
Acting
Koji Seki
Born
1982-11-25 (43)
Place of birth
Saitama, Japan
Known for
Acting
Credits
44 titles
Koji Seki (関 幸司, Seki Kōji, born November 25, 1982) is a Japanese voice actor from Saitama Prefecture who is affiliated with Raccoon Dog. He graduated from Pro-Fit Voice Actor Training School and joined the agency Pro-Fit. On April 1, 2022, he transferred to Raccoon Dog.
Known for
8.6Yuji Itadori is a boy with tremendous physical strength, though he lives a completely ordinary high school life. One day, to save a classmate who has been attacked by curses, he eats the finger of Ryomen Sukuna, taking the curse into his own soul. From then on, he shares one body with Ryomen Sukuna. Guided by the most powerful of sorcerers, Satoru Gojo, Itadori is admitted to Tokyo Jujutsu High School, an organization that fights the curses... and thus begins the heroic tale of a boy who became a curse to exorcise a curse, a life from which he could never turn back.
JUJUTSU KAISEN
2020
8.8After the party of heroes defeated the Demon King, they restored peace to the land and returned to lives of solitude. Generations pass, and the elven mage Frieren comes face to face with humanity's mortality. She takes on a new apprentice and promises to fulfill old friends' dying wishes. Can an elven mind make peace with the nature of life and death? Frieren embarks on her quest to find out.
Frieren: Beyond Journey's End
2023
8.5A spy, an assassin and a telepath come together to pose as a family, each for their own reasons, while hiding their true identities from each other.
SPY x FAMILY
2022
8.0This is a gentle tale about people trying to regain something. And it is a tale of battle. Rei Kiriyama had lost his family in an accident when he was young. Now he is a 17-year-old pro shogi player who is burdened with deep loneliness. Rei lives alone in an old town in Tokyo, but after becoming acquainted with three sisters, Akari, Hinata and Momo, he begins to change little by little...
March Comes In Like a Lion
2016
8.6Inspired by a small-statured pro volleyball player, Hinata creates a volleyball team in his last year of middle school. Unfortunately the team is matched up against the "King of the Court" Tobio Kageyama’s team in their first tournament and inevitably lose. After the crushing defeat, Hinata vows to surpass Kageyama After entering high school, Hinata joins the volleyball team only to find that Tobio has also joined.
Haikyu!!
2014
8.1In the near future, a Virtual Reality Massive Multiplayer Online Role-Playing Game (VRMMORPG) called Sword Art Online has been released where players control their avatars with their bodies using a piece of technology called Nerve Gear. One day, players discover they cannot log out, as the game creator is holding them captive unless they reach the 100th floor of the game's tower and defeat the final boss. However, if they die in the game, they die in real life. Their struggle for survival starts now...
Sword Art Online
2012
Film credits
2020s · 4 titles
7.8Shoyo Hinata joins Karasuno High's volleyball club to be like his idol, a former Karasuno player known as the 'Little Giant'. But Hinata soon learns that he must team up with his middle school nemesis, Tobio Kageyama. Their clashing styles form a surprising weapon, but can their newfound teamwork defeat their rival Nekoma High in the highly anticipated 'Dumpster Battle', the long awaited ultimate showdown between two opposing underdog teams?
HAIKYU!! The Dumpster Battle
2024
8.5Jungle Pocket, an Umamusume who has been racing tirelessly in pursuit of becoming the greatest, is ready to take on the once-in-a-lifetime Classic Triple Crown series. However, standing in her way are rivals from the same generation, whose talent may even surpass her own.
Umamusume: Pretty Derby - Beginning of a New Era
2024
7.7Over a month has passed since 10,000 users were trapped inside the "Sword Art Online" world. Asuna, who cleared the first floor of the floating iron castle of Aincrad, joined up with Kirito and continued her journey to reach the top floor. With the support of female Information Broker Argo, clearing the floors seemed to be progressing smoothly, but conflict erupts between two major guilds who should be working together – the top player groups ALS (the Aincrad Liberation Squad) and DKB (the Dragon Knights Brigade). And meanwhile, behind the scenes exists a mysterious figure pulling the strings…
Sword Art Online the Movie – Progressive – Scherzo of Deep Night
2022
7.5High schoolers Momo and Okarun, who debate about ghosts and aliens, investigate paranormal sites, encountering supernatural forces while awaking hidden powers to face the unknown. Theatrical event featuring the first three episodes of DAN DA DAN, and an exclusive interview with Yukinobu Tatsu and Shihei Lin, the author and editor of the original manga, Fuga Yamashiro (Director), and Shion Wakayama (voice of Momo) and Natsuki Hanae (voice of Okarun).
