Characters / Gokusen

List of important characters in the series Gokusen.

Kumiko "Yankumi" Yamaguchi

Our heroine. High school math teacher and granddaughter of one of the most powerful yakuza bosses in Japan.
  • Action Girl: Kumiko was trained to fight by her uncles and is very effective at it.
  • Badass Teacher: Of course, since she's incredibly strong, brave, and protective.
  • Distaff Counterpart: Kumiko is the Distaff Counterpart to Eikichi Onizuka. Only difference is Onizuka is a delinquent while Kumiko is the Ojou to a tough as nails Yakuza clan.
  • Girlish Pigtails: Part of her playing the docile, feminine teacher.
  • Hypocritical Heartwarming: She might be a jerk and regularly beat up Tetsu Asakura and Minoru Tatsukawa, but she makes it quite clear only she is allowed to do that to them. It's actually because of how far she would go to protect them is the reason they are so loyal to her.
  • Hypocritical Humor: She will sometimes lecture her students against something she has done herself. When called out on it she will just tell them to shut up.
  • Kicking Ass in All Her Finery: has a few cases, although this might be a subversion, as mostly those attempts don't end well.
  • Large Ham: Whenever she passionately starts talking about honor and blood brothers and such.
  • Love Can Make You Gonk: Kumiko does this whenever she is fawning over Shinohara. Her eyes go from their usual fixed glare to big, sparkly, bishojo-standard and can flick back and forth between panels when the situation calls for it.
  • Meganekko: Kumiko tries very hard to fit this trope, but the harder she tries, the less convincing it is.
  • Neighborhood Friendly Gangsters: Her and the rest of the Kurodas.
  • Nerd Glasses: Kumiko's glasses are actually arguably multipurpose, and are sometimes used as Mask Power or Scary Shiny Glasses.
  • Obfuscating Stupidity: She acts like a ditz to cover up her yakuza mannerisms.
  • Oblivious to Love: Kumiko puts so much of herself into her work and helping her students that she doesn't notice Shin's feelings towards her at all.
  • The Ojou: Kumiko's yakuza family often calls her Ojou.
  • One-Man Army: She has been able to take down any opponent in front of her easily and singlehandedly. Except Yvegney.
  • Scary Shiny Glasses: If her glasses go opaque, brace yourself.
  • She Cleans Up Nicely: Kumiko. She wears a sweatsuit and Nerd Glasses with her hair in pig tails at school, but she's beautiful when wearing a kimono, a little black dress, or even a girlish nightgown.
  • Stealth Hi/Bye: Constantly creeps out her students by just appearing along side them without them even noticing until she speaks up.
  • Tomboy: Even her own Grandfather calls her one.

Shin Sawada

Kumiko's student. He quickly figures out Kumiko's background and eventually develops a crush on her.
  • Amazon Chaser: Clearly gained an interest in Yankumi when she showed how tough she was.
  • Big Man on Campus: Incredibly smart, popular, and athletic, he's loved by everyone in the school. Not that he cares.
  • Bishōnen: Normally, this would have every female character lusting after him, but Kumiko scarcely notices and Fujiyama has her own peculiar tastes.
  • Deadpan Snarker: Often.
  • Distressed Dude: On occasion. He saves Kumiko just as often, though.
  • Dating What Daddy Hates: Shin's police chief dad isn't too happy about his son liking a Yakuza Princess.
  • Even the Guys Want Him: He has his share of admirers, within and without Shirokin.
  • Jerk with a Heart of Gold: Shin is very aloof and cold, but he goes to great lengths to help and protect his friends. He even saves Kumiko a few times, though that's arguably after the probable time he started developing a crush on her.
  • Likes Older Women: If his crush on Kumiko is anything to go by.
  • Only Sane Man
  • The Stoic: Shin very rarely changes his expression of casual disinterest for anything or anyone.
    • So when he shows anger when he hears Kimiko has been tricked to get ambushed by her students, you can see why O.O.C. Is Serious Business.
  • Surrounded by Idiots: He was able to convince his friends that his bruises and cuts were from a cupboard falling on him after a huge earthquake... until Minami points out that there hadn't been an earthquake recently.
  • Will They or Won't They?: With Yankumi. They Do.

Teruo "Kuma" Kumai

Shin's best friend and classmate since middle school.

Haruhiko "Uchi" Uchiyama

Part of Shin's circle of friends at Shirokin.

