
Koutarou Nishiyama
西山宏太朗
Birth: October 11, 1991
Age: 34
Gender: Male
Hometown: Kanagawa Prefecture, Japan
Years Active: 2011 ~ Present
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Koutaro Nishiyama is a Japanese voice actor and singer. He is currently affiliated with 81 Produce. In 2018, he won the Best New Actor Award at the 12th Seiyu Awards.
Characters
1 / 92
2025

Narrator
( BACKGROUND )
Yousei-san
( SUPPORTING )
Yukihiro Aida
( SUPPORTING )
Taffee
( SUPPORTING )
Shin
( MAIN )
Jin Kougasaki
( MAIN )
Jin Kougasaki
( MAIN )
Shin
( SUPPORTING )
Taffee
( SUPPORTING )
Atsushi Kinugawa
( MAIN )
2024

Tani
( SUPPORTING )
Kiritaka Muse
( SUPPORTING )
Manekarezarukyaku
( SUPPORTING )
Kazuhito Narita
( SUPPORTING )
Soshikiin A
( BACKGROUND )
2023

Kentarou Momose
( MAIN )
Isaac Farrar
( SUPPORTING )
Yuzuki Teramitsu
( MAIN )
Kouji Tatsuishi
( SUPPORTING )
Minami Natsume
( MAIN )
Minami Natsume
( MAIN )
Kanata Shinkai
( MAIN )
Isaac Farrar
( SUPPORTING )
Ryou Akai
( SUPPORTING )
Sagyou
( SUPPORTING )
Anime Staff Roles
1 / 1
2025

Everyday Host
Theme Song Performance (ED7)
2018

Gakuen Babysitters
Theme Song Performance (ED)
2017

Binan Koukou Chikyuu Bouei-bu LOVE! LOVE! LOVE!
Theme Song Performance
2015

Binan Koukou Chikyuu Bouei-bu LOVE!
Theme Song Performance (OP, ED)