DAN DA DAN: First Encounter
2024
Series credits
8.6Yuji Itadori is a boy with tremendous physical strength, though he lives a completely ordinary high school life. One day, to save a classmate who has been attacked by curses, he eats the finger of Ryomen Sukuna, taking the curse into his own soul. From then on, he shares one body with Ryomen Sukuna. Guided by the most powerful of sorcerers, Satoru Gojo, Itadori is admitted to Tokyo Jujutsu High School, an organization that fights the curses... and thus begins the heroic tale of a boy who became a curse to exorcise a curse, a life from which he could never turn back.
JUJUTSU KAISEN
2020
8.8After the party of heroes defeated the Demon King, they restored peace to the land and returned to lives of solitude. Generations pass, and the elven mage Frieren comes face to face with humanity's mortality. She takes on a new apprentice and promises to fulfill old friends' dying wishes. Can an elven mind make peace with the nature of life and death? Frieren embarks on her quest to find out.
Frieren: Beyond Journey's End
2023
8.5A spy, an assassin and a telepath come together to pose as a family, each for their own reasons, while hiding their true identities from each other.
SPY x FAMILY
2022
8.0This is a gentle tale about people trying to regain something. And it is a tale of battle. Rei Kiriyama had lost his family in an accident when he was young. Now he is a 17-year-old pro shogi player who is burdened with deep loneliness. Rei lives alone in an old town in Tokyo, but after becoming acquainted with three sisters, Akari, Hinata and Momo, he begins to change little by little...
March Comes In Like a Lion
2016
8.6Inspired by a small-statured pro volleyball player, Hinata creates a volleyball team in his last year of middle school. Unfortunately the team is matched up against the "King of the Court" Tobio Kageyama’s team in their first tournament and inevitably lose. After the crushing defeat, Hinata vows to surpass Kageyama After entering high school, Hinata joins the volleyball team only to find that Tobio has also joined.
Haikyu!!
2014
8.1In the near future, a Virtual Reality Massive Multiplayer Online Role-Playing Game (VRMMORPG) called Sword Art Online has been released where players control their avatars with their bodies using a piece of technology called Nerve Gear. One day, players discover they cannot log out, as the game creator is holding them captive unless they reach the 100th floor of the game's tower and defeat the final boss. However, if they die in the game, they die in real life. Their struggle for survival starts now...
Sword Art Online
2012
8.1In the near future, a Virtual Reality Massive Multiplayer Online Role-Playing Game (VRMMORPG) called Sword Art Online has been released where players control their avatars with their bodies using a piece of technology called Nerve Gear. One day, players discover they cannot log out, as the game creator is holding them captive unless they reach the 100th floor of the game's tower and defeat the final boss. However, if they die in the game, they die in real life. Their struggle for survival starts now...
Sword Art Online
2012
8.3High school soccer players from across Japan gather for a controversial project designed to create the best — and most egoistic — striker in the world.
BLUE LOCK
2022
7.5Taiyo Asano has been on his own ever since his parents died and the only one who seems to care for him is his childhood friend and classmate, Mutsumi Yozakura. But Mutsumi has a secret—she is the head of a family of spies! And on top of that, her brother Kyoichiro is dangerously protective of her! To stop Kyoichiro from killing him, Taiyo and Mutsumi must take the ultimate leap—marriage! Because in the Yozakura family, family cannot kill family.
Mission: Yozakura Family
2024
7.5Taiyo Asano has been on his own ever since his parents died and the only one who seems to care for him is his childhood friend and classmate, Mutsumi Yozakura. But Mutsumi has a secret—she is the head of a family of spies! And on top of that, her brother Kyoichiro is dangerously protective of her! To stop Kyoichiro from killing him, Taiyo and Mutsumi must take the ultimate leap—marriage! Because in the Yozakura family, family cannot kill family.
Mission: Yozakura Family
2024
7.5Taiyo Asano has been on his own ever since his parents died and the only one who seems to care for him is his childhood friend and classmate, Mutsumi Yozakura. But Mutsumi has a secret—she is the head of a family of spies! And on top of that, her brother Kyoichiro is dangerously protective of her! To stop Kyoichiro from killing him, Taiyo and Mutsumi must take the ultimate leap—marriage! Because in the Yozakura family, family cannot kill family.
Mission: Yozakura Family
2024
8.5In a bet to prove whether ghosts or aliens exist, two high schoolers face terrifying paranormal threats, gain superpowers and maybe even fall in love?!