Youichi Minami

Friend and classmate of Shin.
  • Broken Masquerade: He's the one who ultimately outs Kumiko to the entire school, not out of malevolence, but because he was shocked. Also, it's because of him that the Laughing Church got outed as corrupt.
  • Delinquent Hair: Has a tall, blond mohawk.
  • Gonk: With his protuberant eyes, chubby face, and mohawk, he closely resembles a fish.
  • The Hedonist: Exemplified when he gets mad that his friends are trying to get him to think about his future since he has no plans. He ends up taking up a job that earns a lot of money doing very little work without thinking about what kind of organization it might be, and gets in trouble.

Takeshi Noda

Friend and classmate of Shin. Marginally more calm and thoughtful than the others.

Ryuichirou Kuroda

Kumiko's grandfather and the head of the Kuroda family and Ooedo Clan.

Tomoya Shinohara

The Ooedo Clan's lawyer.

Kyotaro "Kyo" Ooshima

The young boss of the Kuroda group.

Tetsu Asakura and Minoru Tatsukawa

Kumiko's "younger brothers." You rarely see one without the other.

Shizuka Fujiyama

Female music teacher at Shirokin.
  • Big Breast Pride: Apparently she's an F-cup, and she doesn't mind people mentioning it. She also drew herself with Gag Boobs on her flyer for her choir club.
  • Buxom Is Better: The students of Shirokin certainly think so.
  • Dark and Troubled Past: During her previous teaching job at a middle school, one student attempted to commit suicide due to bullying, and Fujiyama, as his teacher, was blamed for not noticing it. She went on an aimless journey (i.e. she took a vacation), and since then has been determined not to let the same thing happen to one of her students again.
  • Ephebophile: She jokes about it, but she might not be serious. She does like her boys young and thin, though.
  • In Love with Love: She claims she used to be called "Love's Busty Savior."
  • Must Have Nicotine: Rarely seen without a cigarette.
  • Shipper on Deck: For Shin and Kumiko.


A teacher sent by the chairman to spy on Kumiko.

Hiroki Kudoh

A Shirokin student who was expelled in his third year for bullying.
  • The Bully: What he was when still in school.
  • Boxed Crook: A variation; After he fails to kill Kumiko a third time, he's captured and brought back to the Ooedo compound, where he's kept as a servant. This is to reform him, and he actually does get a lot better because he realizes the Kurodas are keeping him in to protect him from all the people he's angered.
  • Ineffectual Sympathetic Villain: He goes up against Kumiko three times and fails three times.
  • Schoolyard Bully All Grown Up: Not all that grown up, but even after being expelled from Shirokin, he's fixated on continuing to make the students' lives a living hell.

Ichiro Tsuruta

Kudoh's right hand man from Shirokin.

Gonzou Shirakawa (The Principal)

The short, bald principal of Shirokin.
  • Accidental Pervert: He sometimes forgets to put his pants on before letting people see him.
  • Cloud Cuckoo Lander: He does a lot of silly things, like putting on a magic show for some visiting teachers, or posing dramatically while saying something cool-sounding.
  • Dirty Old Man: He sometimes drools over Fujiyama or lets slip something perverted.
  • Reasonable Authority Figure: As troublesome as the students of Shirokin are, he still believes in them and backs them up.
  • Obfuscating Stupidity: He knew full well that Yankumi was a Yakuza Princess and hired her because of that, knowing full well someone like her wouldn't be pushed around by juvenile delinquents.

Goro Sawatari (The Vice-Principal)

Has much more involvement in the anime than in the manga.


Kumiko's dog. Half Tosa dog, half... horse?
  • Ascended Extra: He shows up for some silliness in bonus chapters and occasionally provides some help in the manga, but in the anime, he shows up every single episode and even has some important acting and speaking roles (though no one can understand him except the audience).
  • Funny Animal: In the anime, it's almost as if he's a human in a dog's body.
  • Half-Dressed Cartoon Animal: In the special chapters of the manga, he wears a sweatsuit jacket similar to Kumiko's, though when he shows up in the main story, he's naked except for the ribbon on his tail. In the anime, he wears the jacket all the time.
  • Intellectual Animal: In the anime, where you can hear his thoughts.
  • Interspecies Romance: It's unknown who Fuji's father is, but judging by his tail, many have presumed it was a horse.
  • Talking Animal: Only to Shin in the special chapters of the manga. To everyone besides Shin, it just sounds like barking. Even outside the special chapters, though, Shin seems to know what Fuji is thinking.