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Koki Koyasu
Koki Koyasu

Koki Koyasu

Acting•Born January 9, 1994 (age 32)•Tokyo, Japan

Biography

Koki Koyasu is a Japanese voice actor. He is the son of popular voice actor Takehito Koyasu and a member of his agency T's Factory.

Known For

Re:ZERO -Starting Life in Another World-
8.1

Re:ZERO -Starting Life in Another World-

TV Series2016
Dan Da Dan
8.5

Dan Da Dan

TV Series2024
Call of the Night
7.7

Call of the Night

TV Series2022
Toilet-Bound Hanako-kun
8.6

Toilet-Bound Hanako-kun

TV Series2020
Demon Slayer: Kimetsu no Yaiba
8.6

Demon Slayer: Kimetsu no Yaiba

TV Series2019
I'm Standing on a Million Lives
6.5

I'm Standing on a Million Lives

TV Series2020
I'm Standing on a Million Lives
6.5

I'm Standing on a Million Lives

TV Series2020
Hortensia SAGA
5.4

Hortensia SAGA

TV Series2021

Filmography

2026
Reiwa ni Kannou Shousetsu Tsukuttemasu

as Oizumi Aoi

TV
2024
Dan Da Dan

as Male Student A (voice)

TV
2022
Call of the Night

as Kai (voice)

TV
2021
Hortensia SAGA

as Camellia Soldier (voice)

TV
2021
Hortensia SAGA

as Soldier (voice)

TV
2021
Hortensia SAGA

as Church Knight (voice)

TV
2020
I'm Standing on a Million Lives

as Nomura (voice)

TV
2020
I'm Standing on a Million Lives

as Maccahee (voice)

TV
2020
Toilet-Bound Hanako-kun

as Male Classmate A (voice)

TV
2019
Demon Slayer: Kimetsu no Yaiba

as (voice)

TV
2016
Re:ZERO -Starting Life in Another World-

as Roswaal B. Mathers (voice)

TV

Personal Info

DepartmentActing
BirthdayJanuary 9, 1994
Place of BirthTokyo, Japan
Popularity1.2