Dan Da Dan
2024
8.5In a bet to prove whether ghosts or aliens exist, two high schoolers face terrifying paranormal threats, gain superpowers and maybe even fall in love?!
Dan Da Dan
2024
8.5In a bet to prove whether ghosts or aliens exist, two high schoolers face terrifying paranormal threats, gain superpowers and maybe even fall in love?!
Dan Da Dan
2024
8.3In feudal Japan, half-demon twins Towa and Setsuna are separated from each other during a forest fire. While desperately searching for her younger sister, Towa wanders into a mysterious tunnel that sends her into present-day Japan, where she is found and raised by Kagome Higurashi’s brother, Sota, and his family. Ten years later, the tunnel that connects the two eras has reopened, allowing Towa to be reunited with Setsuna, who is now a demon slayer working for Kohaku. But to Towa’s shock, Setsuna appears to have lost all memories of her older sister
Yashahime: Princess Half-Demon
2020
8.3In feudal Japan, half-demon twins Towa and Setsuna are separated from each other during a forest fire. While desperately searching for her younger sister, Towa wanders into a mysterious tunnel that sends her into present-day Japan, where she is found and raised by Kagome Higurashi’s brother, Sota, and his family. Ten years later, the tunnel that connects the two eras has reopened, allowing Towa to be reunited with Setsuna, who is now a demon slayer working for Kohaku. But to Towa’s shock, Setsuna appears to have lost all memories of her older sister
Yashahime: Princess Half-Demon
2020
8.3In feudal Japan, half-demon twins Towa and Setsuna are separated from each other during a forest fire. While desperately searching for her younger sister, Towa wanders into a mysterious tunnel that sends her into present-day Japan, where she is found and raised by Kagome Higurashi’s brother, Sota, and his family. Ten years later, the tunnel that connects the two eras has reopened, allowing Towa to be reunited with Setsuna, who is now a demon slayer working for Kohaku. But to Towa’s shock, Setsuna appears to have lost all memories of her older sister
Yashahime: Princess Half-Demon
2020
8.3In feudal Japan, half-demon twins Towa and Setsuna are separated from each other during a forest fire. While desperately searching for her younger sister, Towa wanders into a mysterious tunnel that sends her into present-day Japan, where she is found and raised by Kagome Higurashi’s brother, Sota, and his family. Ten years later, the tunnel that connects the two eras has reopened, allowing Towa to be reunited with Setsuna, who is now a demon slayer working for Kohaku. But to Towa’s shock, Setsuna appears to have lost all memories of her older sister
Yashahime: Princess Half-Demon
2020
8.3In feudal Japan, half-demon twins Towa and Setsuna are separated from each other during a forest fire. While desperately searching for her younger sister, Towa wanders into a mysterious tunnel that sends her into present-day Japan, where she is found and raised by Kagome Higurashi’s brother, Sota, and his family. Ten years later, the tunnel that connects the two eras has reopened, allowing Towa to be reunited with Setsuna, who is now a demon slayer working for Kohaku. But to Towa’s shock, Setsuna appears to have lost all memories of her older sister
Yashahime: Princess Half-Demon
2020
8.3In feudal Japan, half-demon twins Towa and Setsuna are separated from each other during a forest fire. While desperately searching for her younger sister, Towa wanders into a mysterious tunnel that sends her into present-day Japan, where she is found and raised by Kagome Higurashi’s brother, Sota, and his family. Ten years later, the tunnel that connects the two eras has reopened, allowing Towa to be reunited with Setsuna, who is now a demon slayer working for Kohaku. But to Towa’s shock, Setsuna appears to have lost all memories of her older sister
Yashahime: Princess Half-Demon
2020
8.3In feudal Japan, half-demon twins Towa and Setsuna are separated from each other during a forest fire. While desperately searching for her younger sister, Towa wanders into a mysterious tunnel that sends her into present-day Japan, where she is found and raised by Kagome Higurashi’s brother, Sota, and his family. Ten years later, the tunnel that connects the two eras has reopened, allowing Towa to be reunited with Setsuna, who is now a demon slayer working for Kohaku. But to Towa’s shock, Setsuna appears to have lost all memories of her older sister
Yashahime: Princess Half-Demon
2020
8.3In feudal Japan, half-demon twins Towa and Setsuna are separated from each other during a forest fire. While desperately searching for her younger sister, Towa wanders into a mysterious tunnel that sends her into present-day Japan, where she is found and raised by Kagome Higurashi’s brother, Sota, and his family. Ten years later, the tunnel that connects the two eras has reopened, allowing Towa to be reunited with Setsuna, who is now a demon slayer working for Kohaku. But to Towa’s shock, Setsuna appears to have lost all memories of her older sister
