
Koji Seki
Acting
Biography
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.
Born: November 25, 1982
Place of Birth: Saitama, Japan
Known For

Haikyu!!
Inspired by a small-statured pro volleyball player, Shouyou 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.

JUJUTSU KAISEN
Yuji 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.

Dan Da Dan
In 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
In 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
In a bet to prove whether ghosts or aliens exist, two high schoolers face terrifying paranormal threats, gain superpowers and maybe even fall in love?!

SPY x FAMILY
A 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.

The Quintessential Quintuplets
Fuutarou Uesugi is a poor, antisocial ace student who one day meets the rich transfer student Itsuki Nakano. They argue but when Uesugi realizes he is to be her tutor, he tries to get on better terms. While trying to do so he meets four other girls.

The Quintessential Quintuplets
Fuutarou Uesugi is a poor, antisocial ace student who one day meets the rich transfer student Itsuki Nakano. They argue but when Uesugi realizes he is to be her tutor, he tries to get on better terms. While trying to do so he meets four other girls.

Yashahime: Princess Half-Demon
In 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
In 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
Filmography
as Mathematics Teacher (voice)
as Izakaya Manager (voice)
as Samurai (voice)
as Merchant (voice)
as (voice)
as Kaiser (voice)
as Academic Researchers (voice)
as Academic Researcher (voice)
as Knight (voice)
as TV Station Producer (voice)
as Male Client (voice)
as Male Teacher (voice)
as Greg Zangief (voice)
as TV Station Producer (voice)
as Detective (voice)
as (voice)
as Battalion member (voice)
as Patient (voice)
as Priest (voice)
as Man (voice)
as Soldier (voice)
as Merchant (voice)
as Kingdom Citizen (voice)
as Machine Creature (voice)
as Naijan (voice)
as Reporter B (voice)
as Rahden (voice)
as Eno's Father / Resistance Member (voice)
as (voice)
as Store Customer E (voice)
as Clerk (voice)
as Fumi's Father (voice)
as Thug (voice)
as Old man (voice)
as Peddler (voice)
as Official (voice)
as Guard (voice)
as Villager (voice)
as Chimimoryo (voice)
as Bird of Paradise (voice)
as Peasant (voice)
as Townsfolk (voice)
as Subordinate (voice)
as Vassal (voice)
as Demon (voice)
as Fisherman (voice)
as Rock Demon (voice)
as Palanquin Carrier (voice)
as Green ogre (voice)
as Staff member (voice)
as Yokai (voice)
as Raccoon dog in Mamiana Island (voice)
as (voice)
as Staff (voice)
as Teacher (voice)
as Homeroom Teacher (voice)
as Authorized Person 3 (voice)
as Kai Akakura (voice)
as Technical Staff (voice)
as Goblin (voice)
as Basketball Guy (voice)
as Boy B (voice)