Manga like Under Ninja

The Fable

Also known as The Fable.

Status: Finished
Genres: Action , Comedy , Drama , Romance

When you're the infamous prodigy hitman known only as “Fable,” many things come easy. Being a normal person, however, isn't one of them. In fact, being told that he can't kill anyone for a while may just be the hardest job Fable’s ever taken...



Note: Won the 41st Kodansha Manga Awards in the general manga category in 2017.

Tags: Yakuza , Seinen , Urban , Assassins , Crime , Guns , Primarily Adult Cast , Surreal Comedy , Found Family , Nudity , Survival , Disability , Revenge , Bar , Heterosexual , Gore , Tragedy , Rural

I Am a Hero

Also known as I Am a Hero.

Status: Finished
Genres: Action , Horror , Psychological

A mentally unhinged manga artist witnesses the beginning of a zombie outbreak in Tokyo, and he’s certain of only two things: he’s destined to be the city’s hero, and he possesses something quite rare in Japan—an actual firearm!



Notes:
Nominated for the 3rd and 4th Manga Taisho Award (2010).
Includes a new epilogue chapter that was released 4 years after the official end of the manga.

Tags: Seinen , Survival , Zombie , Post-Apocalyptic , Male Protagonist , Gore , Guns , Body Horror , Urban , Tragedy , Love Triangle , Age Gap , POV , Disability , Hikikomori , Nudity , Cult , Otaku Culture

Heiwa no Kuni no Shimazaki e

Also known as Shimazaki in the Land of Peace.

Status: Releasing
Genres: Action , Slice of Life

After surviving a terrorist incident as a child, Shingo Shimazaki was forced to join the League for Economic Liberations' revolutionary army. Now, thirty years later, he's back in Japan and trying to assimilate to a normal life. His Japanese may be awkward, and his grasp of ordinary tasks a little weak, but he has all the combat and surveillance training of a green beret. There are many kindhearted souls who want to help him - and a few not so kind ones who will do anything to stop him.

Tags: Criminal Organization , Seinen , Terrorism , Male Protagonist , Rehabilitation , Primarily Adult Cast , Military , Crime , Bullying , Espionage

Shinobigoto

Also known as Shinobi Undercover.

Status: Releasing
Genres: Action , Comedy

Even in modern Japan, ninja still hide in the shadows. Young ninja Yodaka has received his mission--protect high school student Aoi at all cost. But can a ninja survive the wild world of high school while also fulfilling his mission?



Tags: Ninja , Heterosexual , Shounen , School , Male Protagonist , Super Power , Primarily Teen Cast , Politics , Urban Fantasy , Espionage

Koroshiya 1

Also known as Ichi the Killer.

Status: Finished
Genres: Action , Psychological

Ichi may seem like a spineless weakling—but when the tears start flowing, a terrifying transformation takes place. Driven to his mental breaking point, Ichi becomes an unstoppable force of carnage, unleashing a torrent of violence on his next target. When his destructive path collides with Kakihara, a sadomasochistic yakuza boss with a penchant for pain, it ignites a bloody spiral of chaos, depravity, and unimaginable brutality.

From the legendary creator of Homunculus and HIKARI-MAN comes the groundbreaking manga that inspired Takashi Miike’s cult classic film—a shocking exploration of wrath, vengeance, and the dark corners of the human psyche.



Tags: Yakuza , Gore , Body Horror , Crime , Sadism , Masochism , Revenge , Anti-Hero , Seinen , Masturbation , Psychosexual , Assassins , Primarily Male Cast , Nudity , Urban , Primarily Adult Cast , Memory Manipulation , Ero Guro , Martial Arts , Male Protagonist , Tragedy

Amateur Vigilante

Status: Releasing
Genres: Drama

Shintaro Ojiro, 39 years old. Low education, low income - what you'd call a bottom-tier citizen. A man who has continually lost and been deprived, cut off from society, at the end of his loneliness and despair, decides to assassinate a politician...