Yashahime: Princess Half-Demon
2020
8.3In feudal Japan, half-demon twins Towa and Setsuna are separated from each other during a forest fire. While desperately searching for her younger sister, Towa wanders into a mysterious tunnel that sends her into present-day Japan, where she is found and raised by Kagome Higurashi’s brother, Sota, and his family. Ten years later, the tunnel that connects the two eras has reopened, allowing Towa to be reunited with Setsuna, who is now a demon slayer working for Kohaku. But to Towa’s shock, Setsuna appears to have lost all memories of her older sister
Yashahime: Princess Half-Demon
2020
8.3In feudal Japan, half-demon twins Towa and Setsuna are separated from each other during a forest fire. While desperately searching for her younger sister, Towa wanders into a mysterious tunnel that sends her into present-day Japan, where she is found and raised by Kagome Higurashi’s brother, Sota, and his family. Ten years later, the tunnel that connects the two eras has reopened, allowing Towa to be reunited with Setsuna, who is now a demon slayer working for Kohaku. But to Towa’s shock, Setsuna appears to have lost all memories of her older sister
Yashahime: Princess Half-Demon
2020
8.3In feudal Japan, half-demon twins Towa and Setsuna are separated from each other during a forest fire. While desperately searching for her younger sister, Towa wanders into a mysterious tunnel that sends her into present-day Japan, where she is found and raised by Kagome Higurashi’s brother, Sota, and his family. Ten years later, the tunnel that connects the two eras has reopened, allowing Towa to be reunited with Setsuna, who is now a demon slayer working for Kohaku. But to Towa’s shock, Setsuna appears to have lost all memories of her older sister
Yashahime: Princess Half-Demon
2020
8.3In feudal Japan, half-demon twins Towa and Setsuna are separated from each other during a forest fire. While desperately searching for her younger sister, Towa wanders into a mysterious tunnel that sends her into present-day Japan, where she is found and raised by Kagome Higurashi’s brother, Sota, and his family. Ten years later, the tunnel that connects the two eras has reopened, allowing Towa to be reunited with Setsuna, who is now a demon slayer working for Kohaku. But to Towa’s shock, Setsuna appears to have lost all memories of her older sister
Yashahime: Princess Half-Demon
2020
8.3In feudal Japan, half-demon twins Towa and Setsuna are separated from each other during a forest fire. While desperately searching for her younger sister, Towa wanders into a mysterious tunnel that sends her into present-day Japan, where she is found and raised by Kagome Higurashi’s brother, Sota, and his family. Ten years later, the tunnel that connects the two eras has reopened, allowing Towa to be reunited with Setsuna, who is now a demon slayer working for Kohaku. But to Towa’s shock, Setsuna appears to have lost all memories of her older sister
Yashahime: Princess Half-Demon
2020
8.3In feudal Japan, half-demon twins Towa and Setsuna are separated from each other during a forest fire. While desperately searching for her younger sister, Towa wanders into a mysterious tunnel that sends her into present-day Japan, where she is found and raised by Kagome Higurashi’s brother, Sota, and his family. Ten years later, the tunnel that connects the two eras has reopened, allowing Towa to be reunited with Setsuna, who is now a demon slayer working for Kohaku. But to Towa’s shock, Setsuna appears to have lost all memories of her older sister
Yashahime: Princess Half-Demon
2020
8.3In feudal Japan, half-demon twins Towa and Setsuna are separated from each other during a forest fire. While desperately searching for her younger sister, Towa wanders into a mysterious tunnel that sends her into present-day Japan, where she is found and raised by Kagome Higurashi’s brother, Sota, and his family. Ten years later, the tunnel that connects the two eras has reopened, allowing Towa to be reunited with Setsuna, who is now a demon slayer working for Kohaku. But to Towa’s shock, Setsuna appears to have lost all memories of her older sister
Yashahime: Princess Half-Demon
2020
8.3In feudal Japan, half-demon twins Towa and Setsuna are separated from each other during a forest fire. While desperately searching for her younger sister, Towa wanders into a mysterious tunnel that sends her into present-day Japan, where she is found and raised by Kagome Higurashi’s brother, Sota, and his family. Ten years later, the tunnel that connects the two eras has reopened, allowing Towa to be reunited with Setsuna, who is now a demon slayer working for Kohaku. But to Towa’s shock, Setsuna appears to have lost all memories of her older sister
