Shirahama Kenichi is a book lover who has just entered high school, but he is often bullied by others. One day, he became good friends... more>> with the new transfer student, Fuurinji Miu, who was also looking for a friend. Kenichi was shocked at how powerful she is at first, but he is still somehow attracted to her... <<less

Once the bullies target you, it’s game over. The school is run by tyrants whose favorite hobby is tormenting the weakest kids in class. But... more>> then Gray arrived. This mysterious new student threatens to dismantle the established order. He may be small in stature, but his calculative and brutal fighting leaves unsuspecting opponents lying on the floor begging for mercy. Now the school's toughest bullies have to scramble to take down this new and unusual hero. (Source: WEBTOON) <<less

Otokojuku - a private school for juvenile delinquents that were previously expelled from normal schools. At this school, Japanese chivalry is taught through feudal and... more>> military fundamentals. Similar to an action film, the classes are overwhelmed by violence. Only those who survive it become true men. <<less

He's short, weak, and has just transferred to a new school. Kurumatani Sora is the main character in this story who loves basketball. He has... more>> been shooting hoops ever since he was little and has been trying to grow tall just like his mother, who "used" to be a basketball player. What happened to her and what Sora will do at the new school is all up to you to find out! <<less

Two boys, Mitsuhashi Takashi and Itou Shinji, meet each other at a salon. It turns out both boys are transferring to a new school and... more>> decide to take the opportunity to reinvent themselves. No longer will they be run of the mill high school students, they will become the biggest delinquents Japan has ever seen! <<less

Ishiyama High is a school populated entirely by delinquents, where nonstop violence and lawlessness are the norm. However, there is one universally acknowledged rule—don't cross first year student Tatsumi Oga, Ishiyama's most vicious fighter.... more>>

One day, Oga is by a riverbed when he encounters a man floating down the river. After being retrieved by Oga, the man splits down the middle to reveal a baby, which crawls onto Oga's back and immediately forms an attachment to him. Though he doesn't know it yet, this baby is named Kaiser de Emperana Beelzebub IV, or "Baby Beel" for short—the son of the Demon Lord!

As if finding the future Lord of the Underworld isn't enough, Oga is also confronted by Hildegard, Beel's demon maid who insists he take responsibility as Beel's guardian. Together they attempt to raise Baby Beel—although surrounded by juvenile delinquents and demonic powers, the two of them may be in for more of a challenge than they can imagine. <<less

Basically, this manga follows Hibino Hareluya as he tries to "conquer the world" by dealing with the everyday punks on the street. Always ready to... more>> fight and always winning his fights, he just finds himself in more and more trouble. Along the way he surrounds himself with friends who are all very strong in their own unique way. <<less

Six minors (16 - 17 years) answering to the nicknames of Joe, Mario, Suppon, Baremoto, Heitai, and Kyabetsu are put into a reformatory for offenses such as aggravated assault, swindling, flight, etc.... more>>

Their stay in hell begins immediately. Accommodated by a doctor pedophile, they are placed under the watch of a despotic and brutal crew. Cellmates with a certain Sakuragi (called Anchan), the tension rises between the band of buddies and their new "friend."

A brawl breaks out, and our six prisoners are done rossés by the mysterious young man, thanks to his boxing talent. The story will not only follow the lives of these seven characters surviving in their hellish environment, but also their disillusions due to the rejection by the outside world and by their close relations. This is about the extraodinary and invincible friendships between these young men.

Note: Won the 2005 Shogakukan Manga Award for the seinen/general category along with . <<less

The series began as a fairly humorous and lighthearted satire of Japan's teenage delinquent-gang subculture told from the perspective of Matsushita Tadashi (who also narrates these early Karate Bu stories), a 2nd year student at Kangokou High and a constant target of Kangokou's numerous bullies who beat him up routinely after school. He is almost always accompanied by his best friend Saitou Takaki, who is also constantly harassed. As the pair grow increasingly tired of being victimized they decide to join the titular Karate Club, which is notorious throughout Osaka's youth gangs for training and producing the city's most hardened and toughest teenage thugs while maintaining the facade of a legit school sports club. But... more>> when they join the club, they find themselves picked on just as much if not worse by the club's current members. But as the story progresses they grow to be increasingly capable fighters.