Tags: Yakuza , Crime , Anti-Hero , Male Protagonist , Seinen

The Fable: The third secret

Also known as The Fable - The third secret.

Status: Releasing
Genres: Action , Comedy , Drama

When you're the infamous "genius killer" hitman The Fable, many things come easy. Being a normal person, however, isn't one of them. In fact, being told that he can't kill anyone for a while may just be the hardest job he's ever taken...



Tags: Seinen , Assassins , Criminal Organization , Yakuza

Golden Kamuy

Also known as Golden Kamuy.

Status: Finished
Genres: Action , Adventure , Comedy , Drama

In the early twentieth century, Russo-Japanese War veteran Saichi “Immortal” Sugimoto scratches out a meager existence during the postwar gold rush in the wilderness of Hokkaido. When he stumbles across a map to a fortune in hidden Ainu gold, he sets off on a treacherous quest to find it. But Sugimoto is not the only interested party, and everyone who knows about the gold will kill to possess it! Faced with the harsh conditions of the northern wilderness, ruthless criminals and rogue Japanese soldiers, Sugimoto will need all his skills and luck—and the help of an Ainu girl named Asirpa—to survive.



Note: Won the 9th Manga Taisho Award in 2016 and the 22nd Tezuka Osamu Cultural Prize in 2018. Nominated for the 20th and 21st Tezuka Osamu Cultural Prize and the 40th Kodansha Manga Awards in 2016.

Tags: Historical , Conspiracy , Military , Outdoor Activities , Indigenous Cultures , Seinen , Politics , Ensemble Cast , Food , Educational , Surreal Comedy , Travel , Found Family , Gore , Primarily Male Cast , Primarily Adult Cast , Survival , Snowscape , Guns , Cute Boys Doing Cute Things , Male Harem , Revenge , Language Barrier , Anti-Hero , LGBTQ+ Themes , Slapstick , Crime , Prison , Trains , Animals , Nudity , Male Protagonist , Wilderness , Archery , Swordplay , Disability , Suicide , Tanned Skin , Transgender , Twins , Cannibalism , Heterosexual , Zoophilia , Yakuza , Time Skip , Dissociative Identities , Crossdressing

Imanin

Also known as Shinewbi.

Status: Finished
Genres: Action , Comedy , Romance , Sci-Fi

Rio Mikazuki is a shinobi. That is, a shinobi living in the modern worldーa "shinewbi" of sorts. All of the ninjutsu and ninja tools of the current era are at her immediate disposal and are considerably more high-tech than before. However, it seems as though her senior partner, Igarashi, has learned how to use real ninjutsu through the long-forgotten traditional training methods of the old shinobi... The stage unfolds for a romantic comedy of two shinobi working in a modern world!



Tags: Ninja , Work , Heterosexual , Shounen , Primarily Adult Cast , Female Protagonist , Super Power , Urban Fantasy , Age Regression

J⇔M

Also known as JM.

Status: Releasing
Genres: Action , Comedy

J is a professional hitman... he was orphaned and raised by the yakuza as an assassin. He was too good, killed too many people, and knew too much about their organization. When the syndicate tried to erase him, their plan backfired...when three syndicates were wiped out completely, J became "untouchable."

Megumi, a girl in third grade, was bullied by her classmates because she is half-Japanese, half-American, and gets good grades.

One day, when they bumped their heads... they switched bodies. Now J is inside a cute girl's body...and Megumi is inside the tough guy's body.

Now they must hide that they are not who they were and keep their everyday lives the same as before. J never knew how hard a girl's life is, and Megumi enjoys her new life?!



Tags: Body Swapping , Assassins , Seinen , Male Protagonist , Criminal Organization , Yakuza , Parody , Gender Bending , Guns , Estranged Family , School , Female Protagonist , Ensemble Cast , Bullying , Parenthood , Gore , Cosplay , Orphan