Shin Koyanagi

Acting

Shin Koyanagi

Born 1987-03-14 · Tokyo, Japan

Shin Koyanagi (小柳 心, Koyanagi Shin, March 14, 1987) is a Japanese actor, writer, and screenwriter from Tokyo. He has blood type A and is 181 cm tall. He belongs to Stardust Promotion. His father is the singer and talent Bro.TOM of the Bubblegum Brothers, and his younger brother is actor Yu Koyanagi.

Acting credits

Demon City poster
6.8

Framed for his family's murder and left for dead, an ex-hitman will stop at nothing to exact revenge on the masked "demons" who have taken over his city.

Demon City

2025

High & Low The Worst X poster
7.5

Fists fly when Oya High’s street fighters defend themselves from a three-school alliance of brawlers.

High & Low The Worst X

2022

Eiga Kamen Raidā Zettsu Sayonara no Misshon poster
NR

Baku Yorozu/Kamen Rider ZEZTZ is accused of terrorism by the National Public Safety Commission. Convinced of his innocence, Kensei Odaka/Kamen Rider NOX pursues the true culprit, and finally tracks down the mastermind behind it all, National Public Safety Commission Chairman, Shuma Kumon/Kamen Rider Mugen.

Eiga Kamen Raidā Zettsu Sayonara no Misshon

2026

One Million Yen Girl poster
7.2

A 21-year-old girl is released from prison, only to deal with the neighborhood gossip about her and family conflicts. She decides to save one million yen, move to where no one knows her and keep repeating the process.

One Million Yen Girl

2008

High & Low The Worst poster
7.5

The street fighters of Oya High and the delinquent brawlers of Housen Academy face off against each other when both seemingly attack each other.

High & Low The Worst

2019

First Love poster
6.7

One night in Tokyo, Leo, a young boxer, meets his first love, Monica, an imprisoned sex worker. Caught up in a drug-smuggling scheme, they find themselves pursued by a corrupt cop, a yakuza, his nemesis, and a female assassin.

First Love

2019

Unification of Japan 34 poster
NR

Renji Himuro is cornered after the president Yuichi Kawatani and his assistant Wakagashira Yuto Tamura are arrested in the Marukami-kai's plan to destroy the Kyowa-kai. In order to overthrow the Sekine Cabinet, which has close ties with the Marukami-kai, Himuro supports his opponent, former Secretary-General Ishida, in the next presidential election, and tries to stop the Marukami-kai's plot.

Unification of Japan 34

2019

Kamen Rider ZEZTZ: Into the Dream poster
NR

Step into the world of ZEZTZ with a special online event featuring a character show, talk show, and live performance!

Kamen Rider ZEZTZ: Into the Dream

2026

OUT poster
6.3

Tatsuya, a former gang leader, seeks a fresh start after juvenile detention but quickly finds himself entangled in a gang rivalry. Amidst the chaos, he forms unexpected bonds with Kaname, a rival gang member, and Chihiro, the sister of a late gang leader, as they navigate the dangerous gang world together.

OUT

2023

Blazing Fists poster
4.2

Ikuto and Ryoma grow close after meeting in juvenile detention. Motivated by Mikuru Asakura's words, they set their sights on the martial arts event Breaking Down, but looming rivalries threaten to derail their dream.

Blazing Fists

2025

Overlord: Bloodline of Brutality IV poster
NR

In order to fulfill the fate and great cause of placing his sworn brother, Kiyoharu Washio (Kazuyoshi Ozawa), who had been buried in the darkness until now, as the 12th generation leader of the Naito Shinjuku family, Yuki Kanemaru (Masaya Kato) covered the office with flames and ultimately met his end in self-immolation. Just as he passes away, former 12th generation underling, Hideyoshi Ogami (Norimasa Fujie), is released after serving a long prison sentence. This leads the Naito Shinjuku family into a three-way struggle: Toki Reiji (Yoshiyuki Yamaguchi) and his faction who support Taiga Washio (Haruto Ochiai) as the 13th generation, the faction led by Akira Shiba (Kunihiko Ida) who seeks to put Seiharu in power and rewrite history, and Ogami’s faction. Finally, the president of the Osaka Namba-kai, Masami Yukimura (Takashi Ukaji), reveals himself, and the story is about to connect to a new bloodline!

