Genre: Shōnen, Parody, Surreal Comedy


Author: Yoshio Sawai
Publisher: Shueisha
English Publisher:
Demographic: Shōnen
Magazine: Weekly Shōnen Jump
English magazine:
Original run: September 2008, November 2008
Volumes: 1

Chagecha (チャゲチャ) is the first original series Yoshio Sawai created after Shinsetsu Bobobo-bo Bo-bobo. It contains much of the same style of humor as Sawai's previous works, though not quite as extreme as Bo-bobo. Its final chapter was published November 1, 2008, just two months after it began.

Plot Edit

In the city of Gure-Tokyo, yankees (delinquents) are running wild. With only 0.2% of teachers left in the schools and no one willing to stop them, these bad kids can do whatever they want whenever they want. And now, as tensions between the city and the delinquent populations are rising to such a degree that its even being called the “Gure-Tokyo Dispute”, they’re about to go down as legends…

But then, right out of know where, a mysterious man known as Chagecha arrives. His goal is to rid the city of yankee control and stop this chaos once and for all.

Summary Edit

After Shinsetsu Bo-bobo, Sawai wrote a short story for the Weekly Shonen Jump known as Black Owl (黒梟, Kuro Fukuro).  This turned out to be the beginning concepts of Chagecha, which started publication in the Weekly Shonen Jump on September 13, 2008.

In Chagecha, the city known as Gure-Tokyo is suffering a delinquent crisis. These delinquents (known as yankees) have overthrown nearly all the school districts, essentially turning them into bases for their criminal gangs, and now have the city at their mercy. But these aren’t your normal hoodlums by any means… Yankees who have spent enough time living a life astray from society eventually develop powers known as "Yanki", and can use these at will. 

When a man named Chagecha shows up possessing a powerful Yanki and begins putting some of the lowly yankees into place, word of his name begins to spread. He meets a kid named Masato, who has heard of his fights against the yankees and wants to help him free the city of their control. After the stunning defeat of the infamous Guerrilla High, Masato firmly believes Chagecha could bring his school, Gekiatsu High, back to its former glory. Eventually, Masato takes Chagecha to Gekiatsu High where he meets the school's highest ranking members: Kawai Himawari, Washio Kouzan, Wakana Kotarou, Zenkaiten Doraji, Longhorn Onizawa, and the group leader Mysterious Tiger Mask. After testing his strength, they welcome Chagecha into the group. However, during Chagecha's welcoming party, they are attacked by Metro Sekiranun High, a high ranking and vicious Yankee School. They are challenged to a Rank Battle on a Yan-Battlefield, where the highest ranking members of two opposing schools battle it out to increase their school's rank. After a long and grueling fight, Gekiatsu High comes out victorious, bringing it from a Gutter-Grade school to a solid B-Grade school. The final chapter ends with the news that, since Gekiatsu has become so known after the defeat of Metro Sekiranun, Yankee Schools all over Gure-Tokyo have sent letters wanting to challenge them. The final scene sees Chagecha and the rest walking with their backs to the audience, and judging by the silhouettes of four figures on the structure ahead of them, presumably on to their next challenge.

While the series was meant to go on much longer than it did, it was cut short due to poor ratings. The reception of Chagecha was mostly negative with many readers saying that it was either too similar to Bo-bobo, or that it was simply uninteresting. It seems that, after Shinsetsu Bo-bobo, the majority of Japanese Jump readers weren’t ready for another crazy series by Yoshio Sawai, and thus Weekly Shonen Jump quickly canceled it after it’s 8th chapter (which Sawai humorously wrote as the “∞th" chapter).

Terms Edit

Gure-Tokyo Edit

(暮東京)/Stray Tokyo: A large city that is overrun with delinquents. It has become wracked with crime and violence.

Yankee School Edit

(人間川流し): Schools that have become completely controlled by yankees. They act more as gang headquarters than places of education.

Yanki Edit

(ヤン気ー): Powers that yankees naturally develop when they have achieved a high rank and/or have spent enough time living a life astray from proper society. Yanki can be physically seen on subjects who have it, as it manifests itself as a glowing aura around the individual (the larger the aura, the stronger it is). Each person’s Yanki is different, from the way it is earned to how it is used, and even down to the color and smell. 