As the series went on it gradually changed its tone to a more serious and violent martial arts manga, with the narrative shifting from the perspective of Matsushita to Takagi Yoshiyuki, the smart mouthed, tough-as-nails captain of the Kangokou Karate Club.

Along with the manga's change in attitude and central character, the various teenage fighters throughout the series grew increasingly stronger and even began to tap into superhuman ki abilities, putting Osu!! Karate Bu in the company of other similar epic Shōnen fighting manga such as Yu Yu Hakusho, Dragon Ball, and Fist of the North Star.

Osu!! Karate Bu was wildly popular in its native Japan, but is otherwise almost completely unknown in most other countries. It spawned a four episode OVA mini-series released over a period of two years from 1990-1992, a 1990 live action movie, and a 1994 Super Famicom fighting game. <<less

Tousuke Rokudou is a loser, and everyone knows it. He gets picked on at school, gets snide looks from passersby, and can only muster up the courage to complain in secret with his equally hapless friends. Looking to turn his life around, he desperately uses an ancestral artifact passed down in his family for generations: a scroll that is capable of subduing all demons. However, in the modern age, it has a different effect: it makes all bad girls fall in love with him.... more>>

...And then, things go ballistic when he meets the delinquent beast-on-a-girl's-body Ranna Himawari, who hopelessly falls deep for him.

See Rokudou traverse through a school life filled with delinquents, turf wars, backstabbing, and as the song goes, "Everybody Was Kung Fu Fighting"!!! <<less

Misaki Hayato returns to his hometown and enrolls in the same high school as his two childhood friends. A lot has changed in the years... more>> he has been gone, his former best friends are seemingly distant from each other and leading relatively normal high school lives. Hayato's sudden arrival soon changes that and sends shockwaves through the entire town's delinquent population with his willingness to do anything for his friends and his love for a good fight. <<less

Watching the news, Takemichi Hanagaki learns that his girlfriend from way back in middle school, Hinata Tachibana, has died. The only girlfriend he ever had... more>> was just killed by a villainous group known as the Tokyo Manji Gang. He lives in a crappy apartment with thin walls, and his six-years-younger boss treats him like an idiot. Plus, he's a complete and total virgin … At the height of his rock-bottom life, he suddenly time-leaps twelve years back to his middle school days!! To save Hinata, and change the life he spent running away, hopeless part-timer Takemichi must aim for the top of Kanto's most sinister delinquent gang!! <<less

Maeda is a new student in the Teiken High School. He stutters when he's nervous and he's rather clumsy. He gets noted immediately because he hits a teacher during the entrance ceremony. Some clubs search to enlist him as they see in him a force they can use to get even with other clubs. But Maeda is a loner and has only one dream: becoming boxing champion. His first objective is to beat the leader of the boxing club. "Rokudenashi" translates as "good for nothing".... more>>

The manga focuses more on gang warfare than boxing. <<less

Class troublemaker Ryu Yamada is already having a bad day when he stumbles down a staircase along with star student Urara Shiraishi. When he wakes... more>> up, he realizes they have switched bodies—and that Ryu has the power to trade places with anyone just by kissing them! After figuring out the workings behind this new and amazing ability, Ryu and Urara take full advantage of the situation to improve their lives. But with such an oddly amazing power, just how long will Ryu and Urara be able to keep their secret under wraps? <<less

Geonu Dan has vowed to overthrow the status quo of the dysfunctional high school he recently transferred to, where rich and powerful third-generation chaebol heirs... more>> call the shots and gambling runs rampant. But does Geonu have what it takes to beat the odds, defeat the Taekyeong Oh Family, and restore law and order to his high school? <<less