Overlord: Bloodline of Brutality IV

2017

Kingdom 5: The Man Who Became Don poster
NR

Shimazu Clan's third-generation boss, Tetsuo Sakuragi (Yasukaze Motomiya), and his sworn brother, Kenichi Kanamori (Yoshiyuki Yamaguchi), are set to be released from prison. Although Sakuragi plans to personally welcome his brother's return, Eitoshi Kaji (Hitoshi Ozawa) advises against it. Sakuragi dismisses Kaji's concerns, but Kaji reaches out to Tomomatsu Miwa (Naoki Hongo) of the Miwa Clan for support in convincing Sakuragi. On the day of Kanamori's release, it is Kaji, not Sakuragi, who comes to greet him. Witnessing this, Kanamori’s reaction is…

Kingdom 5: The Man Who Became Don

2020

I'll Give It My All ... Tomorrow poster
6.7

41-year-old Shizuo Daikoku (Shinichi Tsutsumi) suddenly quits his job at a company to become a mangaka. His family and friends become involved in his new pursuit...

I'll Give It My All ... Tomorrow

2013

Unification of Japan 31 poster
NR

Kyowa-kai Himuro and Marukami-kai Tsurumi are in a tense state of conflict. The conflict between the two groups intensified due to internal disputes between the Yokohama and Fujishiro groups. Meanwhile, Himuro's brother Akimoto, a member of the Marukami-kai leadership, dies of illness. With the deterrence of East-West conflict gone, tensions between the Kyowa-kai and the Marukami-kai reach a climax.

Unification of Japan 31

2018

Overlord: Bloodline of Misfortune II poster
NR

After the death of the 12th-generation boss, Gunji Washio, the Naito Shinjuku Family attempts to rebuild under acting boss Kanemaru (Masaya Kato). However, a clash arises with the underboss, Reiji (Yoshiyuki Yamaguchi), who nominates Gunji’s successor, Taiga Washio (Haruto Ochiai), as the 13th-generation boss. This discord fractures the once-unified family. Adding to the chaos, the Tokyo Four Society, which had been held together by Gunji’s absolute leadership, falls into disarray. Shinjuku descends once more into a lawless battlefield of feuding yakuza factions. The conflict between Reiji’s sense of justice and Kanemaru’s vision of leadership traces its origins back to a tragic incident during the era of the 11th-generation boss, Kiryu Washio (Shinzo Horita).

Overlord: Bloodline of Misfortune II

2016

Unification of Japan 32 poster
NR

Himuro and Tamura of the Kyowa-kai discover that the conflict with the Marukami-kai involving the Yokohama Fujishiro-gumi is a secret maneuver between the Chinatown mafia and the half-grey group Kobura. Having discovered that they have a common enemy, the Kyowa-kai and Marukami-kai formulate a joint strategy, but Himuro and Tsurumi of the Marukami-kai are at odds over the dead Ryuji Munakata.

Unification of Japan 32

2019

Unification of Japan 30 poster
NR

Himuro and Tamura put an end to the suffering of Munakata, the leader of the Fujishiro-gumi of the Marukami-kai, and expanded the Kyowa-kai to the Kanto region, but soon after, they receive news of Munakata's suicide. When Himuro saw the suicide note, he became suspicious and concluded that it was the work of Tsurumi of the Marukami-kai, who was the first to discover it. The conflict between Himuro and Tsurumi becomes even more intense.

