Koutarou Nishiyama

西山宏太朗

Koutarou Nishiyama is a Japanese voice actor with 17 roles recorded here across 17 series in the catalogue.

Roles & characters

Junnosuke Nakano

中野淳之介

Aoashi

Kouji Tatsuishi

辰石幸次

My Happy Marriage

Watashi no Shiawase na Kekkon

Ryuuichi Kashima

鹿島竜一

Gakuen Babysitters

Kouji Tatsuishi

辰石幸次

My Happy Marriage

Watashi no Shiawase na Kekkon

Shouta Uranishi

浦西翔太

Re/Member

Karada Sagashi

Tamamori

玉森

Kotarou wa Hitorigurashi

Yoshiharu Hisomu

日染芳春

KIZNAIVER

Kiznaiver

Kentarou Momose

桃瀬健太郎

My New Boss is Goofy

Atarashii Joushi wa Dotennen

Yukihiro Aida

相田雪紘

With You, Our Love Will Make It Through

Kimi to Koete Koi ni Naru

Hikaru Satou

佐藤光

Major 2nd

Yoshiharu Hisomu

日染芳春

Shousetsu Kiznaiver: Ano Hi no Kizu, Kore kara no Kizuna

Kiznaiver

Tsuzuru Minagi

皆木綴

A3! SPRING

A3! SEASON SPRING ＆ SUMMER

Atsushi Kinugawa

鬼怒川熱史

Binan Koukou Chikyuu Seifukubu LOVE!

Binan Koukou Chikyuu Bouei-bu LOVE!

Atsushi Kinugawa

鬼怒川熱史

Binan Koukou Chikyuu Boueibu LOVE! NOVEL!

Binan Koukou Chikyuu Bouei-bu LOVE!

Garlic

ガーリック

Zoids Wild

Tsuzuru Minagi

皆木綴

Sakutto Wakaru♪ MANKAI☆Manga Sengen

A3! SEASON SPRING ＆ SUMMER

Kyousuke Tsuzuki

都築京介

Stand My Heroes Comic Anthology

Stand My Heroes: PIECE OF TRUTH

Cast credits via AniList.