She's a second-year high school student with a single all-consuming question: Will the boy she likes ever really notice her? He's the school's most notorious juvenile delinquent and he's suddenly come to a shocking realization: He's got a huge crush, and now he must tell her how he feels.... more>>

NOTE: Chapter 232 is actually 231. It was a mistake, there were two 191 published. <<less

It is a divine ritual, a martial art, a combat sport—it's sumo!!... more>>

A "small" new student, Ushio Hinomaru, appears before the weak little sumo club of Oodachi High School! The words "big" and "heavy" are the rules to this sport, which does not fit this newbie any inch, but this guy goes and does what...!?

Ushio and the small sumo club climbs its way to the top!

The goal is *Hinoshita Kaisan!

A fired up high school sumo tale—no retakes allowed!!

*Hinoshita Kaisan - A title for the highest rank in professional sumo, equivalent of Yokozuna. <<less

Fukatsu Michitaka, a boy who just became a high school student, can't differentiate people at all because of his prosopagnosia (face blindness). However one day... more>> he runs into a girl whose face looks completely different than the rest. So in order to cure his illness and accomplish his dream of becoming "normal," he starts to get close to her. <<less

Kazama Kenji likes to believe he is something of a delinquent. Moreover, others seem to like to agree that he is. Of course, Kenji's gang... more>> finds their way to a group of four not-so-normal girls - Chitose, Sakura, Minami and Roka - and all at once, whatever reputation he may have, is nothing compared to the outrageous behavior of the girls. Shanghaied into joining their club, what will happen to his everyday life from that point on? <<less

The story revolves around the lives of two rough-and-tumble high-school friends Kato Hiroshi and Nakama Toru, who seemed to make a habit of getting into trouble and starting up fights. In keeping with the spirit of the manga, Toru and Hiroshi sport slicked back 50's style perms and adopted exaggerated swaggers that made them comical and yet also oddly cool. The drama also features an assortment of outlandish characters who sport even weirder fashions and hairdos. To describe the action in this drama, think Fight Club meets The Breakfast Club.... more>>

Won the 12th Kodansha Manga Award for general manga in 1988 (shared with ). <<less

17-year-old Iguchi Tatsuya has just been released from juvenile detention and is on probation. He's been relocated to a new area, away from the bad... more>> influence of his old friends, and is under the care of his aunt. He is determined not to be sent back to lockup, and he works hard in his aunt's restaurant. However, he still has the same personality, the same tendency to violence, and still falls in with the same sort of people. It's going to be difficult for him to stay out of trouble. <<less

The story starts with a seemingly unassuming class rep Adachi Hana who has taken an interest in the school's known delinquent, Shinagawa Daichi. Just what is her reason for following Daichi and wanting him to go on the class field trip?... more>>

Included in volume 11 is the story called Fairy Megane, a crossover between Fairy Tail and Yanki-kun to Megane-chan. <<less

Class president and overall good girl Koguma is concerned that her classmate Hino often skips classes by spending her time behind one of the school... more>> buildings. Koguma feels it's her duty to guide Hino down a better path, even if it means going along with Hino's unusual requests. <<less

Kurosaki Mafuyu was a juvenile delinquent and head of her gang before her subsequent arrest got her expelled from high school. Now that she’s transferred... more>> to a new high school, she’s determined to become an “ultra-shiny, super feminine high-school student.” But with a new friend like Hayasaka-kun and a homeroom teacher like Saeki Takaomi (who may be more than he seems), will Mafuyu really be able to live a girly-girl high-school life!? <<less

Delinquency has become a major problem among the youth, especially the high school population. Taking the matter into their own hands, the government has created... more>> a special school just for these troubled youths. Kang Hae Hyo, a seemingly normal high school student who is bullied frequently, somehow ends up in the school! He's not sure he belongs there, but something him, and his past, may be discovered at this school... <<less