Unification of Japan 30

2018

Unification of Japan 33 poster
NR

Due to the Marukami-kai's summit operation, the Kyowa-kai, which had its president Kawatani and other executives arrested, was in an unprecedented state of turmoil. Meanwhile, in the Marukami-kai, Kikumura, the successor to the deceased Tsurumi, and Tatsumi, the leader of the Mita family known for being a mad dog, are released from prison, and preparations are underway to force the Kyowa-kai into a corner.

Unification of Japan 33

2019

Unification of Japan 29 poster
NR

Himuro and Tamura of the Kyowakai finally take revenge by taking down the perpetrator of Shibuya's murder. While he was pouring out his thoughts in front of a grave in Shibuya, Baba, who was supposed to have defected to the Kyojinkai, appeared. On the other hand, the Marukami-kai in the Kanto region will no longer be under pressure from politicians, and a conflict with the Kyowa-kai in the Hokuriku region will become inevitable.

Unification of Japan 29

2018

Unification Of Japan 24 poster
NR

After a nationwide yakuza conflict ends, Kyowakai enters a new phase under Wakagashira Himuro Renji (Yasukaze Motomiya), strengthening its territories across Japan. Assistant Wakagashira Tamura (Yoshiyuki Yamaguchi) moves the Kawatani-gumi headquarters to Osaka to secure western Japan. In Tohoku, many groups join the Kanto-based Marugami-kai led by Mita (Shun Sugata), but Hirakawa (Hitomi Matsuda) of Shinyukai refuses and instead joins Kyowakai. Seeking revenge, Marugami-kai Vice Director Tsurumi (Mikio Osawa) prepares for conflict. Within Kyowakai, Wakagashira-hosa Kijima becomes isolated, while former Kudo-gumi members plot a return by targeting Chairman Kawatani (Hitoshi Ozawa). Meanwhile, Ryoichi (Shin Koyanagi), son of the first Gonda-gumi boss, is released from prison and placed under Himuro’s care—bringing new uncertainty.

Unification Of Japan 24

2017

Unification of Japan 28 poster
NR

The conflict in Nagoya has settled down, and Joji and Ryoichi are promoted to direct advisors due to their achievements. In addition, a parent-child ceremony with Kawatani will be held. Also, Himuro and Tamura were thinking about how to avenge the killed Shibuya. Meanwhile, the Kyoujinkai, fearing retaliation, seeks help from Hokuriku and attempts to draw in the Kitakoshi-gumi.

Unification of Japan 28

2018

Shitamachi Ninkyoden Hawk poster
NR

No synopsis available yet.

Shitamachi Ninkyoden Hawk

2020

Jujutsu Kaisen: The Stage -Kyoto Sister School Exchange Event, The Origin of Blind Obedience- poster
NR

Jujutsu Kaisen stage play.

Jujutsu Kaisen: The Stage -Kyoto Sister School Exchange Event, The Origin of Blind Obedience-

2024

Kingdom 6: The Man Who Became Don poster
NR

The third-generation Shimazu Clan leader, Tetsuo Sakuragi (Yasukaze Motomiya), arranges a meeting with Kenichi Kanamori (Yoshiyuki Yamaguchi), but Kanamori refuses to listen. Hidetoshi Kaji (Hitoshi Ozawa), the head of the Koga Family, takes matters into his own hands and eliminates Natsuo Hiroshige (Eiichi Furui), a former member of Shimazu’s Shinseikai faction, who was secretly working to link Kanamori with the Ichikō Alliance. As Sakuragi and Kaji struggle to address the Kanamori issue, Kanamori’s ties with the Ichikō Alliance deepen, leaving Sakuragi on the verge of giving up. Amidst discussions of Kanamori becoming a sworn brother to Shingo Ōtatsu (Yoshihiro Fujiwara), the Ichikō Alliance’s headquarters chief, Sakuragi sends assistant underboss Naruhide Funaki (Yuma Ishigaki) to infiltrate Kanamori’s group. Funaki desperately tries to prevent Kanamori’s alliance with Ichikō but ultimately reveals a certain truth to Kanamori that changes everything…

Kingdom 6: The Man Who Became Don

2020