Acting · born 1982 · 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.
Haikyu!!
Kai Akakura (voice) · 2014
The Quintessential Quintuplets
Homeroom Teacher (voice) · 2019
I Got a Cheat Skill in Another World and Became Unrivaled in the Real World, Too
(voice) · 2023
HAIKYU!! The Dumpster Battle
Patient (voice) · 2024
Sword Art Online the Movie – Progressive – Scherzo of Deep Night
Naijan (voice) · 2022
Yashahime: Princess Half-Demon
Villager (voice) · 2020
You and I Are Polar Opposites
Convenience Store Manager (voice) · 2026
Let This Grieving Soul Retire
Greg Zangief (voice) · 2024
Super Cub
Clerk (voice) · 2021
Star Wars: Visions Presents - The Ninth Jedi
Satellite Digger (voice) · 2026
Umamusume: Pretty Derby - Beginning of a New Era
(voice) · 2024
Tearmoon Empire
Priest (voice) · 2023
DAN DA DAN: First Encounter
TV Station Producer (voice) · 2024
Summer Pockets
(voice) · 2025
Puniru Is a Kawaii Slime
Academic Researchers (voice) · 2024