Yan-Deadly Technique Edit

(ヤン必殺技): Special moves that are preformed using Yanki. Individuals who have Yanki can use these, and each one is different depending on the person and their skill level.

Yanki-Fusion Edit

(極ヤン気ー): A fusion of two individual's Yan-Deadly Techniques which can only be used if both users recognize each other’s strength. 

Rank Edit

Ranks are earned by both individual students and schools. Student ranking is based on year and “Yanki skill level” (as opposed to academic strength), while school ranking is based on how many Rank Battles have been fought and won against. School rank ranges from A-Grade (the highest) to Gutter-Grade (the lowest). There is also a division of Yankee Schools that surpass A-Grade and are defined as "Super A-Grade". The four schools who have achieved this status are known as the Four Great High Schools of Gure-Tokyo.

Rank Battle Edit

(ランク戦): Yankee Schools need to participate in rank battles in order to achieve high ranks and become more recognized. This involves gathering the top members of each school to participate in a team vs. team match, and fighting in an enclosed area known as a “Yan-Battlefield”. A Rank Battle is concluded when one team has defeated all the members on the other team.

Yan-Battlefield Edit

Places where Rank Battles are fought. They are areas of the city enclosed by tall fencing, and are filled with hidden weapons participants can find and use during the fight.

Main Characters Edit

Chagecha Edit


(チャゲチャ): The main character. He has red hair done in up in dread locks, scars on both sides of his nose, glasses, and wears a white suite and hat. He's a 3rd-year in highschool and former student of Gekiatsu High, and lives in a cigarette vending machine outside of a convenience store with a rent of ¥85,000. He has a innate sense of justice and has come back to the city of Gure-Tokyo after 2 years to rid it of the yankees. The life he lives is one on the edge, often taking big risks that could easily land him dead, but his cool and collected personality allows him to keep going even in such situations. He also uses the element of surprise against his enemies, usually acting in unexpected ways to throw them off.

Attacks: Edit

  • Backfist of Sadness: Chagecha backhands an opponent with so much force, they are sent flying.
  • Yan-Deadly Technique: Human Bike (人間自動二輪): Chagecha exerts pressure on his heart to push his physical ability to its maximum capacity. Just like his lifestyle, this move is incredibly risky to use as it requires life energy to preform.
  • Yanki Release: Chagecha releases a burst of powerful aura that causes, damage to nearby opponents.

Masato Edit


*Note the typo

(マサト): A 1st year in Gekiatsu High who met Chagecha on the train, and the two decided to work together. He has blond, spiky hair that's similar to Heppokomaru’s from Bo-bobo, wears a flannel shirt with the sleeves rolled up, and black pants. He admires Chagecha and considers him as a role model, even if some of the crazy stunts he pulls leaves him reeling with shock and confusion.

Kawai Himawari Edit


(河合ヒマワリ): A 1st year in Gekiatsu High and one of their strongest members. She has her ginger-colored hair in pigtails and wears the typical Japanese "sailor style" school girl uniform. She is incredibly cold and stubborn and doesn’t like to be helped by others. She especially doesn’t like Chagecha and was very reluctant about him joining their group in Gekiatsu High. However, she does care about him and all her friends, even though it doesn’t seem like it.

Attacks: Edit

  • Yan-Deadly Technique: Mach Series (マッハ系): Himawari can swing ball-and-chains (including the ball-and-chain strap on her phone) at her opponents with extreme force.

Washio Kouzan Edit


(鷲尾甲山): A 2nd year in Gekiatsu High and one of their strongest members. He has shaggy hair that hangs over his eyes, and wears a very similar outfit to Masato, but with a black shirt and sleeves that aren't rolled up. He has the most responsibility in the group even though he’s not the leader, and looks after everyone. He’s also the only who can stop Wakana Koutarou once he goes into Runaway Mode.

Attacks: Edit

  • Yan-Deadly Technique: Sword Series (剣系): Kouzan draws two fighting staves and slashes his opponents with them.

