Koji Seki
Person

Koji Seki

Multiple people share this name — showing the most well-known match (Acting).

Acting · Born 1982-11-25 · age 43 · Saitama, Japan

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.

7.8
Crowd average · 36 titles
37
Titles

Titles

JUJUTSU KAISEN
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8.6

JUJUTSU KAISEN

Oct 3, 2020
Actor
SPY x FAMILY
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8.5

SPY x FAMILY

Apr 9, 2022
Actor
Sword Art Online
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8.2

Sword Art Online

Jul 8, 2012
Actor
Haikyu!!
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8.6

Haikyu!!

Apr 6, 2014
Actor
Dan Da Dan
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8.5

Dan Da Dan

Oct 4, 2024
Actor
Frieren: Beyond Journey's End
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8.8

Frieren: Beyond Journey's End

Sep 29, 2023
Actor
The Quintessential Quintuplets
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8.4

The Quintessential Quintuplets

Jan 11, 2019
Actor
BLUE LOCK
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8.3

BLUE LOCK

Oct 9, 2022
Actor
Tower of God
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8.2

Tower of God

Apr 2, 2020
Actor
Star Wars: Visions
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7.1

Star Wars: Visions

Sep 22, 2021
Actor
I Got a Cheat Skill in Another World and Became Unrivaled in the Real World, Too
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8.2

I Got a Cheat Skill in Another World and Became Unrivaled in the Real World, Too

Apr 7, 2023
Actor
HAIKYU!! The Dumpster Battle
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7.8

HAIKYU!! The Dumpster Battle

Feb 16, 2024
Actor
I've Been Killing Slimes for 300 Years and Maxed Out My Level
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7.8

I've Been Killing Slimes for 300 Years and Maxed Out My Level

Apr 10, 2021
Actor
Sword Art Online the Movie – Progressive – Scherzo of Deep Night
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7.7

Sword Art Online the Movie – Progressive – Scherzo of Deep Night

Oct 22, 2022
Actor
Daily Lives of High School Boys
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8.0

Daily Lives of High School Boys

Jan 10, 2012
Actor
NieR:Automata Ver1.1a
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8.1

NieR:Automata Ver1.1a

Jan 8, 2023
Actor
Yashahime: Princess Half-Demon
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8.3

Yashahime: Princess Half-Demon

Oct 3, 2020
Actor
March Comes In Like a Lion
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8.0

March Comes In Like a Lion

Oct 8, 2016
Actor
ID: INVADED
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7.3

ID: INVADED

Jan 6, 2020
Actor
Orb: On the Movements of the Earth
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8.0

Orb: On the Movements of the Earth

Oct 5, 2024
Actor
You and I Are Polar Opposites
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8.4

You and I Are Polar Opposites

Jan 11, 2026
Actor
Mission: Yozakura Family
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7.5

Mission: Yozakura Family

Apr 7, 2024
Actor
The Aristocrat's Otherworldly Adventure: Serving Gods Who Go Too Far
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7.1

The Aristocrat's Otherworldly Adventure: Serving Gods Who Go Too Far

Apr 3, 2023
Actor
Remake Our Life!
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7.3

Remake Our Life!

Jul 3, 2021
Actor
Let This Grieving Soul Retire
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6.6

Let This Grieving Soul Retire

Oct 1, 2024
Actor
Super Cub
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7.3

Super Cub

Apr 7, 2021
Actor
Umamusume: Pretty Derby - Beginning of a New Era
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8.6

Umamusume: Pretty Derby - Beginning of a New Era

May 24, 2024
Actor
Tearmoon Empire
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7.1

Tearmoon Empire

Oct 8, 2023
Actor
Welcome to the Outcast's Restaurant!
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7.3

Welcome to the Outcast's Restaurant!

Jul 3, 2025
Actor
DAN DA DAN: First Encounter
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7.6

DAN DA DAN: First Encounter

Aug 31, 2024
Actor
Catch Me at the Ballpark!
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7.9

Catch Me at the Ballpark!

Apr 2, 2025
Actor
Summer Pockets
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6.8

Summer Pockets

Apr 7, 2025
Actor
Puniru Is a Kawaii Slime
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7.7

Puniru Is a Kawaii Slime

Oct 6, 2024
Actor
Akane-banashi
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8.1

Akane-banashi

Apr 4, 2026
Actor
Solo Camping for Two
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7.3

Solo Camping for Two

Jul 11, 2025
Actor
Inexpressive Kashiwada and Expressive Oota
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7.0

Inexpressive Kashiwada and Expressive Oota

Oct 4, 2025
Actor
Turkey! Time to Strike
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6.3

Turkey! Time to Strike

Jul 9, 2025
Actor