the manager of the club, Reina becomes a co-manager alongside her. In Part 2, she is a third year university student. She also accepts her feelings for Hinomaru and, with help from all of their friends, they start dating. She becomes friendly with Jin'o's wife, Yumi, to learn the duties of a professional sumo wrestler's wife. ; : :First year student at Odachi High, she is saved by Hinomaru on the first day of school when he confronts a molester on the train. After the sumo club passes the preliminaries to enter the national tournament and earns respect at school, she becomes a co-manager of the sumo club alongside Reina. A quiet introvert, she was inspired by Hinomaru to change and develops a crush on him. In Part 2, she is a second year university student working as an assistant photographer for
Gekkan Sumo Dō magazine. At the end of the series she seems to have developed feelings for Saenoyama.
Ishigami High School ; : :A first year student at Ishigami High who is considered the ace of the team. He began sumo in junior high, where he was last year's champion, and is known under the epithet . He is recognized by Hinomaru as one of his rivals to become the best in Japan. Despite his aloof personality, his relaxed attitude helps him dodge attacks. His attacks rely on arm holds,
ottsuke, so nobody can touch his
mawashi, and he is so successful at it, that his mawashi is known for being spotless. In his third year, he was captain of the club and became high school yokozuna. As a professional sumo wrestler, he joined Minagawa stable and uses his epithet as his . He reaches west
maegashira 2, and receives the Technique prize in the September tournament. ; : :A third year student at Ishigami High and captain of its sumo club. tall and with several scars on his forehead and lip, he is nicknamed "Hercules" due to his strength and muscular physique. He has a serious personality. His favorite grip is
migi-yotsu; right hand inside on his opponent's mawashi. ; : :Third year student and member of the Ishigami sumo club, he wears glasses and has noticeable freckles on both cheeks. Although appearing polite to outsiders, he can be intimidating to his teammates as he was formerly the strongest delinquent at the school. He falls into the background around Sada and Kanamori, but he too is good on the national level. He is not above confusing his opponents with intentional false starts. ; : :A first year student of Ishigami High, with a history of delinquency, and a member of its sumo club. He was last year's national
judo champion in junior high school, and like Chihiro, aims to become the best mixed martial artist. ; : :A second year student at Ishigami High, he is the heaviest member of their sumo club. At and he is described as being as immovable as a mountain. He specializes in grabbing, lifting and throwing his opponents by their mawashi. After the Chiba preliminaries of the Inter High Tournament, Mamiya becomes the new captain of the club.
Eiga University High School ; : :First year student at Eiga University High School and son of Yamatokuni, the last Japanese-born yokozuna. He stands , has very long hair that reaches down to his lower back, and was given the epithet National Treasure, , but has not fought in the last six years due to his father's orders. During his first tournament in his fourth year of elementary school, he seriously injured his opponent, so his father forbade him from competing so as not to smother out any young promising stars. Sōsuke is signed up for the Kantō region's newcomer tournament against his will by Shun. Although he plans not to partake, after seeing Shun's match against Hinomaru, Sōsuke's desire to compete is awakened again and he wins the tournament. He enters professional sumo right after winning the Inter High individual tournament, leaving high school in his first year to join his father's stable under the . In Part 2, he reaches east
ōzeki. ; : :First year student at Eiga High, where he is the shortest and lightest person in the sumo club. He is Sōsuke's childhood friend and the one whom Sōsuke severely injured six years earlier. He enjoys trash-talking, and in junior high school was the lightweight champion and in the top eight of the open-weight class. He admired Yamatokuni and originally used the same head-on yokozuna-style of sumo, but unlike fellow small wrestler Hinomaru, Shun abandoned it for a more technical and agility-based style when his small stature prevented it from being effective. He gets low and inside his opponent's guard at the initial charge and gets them off-balance. He detests Hinomaru for being able