Mysterious Tiger Mask Edit


(なぞのタイガーマスク): A 108th year in Gekiatsu High, and the self appointed leader of the strongest members. He is a spherical orange creature with arms and legs who wears a tiger mask that covers most of his body. He looks more than a little similar to the character Don Patch from Bo-bobo, and Chagecha even becomes suspicious of this at one point.

Wakana Kotarou Edit


(若菜濃太郎): A 1st year in Gekiatsu High and one of their strongest members. He has short black hair and wears a black shirt and pants complete with a belt, and a mask on the side of his head. He was one of the Six Great Yankees in middle school.

Attacks: Edit

  • Runaway Mode (暴走モード): When he becomes angered, his eyes change color and he enters a state called "Runaway Mode”. While in Runaway Mode, Kotarou attacks anyone around him regardless of weather they are an ally or not. They only one who can stop him is Washio Kozan by chanting “nekojara” three times.

Zenkaiten Doraji Edit


(全開天ドラ次): A 1st year in Gekiatsu High and one of their strongest members. He has spiky green hair and wears a similar outfit to Masato's, only with two belts and straps on either side of his pants. He’s 9 years old and was in 3rd grade before being transferred to Gekiatsu because of his immense power. Despite having the power of an elite yankee, his lack of experience and self-centered attitude make him unable to use it at its fullest capacity, often failing spectacularly while trying to do so. He strikes a rivalry with Chagecha and is always trying to outdo him.

Attacks: Edit

  • Great Yanki Opening: Early Morning Hemorrhage Service: In an attempt to test Chagecha, Doraji tries to showcase the true power of his Yanki. He surrounds himself with a massive storm of energy, but is unable to sustain it and is launched skyward.
  • Yan-Deadly Technique: Me-System (オレ系): Doraji summons a slot machine in his mind, and lets this determine his attack. The only attack that he preforms using this is called “Slots Cat Shamoji”, where he dons a cat costume and hits the enemy using three shamoji (しゃもじ), or rice paddles.

Longhorn Onizawa Edit


(ロングホーン鬼沢): A 1st year in Gekiatsu High and one of their "strongest members". He is a strange, horned, heart-shaped creature with a chiseled face and cannons on his back. He wears triangle shades and shoulder pads. Despite how serious he looks, he’s actually extremely cowardly. He runs away from every fight, often pleading for his friends to help him. Despite his inability to keep any sort of composure in heated situations, he still tries to help his friends out by using the cannons on his back to fire wet towels.

Rabbit Edit


(ウサギサン, Usagi-san) A seemingly normal rabbit who goes to Gekiatsu High. It seems to have some sort of relation to Longhorn Onizawa, although it’s unknown as to what. Whenever Onizawa is in need of encouragement, or sometimes just because, it makes a statement about the nature and struggles of rabbits. Though, these often conflict with the cautious and herbivorous nature of actual rabbits, much to the confusion of others (especially Masato).

Yankee Schools Edit

Gekiatsu High Edit

Once one of the Four Great Highschools of Gure-Tokyo, it became a Gutter-Grade school and was constantly being pushed around. Gekiatsu High has had rough past; 2 years earlier, a war know as the Great Exploding Yankee War occurred, in which Gure Tokyo was thrown into total chaos as Yankee Schools began clashing for territory and authority. Nannrei Saijukan High attacked Gekiatsu and rounded up all of the upperclassmen, throwing them into the mouth of Mt. Fuji where they were baked alive. 1 year earlier, Sugiyama, the leader of Gekiatsu’s only resistance was killed by Nannrei Saijukan’s president, Kabu Kintamarou. As of the end of the series, Gekiatsu High is now a B-Grade school.

Notable Members Edit

Kurosawa Houfukurou Edit

(黒澤ほうふくろう): The principal of Gekiatsu High. He first appeared in the short story, Black Owl (黒梟).

Hatoyama Technical High Edit

A high school for pigeons. It was attacked by Guerilla High just before Chagecha showed up, and its forces were far too much for Hatoyama Technical to handle.

