Koji Seki
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.
DAN DA DAN: First Encounter
as TV Station Producer (voice)High schoolers Momo and Okarun, who debate about ghosts and aliens, investigate paranormal...
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Sword Art Online the Movie – Progressive – Scherzo of Deep Night
as Naijan (voice)Over a month has passed since 10,000 users were trapped inside the "Sword Art Online" world....
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Princess Onmitsu
as Evil Ninja (voice)A magical girl and her doll must defeat an invading horde of air pirates.
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Jujutsu Kaisen
as Fumi's Father (voice)Yuji Itadori is a boy with tremendous physical strength, though he lives a completely ordinary...
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BLUE LOCK
as Reporter B (voice)After a disastrous defeat at the 2018 World Cup, Japan's team struggles to regroup. But what's...
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Dan Da Dan
as TV Station Producer (voice)In a bet to prove whether ghosts or aliens exist, two high schoolers face terrifying paranormal...
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Dan Da Dan
as Male Client (voice)In a bet to prove whether ghosts or aliens exist, two high schoolers face terrifying paranormal...
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Dan Da Dan
as Male Teacher (voice)In a bet to prove whether ghosts or aliens exist, two high schoolers face terrifying paranormal...
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March Comes In Like a Lion
as Authorized Person 3 (voice)Rei is a 17-year old professional shōgi player, who lives by himself, not having a real family,...
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Sword Art Online
as Technical Staff (voice)In the near future, a Virtual Reality Massive Multiplayer Online Role-Playing Game (VRMMORPG)...
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Sword Art Online
as Goblin (voice)In the near future, a Virtual Reality Massive Multiplayer Online Role-Playing Game (VRMMORPG)...
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The Quintessential Quintuplets
as Teacher (voice)Fuutarou Uesugi is a poor, antisocial ace student who one day meets the rich transfer student...
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The Quintessential Quintuplets
as Homeroom Teacher (voice)Fuutarou Uesugi is a poor, antisocial ace student who one day meets the rich transfer student...
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Haikyu!!
as Kai Akakura (voice)Inspired by a small-statured pro volleyball player, Shouyou Hinata creates a volleyball team in...
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I Got a Cheat Skill in Another World and Became Unrivaled in the Real World, Too
as (voice)A door to another world stretches out before a boy who's been brutally bullied all his life....
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Yashahime: Princess Half-Demon
as Thug (voice)In feudal Japan, half-demon twins Towa and Setsuna are separated from each other during a forest...
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Yashahime: Princess Half-Demon
as Old man (voice)In feudal Japan, half-demon twins Towa and Setsuna are separated from each other during a forest...
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Yashahime: Princess Half-Demon
as Peddler (voice)In feudal Japan, half-demon twins Towa and Setsuna are separated from each other during a forest...
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Yashahime: Princess Half-Demon
as Official (voice)In feudal Japan, half-demon twins Towa and Setsuna are separated from each other during a forest...
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Yashahime: Princess Half-Demon
as Guard (voice)In feudal Japan, half-demon twins Towa and Setsuna are separated from each other during a forest...
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Yashahime: Princess Half-Demon
as Villager (voice)In feudal Japan, half-demon twins Towa and Setsuna are separated from each other during a forest...
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Yashahime: Princess Half-Demon
as Chimimoryo (voice)In feudal Japan, half-demon twins Towa and Setsuna are separated from each other during a forest...
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Yashahime: Princess Half-Demon
as Bird of Paradise (voice)In feudal Japan, half-demon twins Towa and Setsuna are separated from each other during a forest...
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Yashahime: Princess Half-Demon
as Peasant (voice)In feudal Japan, half-demon twins Towa and Setsuna are separated from each other during a forest...
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Yashahime: Princess Half-Demon
as Townsfolk (voice)In feudal Japan, half-demon twins Towa and Setsuna are separated from each other during a forest...
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Yashahime: Princess Half-Demon
as Subordinate (voice)In feudal Japan, half-demon twins Towa and Setsuna are separated from each other during a forest...
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Yashahime: Princess Half-Demon
as Vassal (voice)In feudal Japan, half-demon twins Towa and Setsuna are separated from each other during a forest...
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Yashahime: Princess Half-Demon
as Demon (voice)In feudal Japan, half-demon twins Towa and Setsuna are separated from each other during a forest...
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Yashahime: Princess Half-Demon
as Fisherman (voice)In feudal Japan, half-demon twins Towa and Setsuna are separated from each other during a forest...
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Yashahime: Princess Half-Demon
as Rock Demon (voice)In feudal Japan, half-demon twins Towa and Setsuna are separated from each other during a forest...
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Yashahime: Princess Half-Demon
as Palanquin Carrier (voice)In feudal Japan, half-demon twins Towa and Setsuna are separated from each other during a forest...
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Yashahime: Princess Half-Demon
as Green ogre (voice)In feudal Japan, half-demon twins Towa and Setsuna are separated from each other during a forest...
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Yashahime: Princess Half-Demon
as Staff member (voice)In feudal Japan, half-demon twins Towa and Setsuna are separated from each other during a forest...
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Yashahime: Princess Half-Demon
as Yokai (voice)In feudal Japan, half-demon twins Towa and Setsuna are separated from each other during a forest...
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Yashahime: Princess Half-Demon
as Raccoon dog in Mamiana Island (voice)In feudal Japan, half-demon twins Towa and Setsuna are separated from each other during a forest...
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Mission: Yozakura Family
as Detective (voice)Taiyo Asano has been on his own ever since his parents died and the only one who seems to care...
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Mission: Yozakura Family
as (voice)Taiyo Asano has been on his own ever since his parents died and the only one who seems to care...
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Mission: Yozakura Family
as Battalion member (voice)Taiyo Asano has been on his own ever since his parents died and the only one who seems to care...
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Tower of God
as (voice)Reach the top, and everything will be yours. At the top of the tower exists everything in this...
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The Aristocrat's Otherworldly Adventure
as Sebas (voice)After dying in the act of stopping a crime in modern Japan, our hero is reincarnated as Cain von...
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Daily Lives of High School Boys
as Basketball Guy (voice)Join Tadakuni, Hidenori and Yoshitake as they undergo the trials and tribulations of life in...
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Daily Lives of High School Boys
as Boy B (voice)Join Tadakuni, Hidenori and Yoshitake as they undergo the trials and tribulations of life in...
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NieR:Automata Ver1.1a
as Kingdom Citizen (voice)The distant future, 5012. The sudden aerial invasion of Earth by ＜Aliens＞ and their creations...
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NieR:Automata Ver1.1a
as Machine Creature (voice)The distant future, 5012. The sudden aerial invasion of Earth by ＜Aliens＞ and their creations...
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Remake Our Life!
as (voice)Hashiba Kyouya is a 28-year-old game developer. With his company going bankrupt, and him losing...
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Super Cub
as Clerk (voice)Koguma is a high school girl in Yamanashi. She has no parents, friends, or hobbies, and her...
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I've Been Killing Slimes for 300 Years and Maxed Out My Level
as Store Customer E (voice)After dying of overwork in the real world, I’m reincarnated as an immortal witch, and I spend...
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Let This Grieving Soul Retire
as Greg Zangief (voice)Six childhood friends make a vow one day to become treasure hunters, and eventually grow to be...
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Puniru is a Kawaii Slime
as Academic Researchers (voice)The slime created by the boy Kotarou can transform into a super beautiful girl! Kotarou is...
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