Yashahime: Princess Half-Demon
2020
8.3In feudal Japan, half-demon twins Towa and Setsuna are separated from each other during a forest fire. While desperately searching for her younger sister, Towa wanders into a mysterious tunnel that sends her into present-day Japan, where she is found and raised by Kagome Higurashi’s brother, Sota, and his family. Ten years later, the tunnel that connects the two eras has reopened, allowing Towa to be reunited with Setsuna, who is now a demon slayer working for Kohaku. But to Towa’s shock, Setsuna appears to have lost all memories of her older sister
Yashahime: Princess Half-Demon
2020
8.3In feudal Japan, half-demon twins Towa and Setsuna are separated from each other during a forest fire. While desperately searching for her younger sister, Towa wanders into a mysterious tunnel that sends her into present-day Japan, where she is found and raised by Kagome Higurashi’s brother, Sota, and his family. Ten years later, the tunnel that connects the two eras has reopened, allowing Towa to be reunited with Setsuna, who is now a demon slayer working for Kohaku. But to Towa’s shock, Setsuna appears to have lost all memories of her older sister
Yashahime: Princess Half-Demon
2020
8.3In feudal Japan, half-demon twins Towa and Setsuna are separated from each other during a forest fire. While desperately searching for her younger sister, Towa wanders into a mysterious tunnel that sends her into present-day Japan, where she is found and raised by Kagome Higurashi’s brother, Sota, and his family. Ten years later, the tunnel that connects the two eras has reopened, allowing Towa to be reunited with Setsuna, who is now a demon slayer working for Kohaku. But to Towa’s shock, Setsuna appears to have lost all memories of her older sister
Yashahime: Princess Half-Demon
2020
8.3In feudal Japan, half-demon twins Towa and Setsuna are separated from each other during a forest fire. While desperately searching for her younger sister, Towa wanders into a mysterious tunnel that sends her into present-day Japan, where she is found and raised by Kagome Higurashi’s brother, Sota, and his family. Ten years later, the tunnel that connects the two eras has reopened, allowing Towa to be reunited with Setsuna, who is now a demon slayer working for Kohaku. But to Towa’s shock, Setsuna appears to have lost all memories of her older sister
Yashahime: Princess Half-Demon
2020
7.1This anthology of animated shorts from around the world celebrates the mythos of Star Wars through unique cultural lenses.
Star Wars: Visions
2021
8.1Reach the top, and everything will be yours. At the top of the tower exists everything in this world, and all of it can be yours. You can become a god. This is the story of the beginning and the end of Rachel, the girl who climbed the tower so she could see the stars, and Bam, the boy who needed nothing but her.
Tower of God
2020
7.7The slime created by the boy Kotarou can transform into a super beautiful girl! Kotarou is constantly getting pushed around by Puniru's freewheeling antics. It's a joyful and exciting life every day!
Puniru Is a Kawaii Slime
2024
7.7The slime created by the boy Kotarou can transform into a super beautiful girl! Kotarou is constantly getting pushed around by Puniru's freewheeling antics. It's a joyful and exciting life every day!
Puniru Is a Kawaii Slime
2024
8.1The distant future, 5012. The sudden aerial invasion of Earth by <Aliens> and their creations <Machine Lifeforms> led mankind to the brink of extinction. The surviving number of humans who took refuge on the moon to organize a counterattack using <android> soldiers to recapture Earth. However, the war reaches a stalemate as the <Machine Lifeforms> continue to multiply infinitely. In turn, humanity deploys anew unit of android soldiers as an ultimate weapon: <YoRHa> Newly dispatched to Earth <2B> joins <9S>, the analyst currently stationed there, where amid their mission, they encounter a myriad of mysterious phenomena... This is the story of these lifeless <androids> and their endless fight for the sake of mankind.
NieR:Automata Ver1.1a
2023
8.1The distant future, 5012. The sudden aerial invasion of Earth by <Aliens> and their creations <Machine Lifeforms> led mankind to the brink of extinction. The surviving number of humans who took refuge on the moon to organize a counterattack using <android> soldiers to recapture Earth. However, the war reaches a stalemate as the <Machine Lifeforms> continue to multiply infinitely. In turn, humanity deploys anew unit of android soldiers as an ultimate weapon: <YoRHa> Newly dispatched to Earth <2B> joins <9S>, the analyst currently stationed there, where amid their mission, they encounter a myriad of mysterious phenomena... This is the story of these lifeless <androids> and their endless fight for the sake of mankind.
NieR:Automata Ver1.1a
2023