Notable Members Edit

Hatoyama Poporou Edit

(ハト山ポポ郎): The 3rd year president of Hatoyama Technical High, and a friend of Chagecha. He was mortally wounded during Guerilla High's surprise attack on their school, and died shorty after Chagecha arrived on the scene.

Guerrilla High Edit

A brutal Yankee School that houses roughly 200 delinquents. Before being defeated by Chagecha, they had a lot of authority in the area; yankees from Guerrilla created a law that allowed them to send good, non-yankee students down the Human Current, a river that runs through Gure-Tokyo. No student they sent down the river has ever returned alive.

Notable Members Edit

The Dragon Ninjas Edit

(ドラゴン忍者): A powerful division of Guerrilla’s yankee forces that invaded a moving train and were subsequently defeated by Chagecha.

Morikyo Oreo Edit

(森清オレオ): The 3rd year president of Guerrilla High. He was once a normal human being, but became nothing but a giant face with countless robotic limbs to enhance his power. He has the ability to fire a laser cannon from his mouth.

Ushirokaminaga High Edit

A Yankee School whose members are known for their long back hair (which is also what the school is named after). The convenience store that Chagecha lives right outside of was once part of their territory before he “remodeled" the statue that Ushirokaminaga had erected in the parking lot.

Kadorai High Edit

A B-Grade Yankee School whose members are known for their ducktail haircuts.

Notable Members Edit

Urakasuya Koji Edit

(裏粕谷コウジ): A 3rd year at Kadorai High. He is greatly respected by his fellow students, and greatly feared by most other yankees. Like most other yankees, he possess very little respect for Gekiatsu High and often uses students from Gekiatsu as pashiri (パシリ) or “gofers", someone who runs errands for someone else. His Yan-Deadly Technique consists of drilling into an opponent with his whole body.

Yasai High Edit

A Yankee School whose members are known for their afros.

Notable Members Edit

Akapiman Kenichi Edit

(赤ピーマ健一): A 2nd year at Yasai High. He is a red bell pepper with a pompadour haircut. His fighting abilities are unknown as he was quickly incapacitated in a fight with Urakasuya Koji.

Jigeyama Commerce High Edit

A B-Grade Yankee School that controls an arcade/game center that was once part of Gekiatsu High's territory.

Notable Members Edit

Strappa Kurimoto Edit

(ストラッパー栗本): A 3rd year at Jiageyama Commerce. He has a formidable and high-class appearance, and is shown to be ruthless as well. He also has a hobby of collecting phone straps, as seen by the string of phone straps that trails behind him. It supposedly took 10 years for him to have such a collection, which is reflected by the fact it stretches from Japan all the way to America.

Attacks: Edit

  • Yan-Deadly Technique: Hand Stun Gun (ハンドスタンガン, Hando sutan gan): Kurimoto makes a hand gesture like that of the “ILY” hand sign which causes his opponent to freeze in place, allowing him to deliver an electric shock like a taser once his hand makes physical contact with them.

Nannrei Saijukan High Edit

A Super A-Grade Yankee School and one of the Four Great High Schools of Gure-Tokyo. It rose into power during the Great Exploding Yanki War when it defeated Gekiatsu High, solidifying it as one of the most powerful Yankee Schools.

Notable Members Edit

Kabu Kintamarou Edit

(華部金玉郎): The 3rd year president of Nannrei Saijukan High. He’s responsible for murdering Sugiyama, thus causing Gekiatsu to become a Gutter-Grade school, and for bringing his school into its current power. Because of this, he has won the hearts of many yankees all throughout Gure-Tokyo, and was even sent congratulatory letters from all of the worlds leaders once he was elected as Nannrei Saijukan’s new president. His goal is to issue a law called the “Yankee Exile” method, which allows him to permanently exile all yankees who oppose him and his school’s name from the city.

Attacks: Edit

  • Yan-Deadly Technique: Eiffel Murder: The attack Kintamarou used to kill Sugiyama. It involves swinging his opponent around with great force until finally throwing them directly at the Eiffel Tower. Because of the dangerousness and lethality of this technique, it's since been banned from the 2008 Yan-Regulations.