to continue to use the style that he had to give up. In Part 2, he quit sumo due to injuries and is manager of Eiga University's sumo club. ; : :Third year student at Eiga High and Chihiro's older brother, who has been practicing sumo for two years. He has long hair and a horizontal scar across his nose. When their parents divorced while they were in elementary school, Chihiro was raised by their mother and Masato was raised by their father. He is extremely capable at anything he puts his mind to, but his loud mouth and unpredictable behavior makes him seem like an idiot. His favorite pastime was to take up any activity Chihiro did, become better at it than him, then abandon it to try something else. But he fell in love with sumo after taking part in a match and being defeated. As a professional sumo wrestler, he joined Minagawa stable and goes by the . He reaches east
maegashira 4. ; : :Third year student at Eiga High, and captain of the sumo club. He stands , and weighs . Despite his imposing size, he is a soft-spoken person who complains a lot. As a professional, he joined Asahigawa stable and reached west
makushita 44 in Part 2. ; : :Second year student at Eiga High, an exchange student from
Bulgaria. At , he is the tallest member on the team. When he first came to Japan he was a weak wrestler, but he began to excel when Sōsuke joined the club; having initially taken up the sport after watching his father Yamatokuni compete. As a professional, he joined Yamatokuni stable and reached west
makushita 1 in Part 2.
Tottori Hakurou High School ; : :Third year student at Tottori Hakurou, captain of its sumo club, and the high school yokozuna for the last two years. Undefeated since entering high school, he is known under the epithet of . He is also the winner of last year's All-Japan Championship, which includes high school and university students and business men. Hinomaru looks up to and admires him, even having imitated some of his moves. In elementary school Tennoji was on the smaller side and polished his techniques to overcome this, but in junior high his body grew; thus he possesses both a high level of technical skill and the natural advantages of a large physique. He also thoroughly studies all of his potential opponents. After winning the All-Japan Championship in his last year of high school, he enters professional sumo via
makushita tsukedashi. He joined Nagato stable and uses his epithet as his . In Part 2, he reaches west
ōzeki. After suffering his second loss of the September tournament to Hinomaru, he withdraws on day 9 due to injury. However, he re-enters on the 12th day. He is the one to call a
mono-ii during Kuze and Jin'o's final bout, which results in an overturned decision and the need for a playoff. ; : :A former student of Tottori Hakurou and Eiga University and former member of both schools' sumo clubs. He is known under the epithet of . His father is the coach of Hakurou's sumo club. He attended college at Eiga University and was a member of its sumo club alongside Yuma. As a professional sumo wrestler he uses his epithet as his and joined Asahigawa stable, where he is the only one brave enough to stand up to the yokozuna when he does something unbecoming of his rank. In high school he was content at being number two behind Tennoji, but he has since rid himself of this inferiority complex. He reaches east
maegashira 2, and receives the Fighting Spirit prize in the September tournament. ; : :Student at Tottori Hakurou High who went to the same junior high school in Osaka as Tennoji, where they were both members of the sumo club. When he was about to quit the club due to his lack of skills, Tennoji noticed his strong wrists, unique frontal defense and quick recovery from taking a fall due to Enoki's brief background in
aikido. Tennoji suggested Enoki further pursue aikido and utilize it in his sumo, which he did. ; : :Nicknamed "Bat", he is a first year transfer student from
Mongolia. He has trained in
Mongolian wrestling since he was 6 years old and won a
Naadam before moving to Japan. He joined Shibakiyama stable and is known under the . In Part 2, he is ranked in the
makushita division and wins its September tournament. ; : :Manager of the Tottori Hakurou sumo club and younger sister of Shido. She often hangs out at Shibakiyama stable on her days off, and met Hinomaru there during his trial-run. After witnessing his skill, she becomes overly eager to see how he will perform against her brother in the tournament; with the implications that she now has feelings for him. In Part 2, she is studying to become a sumo reporter.