Nannrei Saijukan High Special Intelligence Reporting Corps. [TAKA] Edit

A special division of Nannrei Saijukan’s yankee forces. It’s composed of a string (a literal string that goes up the side of the school) of yankees who deliver current information to Nannrei Saijukan via passing the information they receive on to the next one in line until it reaches headquarters. 

Metro Sekiranun High Edit

A B-Grade Yankee School known for capturing students from opposing schools and using them as weapons. They were sent by Kabu Kintamarou to destroy both Gekiatsu High and Chagecha. They were then defeated 7-0 in a Rank Battle against Gekiatsu.

Notable Members Edit

Little DJ Yamauchi Edit

(リトルDJ・山内): The head of Metro Sekiranun High. Although he belittles Gekiatsu and even weaponized its own students just to make Metro Sekianun’s presence known, he still sent Chagecha a polite and well worded letter requesting him to fight them.

Attacks: Edit

  • Yan-Deadly Technique: Chain Series (チェーン系): Yamauchi’s hair becomes segmented with chains which he can then use to attack the opponent or cause destruction to the surround area.

Jealousy Tsuchida Edit

(ジェラシー土田):  One of Yamauchi’s colleagues. A fairly generic looking, spiky-haired yankee. He’s knocked down by Himawari at the beginning of the Rank Battle.

 ??? (Unnamed Colleague #1) Edit

One of Yamauchi’s unnamed colleagues. He looks like Frankenstein’s monster. He gets angry when Himawari attacks Jealousy Tsuchida, but is then interrupted by Kouzan’s Yan-Deadly Technique.

Attacks: Edit

  • Yan-Deadly Technique: Cone Series (コーン系): He uses traffic cones to both attack and defend.

 ??? (Unnamed Colleague #2) Edit

One of Yamauchi’s unnamed colleagues. He is a robot with a jetpack on his back. He attacks Chagecha from under water while he’s being constricted by Yamauchi’s Yan-Deadly Technique. He is later defeated by Doraji.

Attacks: Edit

  • Yan-Deadly Technique: Water Series (水中系): He uses various water based attacks on the opponent.

 ??? (Unnamed Colleague #3) Edit

One of Yamaguchi’s unnamed colleagues. A yankee who wears round sunglasses and has a long nose. He’s seen at the beginning of the fight, but isn’t focused on until sometime later where it’s implied Washio Kouzan had fought him off screen.

Filler Numbers Edit

(数合わせ, Kazua wase):  Two nondescript yankees with “数合わせ” as their faces. As their names imply, they’re just there in order to fill in the numbers (as the Rank Battle is 7 vs. 7). They beat up Longhorn Onizawa until they are intimidated by Wakana Kotarou's Runaway Mode, and chicken out of the fight.

Zaiyoukai High Edit

An powerful A-Grade Yankee School that has connections with Nannrei Saijukan High.

Notable Members Edit

Tsurugi Tomoko Edit

(剣トモコ): She is a friend of Kabu Kintamarou, and an extremely powerful yankee. Little else is known about her, as she is only ever seen at a lunch meeting that Kintamarou held.

Science Saimei High Edit

An powerful A-Grade Yankee School that, like Zaiyokai High, has connections with Nannrei Saijukan High.

Notable Members Edit

Piyoppi Edit

(ピヨッピー): Another friend of Kabu Kintamarou who was also seen at his lunch meeting. Although he seems to be nothing more than a normal little chick at first glance, he is actually a frighteningly powerful yankee. However, it is unknown to how powerful he truly is, as he too is only seen at the lunch meeting.

Trivia Edit

  • Chagecha is the shortest running series in the history of Shonen Jump.
  • There are various references to Bobobo-bo Bo-bobo seen throughout Chagecha: In the opening page, Don Patch and Dengakuman are seen among some yankees, Ushirokaminaga's remodeled statue bears an exact likeness to Don Patch, "Hanage Shinken High" is listed on a chart of yankee schools as a B-Grade school, and of course, the entire character of the Mysterious Tiger Mask.
  • Due to these many blatant references to Bo-bobo, it's possible that the city of Gure-Tokyo exists in the same world as the one Bo-bobo takes place in.


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