Shibakiyama stable ; : :The stablemaster of Shibakiyama stable, he is a former
sekiwake known for the intense training at his stable. When he was active under the , he once obtained a
kinboshi for defeating Yamatokuni. He is a former student of Shunkai, and was known as an undersized and aggressive wrestler with a straight-on style, just like Hinomaru. He and his stable train with Odachi High, and he offers to let Hinomaru join the stable when he is ready to go pro. ; : :The west
maegashira 9, he is the strongest member of Shibakiyama stable. He is known for his flexible limbs and one-punch takedowns. He fights with a '
be like water' mantra, to adapt and then deal decisive blows. Went pro after junior high school. After struggling against the foreign wrestlers for years, he reaches west
sekiwake in Part 2. He is the wrestler who gives Jin'o his first loss of the September tournament, and receives the Outstanding Performance prize. ; : :A sumo wrestler of the Shibakiyama stable. He took third in the Kantō region's newcomer tournament three years ago. He goes to watch Odachi High compete in the Chiba preliminaries of the Inter High Tournament alongside Shibakiyama. In Part 2, he has gained a lot of weight and is ranked in
sandanme.
Other characters ; :A reporter for magazine. She has a lot of knowledge about sumo and a particular interest in Hinomaru's generation of National Treasures. She attends every tournament with her photographer co-worker , who can gauge a wrestler's strength just by looking at them through the viewfinder of his camera. In Part 2, she is instead accompanied by fellow journalist Koshinaka. ; : :Real name , is a retired yokozuna and Shibakiyama's former coach. After retiring he coached two wrestlers up to yokozuna rank, but left the sumo association. At Shibakiyama's request, he trains Hinomaru to strengthen his new finishing move, but has a harsh and unorthodox training regimen that he refuses to explain. After the Inter High tournament, Shunkai was inspired to get back into the sumo world, but because he already left the sumo association he has his former student start a stable and invites many of the top high school wrestlers to join. In Part 2, he is dying from ill health and as his last wish asks Hinomaru to defeat Jin'o in the September tournament. ; : :A second year student at Kanazawakita High School and younger brother of current
ōzeki Daikeishō, the highest-ranked Japanese sumo wrestler. Rude and cocky, he looks down on his brother as he believes he has given up on becoming a yokozuna. He is tall and is known for his powerful palm strikes. He is known under the epithet and uses it as his in his professional sumo career. In Part 2, he reaches east
komusubi. ; :A yokozuna from Mongolia with a large scar from his forehead down over his left eye, who is hailed as the greatest sumo wrestler of all time. Although his conduct has occasionally been criticized as unbecoming of a yokozuna, he feels this, and the belief that his accomplishments are not as remarkable due to taking place in an era of weak competition, is discrimination from the Japanese because he is a foreigner. After winning his 44th championship in Part 2, he voices disappointment with the National Treasure generation and tearfully claims he will retire if he wins the next tournament, rather than let the young wrestlers wait to beat him as he declines due to age. Jin'o seems to have multiple personalities, each corresponding to a different emotion, and the series depicts these Jin'os having discussions with each other in his head. ; :One of the
Three Great Spears, who are of the same generation as the National Treasures, but went professional after junior high school. He is a part of Yamatokuni stable and is known for having the best headbutting skills. ; :One of the Three Great Spears, who are of the same generation as the National Treasures, but went professional after junior high school. A member of Mishima stable, he is half-Japanese and half-British. He has a reputation for being cruel and only cares about rank, being suspected of intentionally injuring Kaorumaru during the Gifu training camp. However, he immediately shows respect to Ozeki after seeing his talent and claims he is only cruel to talentless people who do not know when to quit. ; :One of the Three Great Spears, who are of the same generation as the National Treasures, but went professional after junior high school. He is a very tall wrestler known for his technical skill and flexibility. Instead of going on the Gifu training camp, he trains with fellow
sekiwake Saenoyama. ==Production==